2013
Record 1 of 103 |
Title: Spectroscopic properties and Judd-Ofelt analysis of Dy<SUP>3+</SUP>-doped and Dy<SUP>3+</SUP>, Tm<SUP>3+</SUP>-codped Ge-In-S chalcogenide glasses |
Author(s): Guo, HT (Guo, Haitao); Xu, YT (Xu, Yantao); Chen, HY (Chen, Hongyan); Cui, XX (Cui, Xiaoxia); Qiao, ZB (Qiao, Zebang); Gu, SX (Gu, Shaoxuan); Hou, CQ (Hou, Chaoqi); Meng, W (Meng, Wei); Lu, CF (Lu, Chunfeng); Peng, B (Peng, Bo) |
Source: JOURNAL OF NON-CRYSTALLINE SOLIDS Volume: 377 Special Issue: SI Pages: 95-99 DOI: 10.1016/j.jnoncrysol.2013.01.013 Published: OCT 1 2013 |
Abstract: 0.2 wt.% Dy3+-doped and 0.2 wt.% Dy3+, 0.5 wt.% Tm3+-codoped (100-x)GeS2 center dot xIn(2)S(3) (x = 5,10,15,20,25) chalcogenide glasses were prepared. Their spectroscopic properties were analyzed based on absorption (ranges from 500 to 3000 nm) and emission (ranges from 1000 to 4700 nm) measurements. The Judd-Ofelt strength parameters Omega(t) (t = 2, 4, 6) and the spectroscopy parameters A(rad), beta and T-rad were calculated, and the sigma(emi) of the 1330, 2930 and 4320 nm fluorescences were estimated. These Dy3+-doped and Dy3+, Tm3+-codoped Ge-In-S chalcogenide glasses are valuable materials for using in 1.3 mu m fiber-amplifiers and 2-5 mu m mid-infrared laser devices. (C) 2013 Elsevier B.V. All rights reserved. |
Accession Number: WOS:000325304800022 |
Conference Title: 18th International Symposium on Non-Oxide and New Optical Glasses |
Conference Date: JUL 01-05, 2012 |
Conference Location: Saint Malo, FRANCE |
Conference Sponsors: Inst Chem Sci Rennes, Univ Rennes 1, Conseil Gen Ille & Vilaine, CNRS GDR Verres, AdValue Photon, Bretagne Photon, Mettler Toledo, PerkinElmer Inc, Off Naval Res |
ISSN: 0022-3093 |
eISSN: 1873-4812 |
Record 2 of 103 |
Title: The Application of Auto-gated Power Supply in ICCD Camera |
Author(s): Bai, Z (Bai Zhe); Zhang, J (Zhang Jian); Fan, XW (Fan Xue-wu); Xiang, SM (Xiang Shi-ming) |
Edited by: Chang B; Guo H |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LOW-LIGHT-LEVEL TECHNOLOGY AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8912 Article Number: 89121H DOI: 10.1117/12.2034761 Published: 2013 |
Abstract: Intensified CCD (ICCD) imagers have been widely used in low light level imaging system. While the ICCD has smaller dynamic range in ubiquity, and its output image is prone to saturation in high light level. In this paper, the auto-gated power supply method is put forward to implementing automatic brightness control (ABC). Consequently, the ICCD camera imaging dynamic range is improved. Firstly, the principle of the auto-gated power supply is described briefly, and the design scheme is carried out in detail. The pulse power control mode is adopted to the photocathode instead of the traditional high voltage DC power supply, and the analog adjustment mode is adopted to the micro channel plate (MCP). Secondly, an imaging experiment for ICCD camera was made to validate the auto-gated power supply design, and the experiment results are presented. The results indicated that the design is valid, and the auto-gated power supply method helps to improve the image quality of the ICCD camera. Finally, the key problems in the design are analyzed and summarized in detail. |
Accession Number: WOS:000325349800051 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Low-Light-Level Technology and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9781-9 |
Record 3 of 103 |
Title: A Study on the Application of ICCD in Low Light Level Remote Sensing |
Author(s): Bai, Z (Bai Zhe); Zhang, J (Zhang Jian); Fan, XW (Fan Xue-wu); Yang, WG (Yang Wen-gang) |
Edited by: Chang B; Guo H |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LOW-LIGHT-LEVEL TECHNOLOGY AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8912 Article Number: 89121G DOI: 10.1117/12.2034745 Published: 2013 |
Abstract: Image intensifiers are always used to amplify low light level (LLL) images in a wide wavelength range to observable levels. As a leader in image intensifiers for industrial and scientific applications, intensified CCD (ICCD) is an innovative product which is a hybrid of image intensifier and CCD. Over the past few decades ICCDs have been increasingly developed and widely used in a variety of fields such as LLL television system and medical diagnostics. In this paper, we present the application of ICCD in the field of LLL remote sensing. General LLL imaging devices are introduced briefly, and their advantages and disadvantages are compared. ICCD technology which includes fundamental, configuration and development, is expatiated on. The major parameters which incarnate the performance of the LLL remote sensing ICCD camera are analyzed in detail, such as signal noise ratio (SNR), dynamic range, spatial resolution, etc. An ICCD camera is designed, and an imaging experiment is made to validate the imaging ability of it in LLL condition. The experiment results are discussed and summarized. At last, the most important issues to the application of ICCD in LLL remote sensing are generalized in detail. |
Accession Number: WOS:000325349800050 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Low-Light-Level Technology and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9781-9 |
Record 4 of 103 |
Title: Three-dimensional Structure Trajectory Guiding Scan and Points Cloud Registration |
Author(s): Cai, Y (Cai, Yong) |
Edited by: Wang CK; Guo J |
Source: MECHATRONICS AND APPLIED MECHANICS II, PTS 1 AND 2 Book Series: Applied Mechanics and Materials Volume: 300-301 Pages: 423-426 DOI: 10.4028/www.scientific.net/AMM.300-301.423 Published: 2013 |
Abstract: Three-dimensional visual scanning is an advanced non-contact measurement approach that can obtain a complete surface model of object. But, in the method, the local raster point cloud sets calculated must be registered to a whole. To reduce fluctuating errors and increase efficiency, we propose a new method that scanner can be moved around object guided by pre-planning trajectory of the robot. First, considering the structural parameters of the robot, the Inverse Kinematics Problem of each joint rotating function is derived, and the moving trajectory is simulated. Then, the relationship between the distances of controlled motion and data gotten by scanner is analyzed, a transform matrix which registered the local point cloud sets is deduced, the raster data can be normalized to the world coordinate by it. The experimental results show that error of registration is less than 0.09mm. The method is suited to measuring different targets in robot workspace. It can improve the efficiency and flexibility of visual measurement system. |
Accession Number: WOS:000320567900081 |
Conference Title: 2nd International Conference on Mechatronics and Applied Mechanics (ICMAM2012) |
Conference Title: 2nd International Conference on Mechatronics and Applied Mechanics (ICMAM2012) |
Conference Date: DEC 06-07, 2012 |
Conference Date: DEC 08-09, 2012 |
Conference Location: Hong Kong, PEOPLES R CHINA |
Conference Location: Taipei, PEOPLES R CHINA |
ISSN: 1660-9336 |
ISBN: 978-3-03785-651-2 |
Record 5 of 103 |
Title: Experimental Study of the Damage of Silicon Photoelectric Detector Materials Induced by Repetitively-pulsed Femtosecond Laser |
Author(s): Cai, Y (Cai, Yue); Ma, ZL (Ma, Zhi-liang); Zhang, Z (Zhang, Zhen); Cheng, GH (Cheng, Guang-hua); Ye, XS (Ye, Xi-sheng); Cheng, DY (Cheng, De-yan) |
Edited by: Kaierle S; Liu J; Cao J |
Source: 2ND INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER (LIMIS 2012) Book Series: Proceedings of SPIE Volume: 8796 Article Number: 87960I DOI: 10.1117/12.2011136 Published: 2013 |
Abstract: The experimental setup was established for studying damage effects on silicon photoelectric detector materials induced by 800nm and 150fs repetitively-pulsed laser. The detector is irradiated by single shot and multiple shots respectively. The laser damage thresholds of silicon photoelectric detector material were measured. The surface morphologies of the material damaged by laser were analyzed. The surfaces damaged by laser with different energy were compared. The thresholds vary with the number of laser shots. According to the accumulation theory, the damage threshold is the power function of the shot number. Experimental results show that threshold of single shot that damages the silicon photoelectric detector is 0.156J/cm(2). The laser damage threshold decreases with the increasing number of laser pulses, but the minimum value exists. The damage is mainly caused by the mechanical effect rather than thermal effect. In fact, the thermal effect during the interaction is so small that it can't even be observed. Resistivity of the silicon photoelectric detector irradiated by femtosecond laser decreases and finally tends to a constant value. |
Accession Number: WOS:000323339600018 |
Conference Title: 2nd International Symposium on Laser Interaction with Matter (LIMIS) |
Conference Date: SEP 09-12, 2012 |
Conference Location: Xian, PEOPLES R CHINA |
Conference Sponsors: State Key Lab Laser Interact Matter, CIOMP, Publicat Dept, NW Inst Nucl Technol, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Chinese Opt Soc, European Laser Inst, Opt Soc, Shaanxi Opt Soc, Japan Soc Promot Sci |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9639-3 |
Record 6 of 103 | ||||||
Title: Optimized H.264 Motion Estimation Algorithm Based on UMHexagonS | ||||||
Author(s): Chen, L (Chen, Liu); Cao, JZ (Cao, Jian-zhong); Tang, LN (Tang, Li-nao); Huang, JJ (Huang, Ji-jiang); Guo, HN (Guo, Hui-nan); Dong, XK (Dong, Xiao-kun) | ||||||
Book Group Author(s): IEEE | ||||||
Source: PROCEEDINGS OF THE 2013 FOURTH INTERNATIONAL CONFERENCE ON INTELLIGENT CONTROL AND INFORMATION PROCESSING (ICICIP) Pages: 177-181 Published: 2013 | ||||||
Abstract: H.264 has adoptedUMHexagonS algorithm as fast motion estimation algorithm for integer pixel formally, but this algorithm has some shortages such as searchpointsare lots, quantity of operation is kind of big, costs much time, and so on. These need to be solved as soon as possible. This paper introduces and analyses UMHexagonS algorithm. In order to solve these problems, this paper brings forwardclassification strategy for search algorithm according to statistical properties of the motion vector prediction value, and improvesthe template basedon original algorithm according to the characteristic of center bias of motion vector. The results of experimentsshow that the improved algorithm in this paper reduces the time of motion estimation by 15%similar to 27%. At the meantime, it can ensure PSNR and rate basically unchanged. | ||||||
Accession Number: WOS:000326374300036 | ||||||
Conference Title: 4th International Conference on Intelligent Control and Information Processing (ICICIP) | ||||||
Conference Date: JUN 09-11, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: IEEE, Inst Automat, Chinese Acad Sci, Univ Illinois Chicago, Natl Nat Sci Fdn China | ||||||
Author Identifiers: | ||||||
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ISBN: 978-1-4673-6249-8; 978-1-4673-6248-1 |
Record 7 of 103 |
Title: Design and Fabrication of Cyclic-olefin Copolymer Based Terahertz Hollow-core Photonic Crystal Fiber |
Author(s): Chen, Q (Chen, Qi); Zhang, YX (Zhang, Yi-xia); He, XY (He, Xiao-yang); Kong, DP (Kong, De-peng); Zhang, J (Zhang, Jian) |
Book Group Author(s): IEEE |
Source: 2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) Book Series: International Conference on Infrared Millimeter and Terahertz Waves Published: 2013 |
Abstract: In this paper a kind of hollow-core terahertz photonic crystal fiber made of Cyclic-olefin Copolymer with low absorption loss is designed. Results show these fibers are much better than metallic waveguides for their fine transmission properties in terahertz band. Along with the fine flexibility to bend, they are of great importance in application. |
Accession Number: WOS:000345855300264 |
Conference Title: 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) |
Conference Date: SEP 01-06, 2013 |
Conference Location: Mainz, GERMANY |
Conference Sponsors: Fraunhofer Inst Phys Measurement Tech IPM, Univ Kaiserslautern, IEEE Microwave Theory & Tech Soc, State Rhineland Palatinate, Minist Sci & Educ, OPTIMAS, Xiton Photon GmbH, Univ Kaiserslautern, Fac Phys, HUBNER, Edinburgh Instruments, Lake Shore, Anritsu Corp, Innovat Ctr Appl Syst Modeling, Optence, TRAS Inc, Advantest, Edmund Opt |
ISSN: 2162-2027 |
ISBN: 978-1-4673-4717-4 |
Record 8 of 103 | ||||||
Title: Implementation and Performance of Image Filtering on GPU | ||||||
Author(s): Chen, X (Chen, Xi); Qiu, YH (Qiu, Yuehong); Yi, HW (Yi, Hongwei) | ||||||
Book Group Author(s): IEEE | ||||||
Source: PROCEEDINGS OF THE 2013 FOURTH INTERNATIONAL CONFERENCE ON INTELLIGENT CONTROL AND INFORMATION PROCESSING (ICICIP) Pages: 514-517 Published: 2013 | ||||||
Abstract: Image filtering is one of the most important parts in the image-processing. It takes much more time to performance the convolution in image filtering on CPU since the computation demanding of image filtering is massive. Contrast to CPU, GPU may be a good way to accelerate the image filtering. CUDA(Compute Unified Device Architecture) is a parallel computing architecture developed by NVIDIA. CUDA is highly suited for general purpose programming on GPU which is a programming interface to use the parallel architecture for general purpose computing. This interface is a set of library functions which can be coded as an extension of C language. In this paper, the filtering was implemented in the frequency domain instead of the spatial domain since the filtering in the frequency domain is faster than convolution in the spatial domain if we have filters with many coefficients and filtering in 2D. Compared with the traditional method of image filtering which was performed on CPU, the implementation of image filtering on GPU has a speedup of approximately 10 times. GPU has great potential as high-performance co-processor. | ||||||
Accession Number: WOS:000326374300102 | ||||||
Conference Title: 4th International Conference on Intelligent Control and Information Processing (ICICIP) | ||||||
Conference Date: JUN 09-11, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: IEEE, Inst Automat, Chinese Acad Sci, Univ Illinois Chicago, Natl Nat Sci Fdn China | ||||||
Author Identifiers: | ||||||
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ISBN: 978-1-4673-6249-8; 978-1-4673-6248-1 |
Record 9 of 103 |
Title: Singl-step fabrication of stressed waveguides with tubular depressed-cladding in phosphate glasses using ultrafast vortex laser beams |
Author(s): Cheng, GH (Cheng, Guanghua); Long, XW (Long, Xuewen) |
Edited by: Bellouard Y; Canioni L |
Source: PROGRESS IN ULTRAFAST LASER MODIFICATIONS OF MATERIALS Book Series: MATEC Web of Conferences Volume: 8 Article Number: 06008 DOI: 10.1051/matecconf/20130806008 Published: 2013 |
Abstract: We report on the fabrication of the stressed optical waveguide with tubular depressed-refractive- index cladding in phosphate glasses by use of femtosecond vortex beam. Strained regions were emerged in domains surrounding the tubular track. Waveguiding occurs mainly within the tube induced by femtosecond laser. |
Accession Number: WOS:000395827500057 |
Conference Title: Conference on Progress in Ultrafast Laser Modifications of Materials |
Conference Date: APR 14-19, 2013 |
Conference Location: Inst Etude Sci Cargese, Cargese, FRANCE |
Conference Host: Inst Etude Sci Cargese |
ISSN: 2261-236X |
Record 10 of 103 |
Title: Object Tracking Based on Integrating the Genetic Algorithm with Complex Method |
Author(s): Dong, XK (Dong, Xiaokun); Cao, JZ (Cao, Jianzhong); Yang, HT (Yang, Hongtao); Yu, Z (Yu, Zhi); Guo, HN (Guo, Huinan); Liu, C (Liu, Chen) |
Book Group Author(s): IEEE |
Source: PROCEEDINGS OF THE 2013 FOURTH INTERNATIONAL CONFERENCE ON INTELLIGENT CONTROL AND INFORMATION PROCESSING (ICICIP) Pages: 205-209 Published: 2013 |
Abstract: Traditional Genetic algorithm in target tracking process, is quite effective in the global scope to search target position. However, once the background color and light intensity change. To monitor the state of the target depth movement is often difficult to locate the target accurately. However, complex method can make up for the lack of Genetic algorithms. In view of those, this paper integrates Complex method with traditional Genetic algorithms, uses the center coordinates of the candidate target and scaling coefficient to adjust the focus size as a parameter encoding, and takes the similarity between the target area and the target template as a fitness function, then searches the object in the overall and local scope in turn. The experiments show that the fusion algorithm can achieve accurate tracking of the position and the size of the target. |
Accession Number: WOS:000326374300041 |
Conference Title: 4th International Conference on Intelligent Control and Information Processing (ICICIP) |
Conference Date: JUN 09-11, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: IEEE, Inst Automat, Chinese Acad Sci, Univ Illinois Chicago, Natl Nat Sci Fdn China |
ISBN: 978-1-4673-6249-8; 978-1-4673-6248-1 |
Record 11 of 103 |
Title: Space High Precision Multi-thermoelectric coolers Controller Design |
Author(s): Du, YF (Du Yunfei); Gao, W (Gao Wei); Luo, MW (Luo Mingwei); Fan, XW (Fan Xuewu) |
Book Group Author(s): IEEE |
Source: 2013 THIRD INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEM DESIGN AND ENGINEERING APPLICATIONS (ISDEA) Pages: 1276-1278 DOI: 10.1109/ISDEA.2012.300 Published: 2013 |
Abstract: With the advancement of high performance charge coupled device (CCD) in aerospace imaging detection, image quality is placed a high value. The importance of an ideal CCD working ambient temperature is realized with the deeply researching of the characters of CCD. A temperature controlling system based on multi- TECs is introduced deriving from the need to prevent thermally induced dark currents from becoming the dominate noise source. -65 degrees C +/- 2 degrees C is the designed value for best function of the CCD used in our project. The principle and work mode of TEC are analyzed. An originally multi-TECs controller design is given for meeting this requirement as well as power and cubage. PWM control and linear control are actualized on two types of TECs according to different application mode. Below 10% current ripple is acquired and the temperature stabilization is below +/- 0.6 degrees C. The ambient temperature is achieved nicely in simulating CCD working cabin experiment stably and efficiently. |
Accession Number: WOS:000319283600296 |
Conference Title: 3rd International Conference on Intelligent System Design and Engineering Applications (ISDEA) |
Conference Date: JAN 16-18, 2013 |
Conference Location: Hong Kong, PEOPLES R CHINA |
Conference Sponsors: Hunan Univ Technol, St Johns Univ, Hunan Inst Humanities Sci & Technol, Dept Elect Sci & Technol, Natl Univ Defense Technol |
ISBN: 978-0-7695-4923-1 |
Record 12 of 103 | ||||||
Title: An all-optical encryption system for multi-wave signals | ||||||
Author(s): Duan, J (Duan Jie); Wen, Y (Wen Yu); Duan, T (Duan Tao); Xie, XP (Xie Xiaoping) | ||||||
Edited by: Wilson KE; Ma J; Liu L; Jiang H; Ke X | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER COMMUNICATION TECHNOLOGIES AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8906 Article Number: 89060E DOI: 10.1117/12.2032218 Published: 2013 | ||||||
Abstract: An all-optical encryption system which can be used in fiber WDM system and directly encrypt multi-wave optical signals is proposed. This scheme achieves multi-wave signals encrypting by the technology of generating coherently multi-wave optical plain text, Key text and the technology of phase shift interference. The feasibility and validity of this encrypting scheme are verified by simulative experiment for multi-wave signals at 8 x 10Gbps with wavelength interval of 0.8nm, the simulative result shows that when the input Pi and Ki is Gauss pulse with duty cycle of 0.3, the bit error rate and Q factor of encryption output are 0 and 164 respectively. Theory analysis and simulative experiment shows the scheme is feasible and efficient. | ||||||
Accession Number: WOS:000325462400013 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Laser Communication Technologies and Systems | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9775-8 |
Record 13 of 103 | ||||||
Title: An integrated all-optical encryption scheme for multi-wave 8x80Gbps signal based on LibNO3 waveguide | ||||||
Author(s): Duan, J (Duan Jie); Wen, Y (Wen Yu); Duan, T (Duan Tao); Xie, XP (Xie Xiaoping) | ||||||
Edited by: Wilson KE; Ma J; Liu L; Jiang H; Ke X | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER COMMUNICATION TECHNOLOGIES AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8906 Article Number: 89060F DOI: 10.1117/12.2032225 Published: 2013 | ||||||
Abstract: In order to realize the all-optical encryption for multi-wave and ultra-high speed, an all-optical encryption scheme is proposed, which is based on pockels effect of LiNbO3 waveguide and optical-time-division-multiplexing (OTDM) in LibNO3 waveguide. The coherently ultra-high speed plaintext and key are generated by OTDM in LibNO3 waveguide and the XOR operation of optical plaintext and key are achieved by direct light interference. The feasibility and validity of this scheme is verified by simulative experiment at 8 x 80Gbps with wavelength interval of 2nm. | ||||||
Accession Number: WOS:000325462400014 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Laser Communication Technologies and Systems | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9775-8 |
Record 14 of 103 |
Title: Development of the control circuits for the TID-CCD Stereo Camera of the Chang'E-2 satellite based on FPGAs |
Author(s): Duan, YQ (Duan Yong-Qiang); Gao, W (Gao Wei); Qiao, WD (Qiao Wei-Dong); Wen, DS (Wen De-Sheng); Zhao, BC (Zhao Bao-Chang) |
Edited by: Gong H; Shi Z; Chen Q; Lu J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89074U DOI: 10.1117/12.2034877 Published: 2013 |
Abstract: The TDI-CCD Stereo Camera is the optical sensor on the Chang'E-2 (CE-2) satellite created for the Chinese Lunar Exploration Program. The camera was designed to acquire three-dimensional stereoscopic images of the lunar surface based upon three-line array photogrammetric theory. The primary objective of the camera is, (1) to obtain about 1-m pixel spatial resolution images of the preparative landing location from an ellipse orbit at an altitude of similar to 15km, and (2) to obtain about 7-m pixel spatial resolution global images of the Moon from a circular orbit at an altitude of similar to 100km. The focal plane of the camera is comprised of two TDI-CCDs. The control circuits of the camera are designed based on two SRAM-type FPGAs, XQR2V3000-4CG717. In this paper, a variable frequency control and multi-tap data readout technology for the TDI-CCD is presented, which is able to change the data processing capabilities according to the different orbit mode for the TDI-CCD stereo camera. By this way, the data rate of the camera is extremely reduced from 100Mbps to 25Mbps at high orbit mode, which is benefit to raise the reliability of the image transfer. The results of on-board flight validate that the proposed methodology is reasonable and reliable. |
Accession Number: WOS:000325423700157 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9776-5 |
Record 15 of 103 | ||||||
Title: Development of the electronics system prototype of the panoramic camera for space applications | ||||||
Author(s): Duan, YQ (Duan Yong-Qiang); Gao, W (Gao Wei); Qiao, WD (Qiao Wei-Dong); Yang, JF (Yang Jian-Feng); Wen, DS (Wen De-Sheng) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89074S DOI: 10.1117/12.2034858 Published: 2013 | ||||||
Abstract: The stereoscopic panoramic camera is a kind of important optical payload for space applications. It can image the full 360 in azimuth to the goal scene and obtain high resolution three-dimensional images. Many science investigations can be conducted by scientists with these images, such as the analysis for the planet terrain and the geology. This kind of payload has common features such as light-weight, miniaturization, and lower power consumption. This paper presents the development of a stereoscopic, panoramic imaging system for space applications, which is a typical staring binocular stereo imaging system and consists of two identical digital cameras. Each camera was build based upon a CMOS APS (Complementary Metal Oxide Semiconductor Active Pixel Sensors) and a high density FPGA (Field Programmable Gate Array). The camera has the features with the weight of about 210g and the power consumption of about 660mW. In this paper, the design details of the electronics for the specifications above are emphasized, and the designs and implements of the FPGA are particularly discussed. Finally, the verification and experiment results for the stereoscopic panoramic camera show that the design methodology is feasible. | ||||||
Accession Number: WOS:000325423700155 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 16 of 103 |
Title: An Improved Image Fusion Algorithm Based on Wavelet Transform |
Author(s): Duan, ZW (Duan, Zewei); Wen, DS (Wen, Desheng); Song, ZX (Song, Zongxi) |
Edited by: Gong H; Shi Z; Chen Q; Lu J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89070Y DOI: 10.1117/12.2031878 Published: 2013 |
Abstract: Image fusion takes a significant part in the technology of information enhancement. By analyzing the advantages and disadvantages of previous methods, this paper proposes an improved wavelet-transform-algorithm, which both considers the fusion methods of low-frequency and high-frequency components: On the low-frequency sub-band aspect, introducing a border detector operator in order to collect the border information of images that can be the basis of selective fusion method; On the high-frequency sub-band aspect, applying the local-standard-deviation to being the basis of selective and weighted-averaging fusion method. The experiments reveal that the proposed algorithm contributes to enhancing the definition and contract ratio of the fused images, thereby it's a valid method. |
Accession Number: WOS:000325423700031 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9776-5 |
Record 17 of 103 |
Title: Design of Long-wave Infrared Scan System with Rotating Dual-wedge prism |
Author(s): Fan, ZY (Fan, Zheyuan); Gao, LM (Gao, Limin); Yang, HT (Yang, Hongtao); Chen, WN (Chen, Weining); Cao, JZ (Cao, Jianzhong); Zhang, J (Zhang, Jian); Zhang, Z (Zhang, Zhi) |
Edited by: Fu Y |
Source: ADVANCES IN OPTICS MANUFACTURE Book Series: Key Engineering Materials Volume: 552 Pages: 27-32 DOI: 10.4028/www.scientific.net/KEM.552.27 Published: 2013 |
Abstract: Due to the possession of advantages of passivity working mode, good disguise, and easy observation, infrared systems are used in a wide variety of applications. This paper using 640x480 uncooled detector designed a long-wave scan optical system with large field and large aperture working at 8.0 mu m similar to 12 mu m, the Pixel Dimensions of the detector is 30 mu m. The F number of this system is 1.4 and focal length is 17mm, FOV is 63.6 degrees, which extended to 143 degrees by adopting dual-wedge prism rotating, the paper also given the extended field theory by the dual-wedge prism. Because there are a limited number of lens materials used in LWER. spectral bands, Germanium material and three aspheric surfaces were adopted to balance sphere aberrations and chromatic aberration. All above mentioned are intending to ensure the system has good imaging quality. The results show that the optical performance approximates to the diffraction limit and the design has better achromatic performance. The modulation transfer function (MTF) is above 0.5 at spatial frequency of 20lp/mm, energy concentration ratio is greater than 70% within the sensing element of the detector and Root Mean Square (RMS) value of spot diameter is smaller than the Pixel Dimensions. The system has advantages of simple structure, large aperture, high image quality etc. |
Accession Number: WOS:000322090100005 |
Conference Title: 3rd Asia Pacific Conference on Optics Manufacture (APCOM 2012) |
Conference Date: AUG 26-28, 2012 |
Conference Location: Changchun, PEOPLES R CHINA |
Conference Sponsors: Changchun Univ Sci & Technol, Hong Kong Polytechn Univ, Adv Opt Mfg Ctr, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Jilin Univ, Natl Univ Defense Technol, Sci & Technol Low Light Level Night Vision Lab, Natl Key Lab High Power Semicond Laser, Info Tek Informat Sci & Technol Co Inc, Chinese Opt Soc, Opt Soc Amer, Chinese Soc Astronaut, Profess Assoc Photoelectron Technol |
ISSN: 1013-9826 |
Record 18 of 103 | ||||||
Title: Theoretical and experimental study on methods for increasing squeezed level in the generation of squeezed light | ||||||
Author(s): Feng, F (Feng Fei); Qu, WY (Qu Wen-yan); Song, JZ (Song Jia-zheng); Zhang, TY (Zhang Tong-yi) | ||||||
Edited by: Wilson KE; Ma J; Liu L; Jiang H; Ke X | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER COMMUNICATION TECHNOLOGIES AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8906 Article Number: 89061W DOI: 10.1117/12.2034574 Published: 2013 | ||||||
Abstract: We demonstrate the methods for increasing the observed squeezing level in the generation of squeezed states of light at 1064 nm with periodically poled KTiOPO4 (PPKTP) crystal. We analyze the technical limits to the reduction of noise in the squeezed quadrature theoretically, including the intra-cavity loss of the optical parametric amplifier (OPA) cavity, the normalized amplitude, the detection frequency, and the mode matching on the balanced homodyning stage. To observe a high degree of squeezing, we improve the quality of mode matching into the OPA cavity and the mode cleaning (MC) cavity experimentally. By optimizing mode matching of the light into cavities, the finesse of the cavities would be higher in practice and the desirable spatial mode can be realized. As the intensity noise of the laser light reach the shot noise limit above the frequency of 1 MHz, which is sufficient for our experiment, so the MC cavity is incorporated to filter higher-order transverse modes of the local oscillator (LO) beam for the balanced homodyne detection. The experimental and theoretical results show that it is essential to optimize the mode matching efficiency to generate and detect high degree of squeezing otherwise an inefficiency mode matching will throw away the squeezing and transform the squeezed field into a vacuum field. | ||||||
Accession Number: WOS:000325462400067 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Laser Communication Technologies and Systems | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9775-8 |
Record 19 of 103 |
Title: Resolution performance of the extra ultraviolet telescopes |
Author(s): Fu, HY (Fu Huai-yang); Zhou, SZ (Zhou Si-zhong); Jiang, K (Jiang Kai); Mei, C (Mei Chao) |
Edited by: Ohta J; Wu N; Li B |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 DOI: 10.1117/12.2032376 Published: 2013 |
Abstract: The Extreme Ultraviolet Telescopes (EUT) Operates at wavelengths between 100-1000 angstrom. As an important parameter of the telescope system, before the launch, angular resolution is necessary to be calibrated for testing the imaging performance of EUT. However, the difficulty and expense of fabricating optical testing systems capable of imaging the characteristic EUV wavelengths, has precluded in working wavelength resolution testing. This article taken a Ritchey-Chretien normal incidence optical system as sample and resolution tests were carried out at visible wavelength. Based on this measurement, the angular resolution error budget at visible wavelength was calculated. At working wavelength, we added the squares of the pointing jitter error, the resolution focusing error and the scattering error, to the theoretical Rayleigh diffraction limit at the wavelength of operation, and then take the square root of this sum, an upper limit estimate of telescope's resolution was obtained about 0.4705 arcsec. This result proved that the EUT worked at diffraction-limited level and the resolution performance has met the demand of design. |
Accession Number: WOS:000325484000016 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9777-2 |
Record 20 of 103 |
Title: The Generating Mechanism of strips and Destriping Algorithm of HJ-1A Hyperspectral Image |
Author(s): Gao, XH (Gao Xiao-hui); Xu, GH (Xu Guang-hui); Yu, T (Yu Tao); Wei, RY (Wei Ru-yi) |
Edited by: Zhang L; Yang J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SPECTROMETER TECHNOLOGIES AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8910 Article Number: 89101U DOI: 10.1117/12.2034763 Published: 2013 |
Abstract: Hyperspectral remote sensing images are affected by different types of noise. In addition to typical random noise, nonperiodic partially deterministic disturbance patterns appear in the data. The strips usually found in images acquired by push-broom sensors, which are characterized by a high degree of spatial and spectral coherence. Many strips-reduction approaches such as histogram matching and moment matching have been developed. These methods assume that all sensor elements observe similar subscenes in a given image and adjust the distributions of values acquired by each sensor to some reference distribution by means of a histogram or moment matching, but this assumption usually is failure in many scenes which contain diverse materials. The formation of strips has close connection with the image formation process of push-broom imaging spectrometers. Many causes such as the uniformity of the pixels, the push-broom mode and the asymmetric width of thin slit at the entrance of imaging spectrometers can induce the strips in the images. Comparing with the dispersive spectrometers, interferometer spectrometers acquire the interference data, obtaining the spectrum by using the Fast Fourier Transformation (FFT). By analyzing the generating mechanism of strips in push-broom interferometer imaging spectrometers, we proposed an approach that corrects the strips using relative calibration factor directly computed from the acquired image. Once the relative calibration factor is determined, all the images acquired by the same imaging spectrometers can be corrected. So the methodology is an efficient one to reduce the strips. A formula is set up to describe the connection between gray values of pixels in images and relative calibration factor. The developed methodology is tested on data acquired by HJ-1A Hyperspectral Imaging Spectrometers, which is an interferometer spectrometer put into operation in 2008. The shortwave bands of HJ-1A HSI have severe strips. Results show excellent rejection of the noise with respect to the original HJ-1A HSI images, improving the removal in those scenes with diverse materials as well as being high efficient. |
Accession Number: WOS:000325485500064 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Spectrometer Technologies and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9779-6 |
Record 21 of 103 |
Title: A Novel Color Constancy Algorithm Based on Gray-Curve Regulation |
Author(s): Guo, HN (Guo, Huinan); Zhou, ZF (Zhou, Zuofeng); Tang, Y (Tang, Yao); Cao, JZ (Cao, Jianzhong) |
Edited by: Wang Y; Yi X |
Source: FIFTH INTERNATIONAL CONFERENCE ON DIGITAL IMAGE PROCESSING (ICDIP 2013) Book Series: Proceedings of SPIE Volume: 8878 Article Number: 88784F DOI: 10.1117/12.2030932 Published: 2013 |
Abstract: Color constancy performs an important role in computer vision and digital color image processing. The traditional color regulation algorithms which are based on the gray world assumption neglect the correlation between the three stimulus color components and the nonlinear effect between the different gray levels. In this paper, we propose a novel color constancy algorithm which is based on gray-curve regulation. The proposed algorithm first divides the luminance interval into several parts and then regulates the gray-curves of RGB three channels in each subinterval which can solve the correlation and nonlinear problems simultaneously. The experiment results show the effectiveness of the proposed algorithm. |
Accession Number: WOS:000328500600159 |
Conference Title: 5th International Conference on Digital Image Processing (ICDIP) |
Conference Date: APR 21-22, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Int Assoc Comp Sci & Informat Technol, Chinese Acad Sci |
ISSN: 0277-786X |
ISBN: 978-0-8194-9305-7 |
Record 22 of 103 |
Title: Design and Simulation of Attitude Determination and Control Subsystem of CubeSat Using Extended Kalman Filtering and Linear Quadratic Gain Controller |
Author(s): Han, X (Han, Xiao); Yang, XJ (Yang, Xiaojun); Abbas, NN (Abbas, Naqvi Najam) |
Edited by: Liu XH; Zhang KF; Li MZ |
Source: MANUFACTURING PROCESS AND EQUIPMENT, PTS 1-4 Book Series: Advanced Materials Research Volume: 694-697 Pages: 1582-+ DOI: 10.4028/www.scientific.net/AMR.694-697.1582 Published: 2013 |
Abstract: This paper describes an integral scheme of the design and simulation of the Attitude Determination and Control Subsystem (ADCS) of CubeSat. CubeSat is an educational low-cost, cube-shaped Pico spacecraft. Attitude Determination (AD) is the problem of expressing the orientation of a spacecraft with respect to a given coordinate system. Three axis magneto-resistive digital magnetometer is selected as an attitude sensor. The International Geomagnetic Reference Field (IGRF) is used as reference for magnetometer to obtain attitude information. An enhanced orbit estimate/propagator is implemented to provide position information to IGRF model. Satellite environmental torque is modeled along with satellite kinematics and dynamics. Attitude estimation is done using Extended Kalman Filter (EKF) while the magnetic coils are used as actuators. Attitude Control is applied using Linear Quadratic Regulation (LQR) Controller. The designed ADCS is implemented in Matlab/Simulink. |
Accession Number: WOS:000322498500313 |
Conference Title: 4th International Conference on Manufacturing Science and Engineering (ICMSE 2013) |
Conference Date: MAR 30-31, 2013 |
Conference Location: Dalian, PEOPLES R CHINA |
Conference Sponsors: NE Univ, Harbin Inst Technol, Jilin Univ |
ISSN: 1022-6680 |
ISBN: 978-3-03785-693-2 |
Record 23 of 103 | ||||||
Title: The Realization of Network Video Monitoring System | ||||||
Author(s): Hou, ZW (Hou Zhuo-wei); Qiu, YH (Qiu Yue-hong) | ||||||
Edited by: Ohta J; Wu N; Li B | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 DOI: 10.1117/12.2031629 Published: 2013 | ||||||
Abstract: The paper presents a network video monitoring system based on field programmable gate array to implement the real time acquisition and transmission of video signals. The system includes image acquisition module, central control module and Ethernet transmission module. According to request, Cyclone FPGA is taken as the control center in the system, using Quartus II and Nios II IDE as development tool to build the hardware development platform. A kind of embedded hardware system is built based on SOPC technic, in which the Nios II soft-core and other controllers are combined by configuration. Meanwhile, the mu Clinux is used as embedded operating system to make the process of acquisition and transmission of the data picture on the Internet more reliable. In order to fulfill the task of MAC and PHY, the fast Ethernet controller should be connected to the SOPC. TCP/IP protocol is used to implement data transmission. Based on TCP/IP protocol, the Web Servers should be embedded to implement the protocol of HTTP, TCP and UDP. Through the research of the thesis, with programmable logic device being the core and network being the transmission media, the design scheme of the video monitoring system is presented. The hardware's design is mainly done in the thesis. The principal and function of the system is deeply explained, so it can be the important technology and specific method. | ||||||
Accession Number: WOS:000325484000004 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9777-2 |
Record 24 of 103 | ||||||
Title: Design of a Refractive/Diffractive Hybrid Middle Infrared Continuous Zoom Optical System | ||||||
Author(s): Hu, DD (Hu, Dandan); Zhao, JK (Zhao, Jianke); Xue, X (Xue, Xun); Liu, F (Liu, Feng); Zhang, J (Zhang, Jie); Xu, L (Xu, Liang) | ||||||
Edited by: Fu Y | ||||||
Source: ADVANCES IN OPTICS MANUFACTURE Book Series: Key Engineering Materials Volume: 552 Pages: 33-37 DOI: 10.4028/www.scientific.net/KEM.552.33 Published: 2013 | ||||||
Abstract: The application of diffractive surface in the continuous zoom system is investigated by taking advantage of the negative dispersion characteristics of binary elements. A sample design is presented in this paper using cool 320x240 detector with staring focal plane array and secondary imaging, and a mid-wave optical system using mechanical-compensated with refractive/diffractive hybrid technique is designed. The Pixel Dimensions of the detector is 30 mu m, and the wavelength between 3.7 mu m similar to 4.8 mu m. The system adopts negative group variable times and positive group of compensation which can realize 18mm similar to 180mm continuous zoom and FOV =36.8 degrees similar to 3.8 degrees, F-number is 2, it consists of 7 lenses including 2 aspheric surface and 1 diffiactive surface. The length of this system is 230mm with the reflection mirror to shorten optical path. The results show that the modulation transfer function(MTF) is above 0.6 within the whole focal range at spatial frequency of 17 lp/mm, and Root Mean Square (RMS) value of spot diameter were smaller than the Pixel Dimensions. After the image quality being optimized, the monotonic and smooth cam curve is given and 100% cold shield efficiency is obtained. The curve shows that the imaging plane is stable and the cam is easy to process. The system has advantages of simple structure, high image quality and short zoom path etc. | ||||||
Accession Number: WOS:000322090100006 | ||||||
Conference Title: 3rd Asia Pacific Conference on Optics Manufacture (APCOM 2012) | ||||||
Conference Date: AUG 26-28, 2012 | ||||||
Conference Location: Changchun, PEOPLES R CHINA | ||||||
Conference Sponsors: Changchun Univ Sci & Technol, Hong Kong Polytechn Univ, Adv Opt Mfg Ctr, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Jilin Univ, Natl Univ Defense Technol, Sci & Technol Low Light Level Night Vision Lab, Natl Key Lab High Power Semicond Laser, Info Tek Informat Sci & Technol Co Inc, Chinese Opt Soc, Opt Soc Amer, Chinese Soc Astronaut, Profess Assoc Photoelectron Technol | ||||||
Author Identifiers: | ||||||
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ISSN: 1013-9826 |
Record 25 of 103 |
Title: Alignment off-axis optical system using Nodal Aberration Theory |
Author(s): Jiang, B (Jiang Bo); Zhou, SZ (Zhou Si-zhong); Jiang, K (Jiang Kai); Fu, HY (Fu Huai-yang); Mei, C (Mei Chao) |
Edited by: Zhang L; Yang J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SPECTROMETER TECHNOLOGIES AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8910 Article Number: 89100E DOI: 10.1117/12.2032379 Published: 2013 |
Abstract: We present the Fringe Zernike coefficients of the parent system pupil can be converted into coefficients of off-axis system, it is show that the coefficients of the Fringe Zernike polynomials in the off-axis pupil only contain orders equal to or lower than the Fringe Zernike polynomials originally placed on the parent pupil, and for the 3rd aberration the pupil transformation matrix has been finding. Using nodal aberration, we get the misaligned matrix of rotational symmetry parent optical system. Then with the pupil transformation matrix, the misaligned matrix of off-axis two-mirror system was found, the amounts of the misalignments are calculated by the off-axis misaligned matrix. |
Accession Number: WOS:000325485500014 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Spectrometer Technologies and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9779-6 |
Record 26 of 103 | ||||||||||||||||||
Title: Complementary Projection Hashing | ||||||||||||||||||
Author(s): Jin, ZM (Jin, Zhongming); Hu, Y (Hu, Yao); Lin, Y (Lin, Yue); Zhang, DB (Zhang, Debing); Lin, SD (Lin, Shiding); Cai, D (Cai, Deng); Li, XL (Li, Xuelong) | ||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON COMPUTER VISION (ICCV) Book Series: IEEE International Conference on Computer Vision Pages: 257-264 DOI: 10.1109/ICCV.2013.39 Published: 2013 | ||||||||||||||||||
Abstract: Recently, hashing techniques have been widely applied to solve the approximate nearest neighbors search problem in many vision applications. Generally, these hashing approaches generate 2c buckets, where c is the length of the hash code. A good hashing method should satisfy the following two requirements: 1) mapping the nearby data points into the same bucket or nearby (measured by the Hamming distance) buckets. 2) all the data points are evenly distributed among all the buckets. In this paper, we propose a novel algorithm named Complementary Projection Hashing (CPH) to find the optimal hashing functions which explicitly considers the above two requirements. Specifically, CPH aims at sequentially finding a series of hyperplanes (hashing functions) which cross the sparse region of the data. At the same time, the data points are evenly distributed in the hypercubes generated by these hyperplanes. The experiments comparing with the state-of-the-art hashing methods demonstrate the effectiveness of the proposed method. | ||||||||||||||||||
Accession Number: WOS:000351830500033 | ||||||||||||||||||
Conference Title: IEEE International Conference on Computer Vision (ICCV) | ||||||||||||||||||
Conference Date: DEC 01-08, 2013 | ||||||||||||||||||
Conference Location: Sydney, AUSTRALIA | ||||||||||||||||||
Conference Sponsors: IEEE, CVF, IEEE Comp Soc, APRS, Australiasn Natl Univ, NICTA, FACE++, Natl Robot Engn Ctr, Google, Disney Res, nVIDIA, Raytheon BBN Technologies, Facebook, Adobe, Kitware, OMRON, SRI Int | ||||||||||||||||||
Author Identifiers: | ||||||||||||||||||
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ISSN: 1550-5499 | ||||||||||||||||||
ISBN: 978-1-4799-2839-2 |
Record 27 of 103 |
Title: Research on Detection and Correction of Defective Pixels of LASIS |
Author(s): Jing, JJ (Jing, Juanjuan); Lv, QB (Lv, Qunbo); Shi, DL (Shi, Dalian) |
Book Group Author(s): IEEE |
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON IMAGING SYSTEMS AND TECHNIQUES (IST 2013) Book Series: IEEE International Conference on Imaging Systems and Techniques Pages: 7-10 Published: 2013 |
Abstract: Due to the imperfections in producing, a finite number of pixels in an array will be defective. Regarding a Fourier transform Imaging spectrometer, the existence of defective pixels will not only affect the quality of the image, but also cause interferogram extraction error, and then result in a distortion of the reconstructed spectrum. So the defective pixels must be accurately distinguished and eliminated by data processing. In this paper, according to the characteristic of the Fourier transform Imaging spectrometer, a distinguishing and eliminating method is carried out. The Fourier transform Imaging spectrometer is illuminated by a uniform light. The data is fitted in the spatial dimension; the error between the actual data and the fitted data is computed and divided by the standard deviation. By choosing a proper threshold value, the cold, hot and non-saturated pixels can be effectively distinguished. Single defective pixels can be effectively corrected by spatial dimension interpolating; for clustered defective pixels, spatial dimension interpolating and interference dimension fitting are taken and the result is averaged. The experimental result proves that this method is effective and also efficient both for uniform light illuminated data and push broom data. |
Accession Number: WOS:000350344000002 |
Conference Title: IEEE International Conference on Imaging Systems and Techniques (IST) |
Conference Date: OCT 22-23, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: IEEE, IEEE Instrumentat & Measurement Soc |
ISSN: 2471-6162 |
ISBN: 978-1-4673-5791-3 |
Record 28 of 103 | ||||||
Title: Vibration immunity fiber optic current sensor employing a spun or twisted highly linear birefringence fiber | ||||||
Author(s): Kang, MH (Kang Menghu); Wang, YL (Wang Yingli); Xu, JT (Xu Jintao); Ren, KL (Ren Kaili); Liu, SB (Liu Shangbo) | ||||||
Book Group Author(s): IEEE | ||||||
Source: 2013 32ND CHINESE CONTROL CONFERENCE (CCC) Book Series: Chinese Control Conference Pages: 7468-7472 Published: 2013 | ||||||
Abstract: Fiber optic current sensors (FOCS) based on Faraday magneto-optical effect have plenty of privileges compared to the traditional current sensors. However, the residual linear birefringence and environmental vibration sensitive problem are the fatal drawback in Sagnac fiber optic current sensors. In this paper, a vibration immunity sensing loop with a function of passive fiber optic polarization control is proposed, which consist of a spun or twisted fiber with highly birefringence. A spun or twisted fiber possesses two crucial functions: remove the residual linear birefringence and control polarization of light. It is used as a substitute for fiber-optic quarter wave plate, which is sensitive to temperature fluctuation. Use the special fiber to encircle a distinctive geometric configuration, eliminating the influence of vibration or the Sagnac effect undesired. It has been demonstrated that the novel fiber optic current sensor has high sensitivity, considerable wide dynamic range, resistance to electromagnetic interference, and immunity of vibration. | ||||||
Accession Number: WOS:000393046007115 | ||||||
Conference Title: 32nd Chinese Control Conference (CCC) | ||||||
Conference Date: JUL 26-28, 2013 | ||||||
Conference Location: Xian, PEOPLES R CHINA | ||||||
Conference Sponsors: Syst Engn Soc China, NW Polytechn Univ, Chinese Assoc Automat, Tech Comm Control Theory, Chinese Acad Sci, Acad Math & Syst Sci, China Soc Ind & Appl Math, Xian Jiaotong Univ, Xian Univ Technol, IEEE Control Syst Soc, Soc Instrument & Control Engineers Japan, Inst Control Robot & Syst Korea | ||||||
Author Identifiers: | ||||||
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ISSN: 2161-2927 |
Record 29 of 103 | ||||||
Title: New scene-based adaptive bad pixel detection algorithm for IRFPA | ||||||
Author(s): Leng, HB (Leng Han-bing); Zhou, ZF (Zhou Zuo-feng); Liu, W (Liu Wei); Yi, B (Yi Bo); Xie, QS (Xie Qing-sheng); Wu, DS (Wu Deng-shan); Cao, JZ (Cao Jian-zhong) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89072T DOI: 10.1117/12.2033162 Published: 2013 | ||||||
Abstract: Traditional bad pixel detection algorithm is always based on the radiometric calibration. This method is easy to operate, but only suitable for the bad pixels whose positions are fixed. During the longtime operation period, environment temperature usually has drastic influence on IRFPA, the number of bad pixels often increase and their positions also vary, this result in the degradation of infrared image quality. In this paper, a new scene-based adaptive bad pixel detection algorithm is proposed for IRFPA. The algorithm firstly comparing the pixel value with its neighborhood, and affirm bad pixels preliminary through a suitable threshold. Then the potential bad pixels from different scene are matched, false bad pixels caused by scene and targets are eliminated, real bad pixels are confirmed. The essence of the proposed algorithm is using the correlation between the pixel and its neighborhood. The bad pixels and some targets in the scene have a weak correlation within neighborhoods, and the position of bad pixels varies slowly while the scene varies drastically when IRFPA is in use. This new method can be implemented in hardware easily and achieve the real time demand. With the real infrared images obtained from a camera, the experiment results show the effectiveness of the proposed algorithm. | ||||||
Accession Number: WOS:000325423700089 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 30 of 103 | ||||||
Title: Adaptive Bad Pixel Correction Algorithm for IRFPA Based on PCNN | ||||||
Author(s): Leng, HB (Leng, Hanbing); Zhou, ZF (Zhou, Zuofeng); Cao, JZ (Cao, Jianzhong); Yi, B (Yi, Bo); Yan, AQ (Yan, Aqi); Zhang, J (Zhang, Jian) | ||||||
Edited by: Zhang X; Liu J | ||||||
Source: MIPPR 2013: MULTISPECTRAL IMAGE ACQUISITION, PROCESSING, AND ANALYSIS Book Series: Proceedings of SPIE Volume: 8917 Article Number: 891705 DOI: 10.1117/12.2032065 Published: 2013 | ||||||
Abstract: Bad pixels and response non-uniformity are the primary obstacles when IRFPA is used in different thermal imaging systems. The bad pixels of IRFPA include fixed bad pixels and random bad pixels. The former is caused by material or manufacture defect and their positions are always fixed, the latter is caused by temperature drift and their positions are always changing. Traditional radiometric calibration-based bad pixel detection and compensation algorithm is only valid to the fixed bad pixels. Scene-based bad pixel correction algorithm is the effective way to eliminate these two kinds of bad pixels. Currently, the most used scene-based bad pixel correction algorithm is based on adaptive median filter (AMF). In this algorithm, bad pixels are regarded as image noise and then be replaced by filtered value. However, missed correction and false correction often happens when AMF is used to handle complex infrared scenes. To solve this problem, a new adaptive bad pixel correction algorithm based on pulse coupled neural networks (PCNN) is proposed. Potential bad pixels are detected by PCNN in the first step, then image sequences are used periodically to confirm the real bad pixels and exclude the false one, finally bad pixels are replaced by the filtered result. With the real infrared images obtained from a camera, the experiment results show the effectiveness of the proposed algorithm. | ||||||
Accession Number: WOS:000327409100005 | ||||||
Conference Title: 8th Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR) - Multispectral Image Acquisition, Processing, and Analysis | ||||||
Conference Date: OCT 26-27, 2013 | ||||||
Conference Location: Wuhan, PEOPLES R CHINA | ||||||
Conference Sponsors: Huazhong Univ Sci & Technol, Natl Key Lab Sci & Technol Multi Spectral Informat Proc, SPIE | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9802-1 |
Record 31 of 103 | ||||||
Title: The Lyman-alpha Imager onboard Solar Polar Orbit Telescope | ||||||
Author(s): Li, BQ (Li, Baoquan); Li, HT (Li, Haitao); Zhou, SZ (Zhou, Sizhong); Jiang, B (Jiang, Bo) | ||||||
Edited by: Wang Y; Yuan X; Sheng Y; Tatsuno K | ||||||
Source: 2013 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY: OPTICAL SYSTEMS AND MODERN OPTOELECTRONIC INSTRUMENTS Book Series: Proceedings of SPIE Volume: 9042 Article Number: 90420Y DOI: 10.1117/12.2035494 Published: 2013 | ||||||
Abstract: Solar Polar ORbit Telescope (SPORT) was originally proposed in 2004 by the National Space Science Center, Chinese Academy of Sciences, which is currently being under background engineering study phase in China. SPORT will carry a suite of remote-sensing and in-situ instruments to observe coronal mass ejections (CMEs), solar high-latitude magnetism, and the fast solar wind from a polar orbit around the Sun. The Lyman-alpha Imager (LMI) is one of the key remote-sensing instruments onboard SPORT with 45arcmin FOV, 2000mm effective focal length and 1.4arcsec/pixel spatial resolution. The size of LMI is phi 150x1000mm, and the weight is less than10kg, including the 7kg telescope tube and 3kg electronic box. There are three 121.6nm filters used in the LMI optical path, so the 98% spectral purity image of 121.6nm can be achieved. The 121.6nm solar Lyman-alpha line is produced in the chromosphere and very sensitive to plasma temperature, plasma velocity and magnetism variation in the chromosphere. Solar Lyman-alpha disk image is an ideal tracker for corona magnetism variation. | ||||||
Accession Number: WOS:000333046400034 | ||||||
Conference Title: International Conference on Optical Instruments and Technology - Optical Systems and Modern Optoelectronic Instruments | ||||||
Conference Date: NOV 17-19, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: China Instrument & Control Soc, SPIE | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9960-8 |
Record 32 of 103 |
Title: Ultrafast Laser Machine Based on All-fiber Femtosecond Laser System |
Author(s): Li, DJ (Li, Dongjuan); Cheng, GH (Cheng, Guanghua); Yang, Z (Yang, Zhi); Wang, YS (Wang, Yishan) |
Edited by: Jiang ZY; Liu XH; Jiao SH; Han JT |
Source: ADVANCES IN MATERIALS AND MATERIALS PROCESSING, PTS 1-3 Book Series: Advanced Materials Research Volume: 652-654 Pages: 2374-2377 DOI: 10.4028/www.scientific.net/AMR.652-654.2374 Published: 2013 |
Abstract: A femtosecond laser machine consisting of femtosecond fiber laser, trepanning head, linear motor stages system and Siemens 840D system has been integrated for industry application. The femtosecond laser source is all fiber system which contains a fiber mode-lock laser at 1053 nm with a repetition rate of 3.9 MHz, a double-cladding gain fiber amplifiers and a PCF amplifier. An acoustical modulator has employed to tune repetition rate from 3.9 MHz to 100 KHz. An in-line fiber chirped grating is used to stretch the pulse duration to 700 ps. After the PCF amplifier pulse is compressed to sub-ps with 50% efficiency based two grating compressor. The system outputs an average power of 15 W at 100 KHz and 800 fs. Using four wedges trepanning head, cylinder hole is drilled in 1mm thickness SiC ceramics in 30 s. |
Accession Number: WOS:000320475901128 |
Conference Title: 3rd International Conference on Advances in Materials Manufacturing (ICAMMP 2012) |
Conference Date: DEC 22-23, 2012 |
Conference Location: Beihai, PEOPLES R CHINA |
Conference Sponsors: Univ Wollongong, NE Univ, Univ Sci & Technol |
ISSN: 1022-6680 |
ISBN: 978-3-03785-620-8 |
Record 33 of 103 | ||||||
Title: Analysis of terahertz generation characteristic affected by injured photoconductive antenna | ||||||
Author(s): Li, H (Li Hui); Fan, WH (Fan Wen-hui); Liu, J (Liu Jia) | ||||||
Edited by: Rahm M; Vodopyanov K; Shi W; Zhang C | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: TERAHERTZ TECHNOLOGIES AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8909 Article Number: 89090I DOI: 10.1117/12.2033033 Published: 2013 | ||||||
Abstract: In this paper, we deployed a home-made THz time-domain system and experimentally investigated the influence of impairment on photoconductive antenna. The low temperature grown GaAs photoconductive antenna (PCA) was used as THz emitter and a < 110 > ZnTe crystal modulating the probe beam to detect the THz field based on electro-optic sampling. By adjusting the position of laser spot on PCA gap, we found that the generated THz signal was quite different as the laser beam irradiating on different position of the antenna's gap. Moreover, we found that the small burned holes on the edge of both metal electrodes may affect the electric field of the antenna. Furthermore, we simulated the electric field of the PCA with a DC biased voltage applied across the electrodes, and found that the simulation results agreed with the experimental phenomenon, which can well demonstrated that the impairments on the antenna electrodes have a great influence on THz generation. | ||||||
Accession Number: WOS:000325461600017 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Terahertz Technologies and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Chinese Soc Astronaut, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9778-9 |
Record 34 of 103 | ||||||||||||||||||
Title: Comparison of timing noise properties of carbon nanotubes, graphene and graphene oxide as saturable absorbers for a mode-locked Er-doped fiber laser | ||||||||||||||||||
Author(s): Li, XH (Li, Xiaohui); Wu, K (Wu, Kan); Shum, PP (Shum, Perry Ping); Wang, YG (Wang, Yonggang); Wang, YS (Wang, Yishan); Wang, QJ (Wang, Qijie) | ||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||
Source: 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) Book Series: Conference on Lasers and Electro-Optics Published: 2013 | ||||||||||||||||||
Abstract: We compare the timing noise properties of three most typical carbon materials, i.e., single walled carbon nanotubes, graphene and graphene oxide as saturable absorbers in a passively mode-locked Er-doped fiber laser as a test platform. | ||||||||||||||||||
Accession Number: WOS:000355262504041 | ||||||||||||||||||
Conference Title: Conference on Lasers and Electro-Optics (CLEO) | ||||||||||||||||||
Conference Date: JUN 09-14, 2013 | ||||||||||||||||||
Conference Location: San Jose, CA | ||||||||||||||||||
Author Identifiers: | ||||||||||||||||||
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ISSN: 2160-9020 | ||||||||||||||||||
ISBN: 978-1-55752-973-2 |
Record 35 of 103 | ||||||||||||||||||
Title: A single-walled carbon nanotube wall paper as an absorber for simultaneously achieving passively mode-locked and Q-switched Yb-doped fiber lasers | ||||||||||||||||||
Author(s): Li, XH (Li, Xiaohui); Wang, YG (Wang, Yonggang); Wang, YS (Wang, Yishan); Wang, QJ (Wang, Qijie); Zhao, W (Zhao, Wei); Zhang, YZ (Zhang, Yongzhe); Ya, X (Ya, Xia); Zhang, Y (Zhang, Ying) | ||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||
Source: PROCEEDINGS OF THE 2013 IEEE 5TH INTERNATIONAL NANOELECTRONICS CONFERENCE (INEC) Book Series: International Nanoelectronics Conference Pages: 139-142 Published: 2013 | ||||||||||||||||||
Abstract: We demonstrate a fiber ring laser based on a single-walled carbon nanotube (SWCNT) wall paper absorber. It is found that the proposed Yb-doped fiber laser can either be operated in the mode-locked states or Q-switched states. First, SWCNT wall paper acts as a mode locker when the pump power is below 80 mW. Self-started mode locking can be obtained when the pump power is about 47 mW. The proposed Yb-doped mode-locked fiber lasers can be operated in the dissipative soliton regime that the spectra have a narrow peak. Second, SWCNT wall paper acts as a Q switcher when the pump power is above 80 mW. The Yb-doped fiber laser can work in the Q-switched states at higher pump power which is quite different from the conventional pulse fiber lasers. The repetition rate increases from 30 kHz to 50 kHz and the pulse duration decreases from 2.7 mu s to 1 mu s with the increase of pump power. This is due to the SWCNT wall paper induced loss in the cavity which leads to Q-switched state at higher pump powers. The combination of the Q-switching and mode-locking in one fiber laser have potential application in the fields that require different pulse fiber lasers. | ||||||||||||||||||
Accession Number: WOS:000319409400043 | ||||||||||||||||||
Conference Title: 5th IEEE International Nanoelectronics Conference (IEEE INEC) | ||||||||||||||||||
Conference Date: JAN 02-04, 2013 | ||||||||||||||||||
Conference Location: Singapore, SINGAPORE | ||||||||||||||||||
Conference Sponsors: IEEE, IEEE Nanotech Chapter, IEEE Singapore Sect, Nanyang Technol Univ, IEEE Electron Devices Soc, BRUKER, Cascade Microtech, SHIMADZU, ZEISS, Off Naval Res Sci & Technol | ||||||||||||||||||
Author Identifiers: | ||||||||||||||||||
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ISSN: 2159-3523 | ||||||||||||||||||
ISBN: 978-1-4673-4841-6; 978-1-4673-4840-9 |
Record 36 of 103 | ||||||
Title: Color interpolation algorithm of CCD based on green components and signal correlation | ||||||
Author(s): Liang, XF (Liang, Xiaofen); Qiao, WD (Qiao, Weidong); Yang, JF (Yang, Jianfeng); Xue, B (Xue, Bin); Qin, J (Qin, Jia) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 890738 DOI: 10.1117/12.2033293 Published: 2013 | ||||||
Abstract: Signal CCD/CMOS sensors capture image information by covering the sensor surface with a color filter array(CFA). For each pixel, only one of three primary colors(red, green and blue) can pass through the color filter array(CFA). The other two missing color components are estimated by the values of the surrounding pixels. In Bayer array, the green components are half of the total pixels, but both red pixel and blue pixel components are quarter, so green components contain more information, which can be reference to color interpolation of red components and blue components. Based on this principle, in this paper, a simple and effective color interpolation algorithm based on green components and signal correlation for Bayer pattern images was proposed. The first step is to interpolate R, G and B components using the method-bilinear interpolation. The second step is to revise the results of bilinear interpolation by adding some green components on the results of bilinear interpolation. The calculation of the values to be added should consider the influence of correlation between the three channels. There are two major contributions in the paper. The first one is to demosaick G component more precisely. The second one is the spectral-spatial correlations between the three color channels is taken into consideration. At last, through MATLAB simulation experiments, experimental pictures and quantitative data for performance evaluation-Peak Signal to Noise Ratio(PSNR) were gotten. The results of simulation experiments show, compared with other color interpolation algorithms, the proposed algorithm performs well in both visual perception and PSNR measurement. And the proposed algorithm does not increase the complexity of calculation but ensures the real-time of system. Theory and experiments show the method is reasonable and has important engineering significance. | ||||||
Accession Number: WOS:000325423700102 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 37 of 103 | ||||||
Title: Design of chirped mirrors used for the dispersion compensation in femtosecond lasers | ||||||
Author(s): Liao, CY (Liao Chunyan); Qin, JJ (Qin Junjun); Hu, ML (Hu Manli) | ||||||
Edited by: Chu J; Wang C | ||||||
Source: EIGHTH INTERNATIONAL CONFERENCE ON THIN FILM PHYSICS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 9068 Article Number: 90680K DOI: 10.1117/12.2053961 Published: 2013 | ||||||
Abstract: Negative dispersion dielectric multilayer mirrors have contributed significantly to the enhancement of the performance, compactness and reliability of femtosecond lasers. There are two alternative approaches that are widely investigated for dispersion compensation: chirped mirrors and Gires-Tournois mirrors. Chirped mirrors can exhibit a broad smooth high-reflectance range if the layer thickness is superimposed a quasi-periodic modulation on a linear variation of the optical thickness of the layers. The performance of such chirped mirrors is calculated and the factors affecting the performance are discussed in detail. In such chirped mirrors, the performance is strongly affected by the expected bandwidth and modulation period of the optical thickness of the layers. | ||||||
Accession Number: WOS:000329162500020 | ||||||
Conference Title: 8th International Conference on Thin Film Physics and Applications (TFPA) | ||||||
Conference Date: SEP 20-23, 2013 | ||||||
Conference Location: Shanghai, PEOPLES R CHINA | ||||||
Conference Sponsors: Donghua Univ, Coll Sci, Dept Appl Phys, Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, CAS, Shanghai Inst Techn Phys, Opt Coating & Mat Dept, Natl Nat Sci Fdn China, Sci & Technol Commiss Shanghai Municipal, Chinese Phys Soc, Shanghai Phys Soc | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9997-4 |
Record 38 of 103 | ||||||
Title: Arbitrary Waveform Generator Based on GaAs FET and Tapered Micro-Strip Line | ||||||
Author(s): Lin, P (Lin, Ping); Liu, BY (Liu, Baiyu); Gou, YS (Gou, Yongsheng); Bai, YL (Bai, Yonglin); Wang, B (Wang, Bo); Zhao, XQ (Zhao, Xueqing) | ||||||
Edited by: Jiang ZY; Liu XH; Jiao SH; Han JT | ||||||
Source: ENGINEERING SOLUTIONS FOR MANUFACTURING PROCESSES, PTS 1-3 Book Series: Advanced Materials Research Volume: 655-657 Pages: 1581-+ DOI: 10.4028/www.scientific.net/AMR.655-657.1581 Published: 2013 | ||||||
Abstract: In order to improve the output power of laser pulse in the inertia confinement fusion experiment, an arbitrary waveform generator is fabricated to shape the laser pulse. The arbitrary waveform generator is based on the impedance tapered micro-strip line technology and GaAs Field Effect Transistor set which has a good ability of generating voltage-controlled current. With the impedance tapered micro-strip line technology, the arbitrary waveform generator generates shaping electrical pulse with duration less than 10 ns, 330 ps time-domain adjustment. We use the shaping electrical pulse to modulate semiconductor laser which has the characteristic of direct modulate, the experiment results show the shaped laser pulse is obtained based on the shaping electrical pulse. | ||||||
Accession Number: WOS:000320411700313 | ||||||
Conference Title: 3rd International Conference on Advances in Materials Manufacturing (ICAMMP 2012) | ||||||
Conference Date: DEC 22-23, 2012 | ||||||
Conference Location: Beihai, PEOPLES R CHINA | ||||||
Conference Sponsors: Univ Wollongong, NE Univ, Univ Sci & Technol | ||||||
Author Identifiers: | ||||||
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ISSN: 1022-6680 | ||||||
ISBN: 978-3-03785-648-2 |
Record 39 of 103 |
Title: Key Technologies Research of New Generation Concentrating Photovoltaic |
Author(s): Liu, CT (Liu, Chuntong); Li, B (Li, Bing); Wang, T (Wang, Tao); Li, HC (Li, Hongcai) |
Edited by: Wang A; Che LK; Dong R; Zhao G |
Source: APPLIED ENERGY TECHNOLOGY, PTS 1 AND 2 Book Series: Advanced Materials Research Volume: 724-725 Pages: 171-+ DOI: 10.4028/www.scientific.net/AMR.724-725.171 Published: 2013 |
Abstract: The new concentrating photovoltaic (CPV) with core technology of III-V multi-junction cells, can significantly reduce the cost of photovoltaic system, and with advantages of high conversion rate, light weight, small size, energy saving and environmental protection, etc, which was widely regarded as the next-generation of solar photovoltaic technology. On the basis of the introduction of related research process, the paper concentrating discuss on the key technologies such as the new efficient multi-junction cells, high performance non-imaging concentrated light technology and sun tracking system, and propose the appropriate technical solutions, which can provide reference for the application and dissemination of the new generation concentrating photovoltaic. |
Accession Number: WOS:000328999700032 |
Conference Title: 2nd International Conference on Energy and Environmental Protection (ICEEP 2013) |
Conference Date: APR 19-21, 2013 |
Conference Location: Guilin, PEOPLES R CHINA |
Conference Sponsors: Inner Mongolia Univ, Chinese Acad Sci, Res Ctr Eco Environm Sci, Key Lab Environm Biotechnol |
ISSN: 1022-6680 |
ISBN: 978-3-03785-741-0 |
Record 40 of 103 | |||||||||
Title: A Research on Navigation Star Catalog Selection Algorithm Based on SVM | |||||||||
Author(s): Liu, FC (Liu, Fucheng); Liu, ZH (Liu, Zhaohui); Liu, W (Liu, Wen); Liang, DS (Liang, Dongsheng); Cui, K (Cui, Kai); Yuan, H (Yuan, Hui) | |||||||||
Edited by: Chen R; Sung WP; Kao JCM | |||||||||
Source: MECHATRONICS AND INTELLIGENT MATERIALS III, PTS 1-3 Book Series: Advanced Materials Research Volume: 706-708 Pages: 613-617 DOI: 10.4028/www.scientific.net/AMR.706-708.613 Published: 2013 | |||||||||
Abstract: A navigation star catalog (NSC) selection algorithm via support vector machine (SVM) is proposed in this paper. The sphere spiral method is utilized to generate the sampling boresight directions by virtue of obtaining the uniform sampling data. Then the theory of regression analysis methods is adopted to extract the NSC,I, and an evenly distributed and small capacity NSC is obtained. Two criterions, namely a global criterion and a local criterion, are defined as the uniformity criteria to test the performance of the NSC generated. Simulations show that, compared with MFM, magnitude weighted method (MWM) and self-organizing algorithm(S-OA), the Boltzmann entropy (B.e) of SVM selection algorithm (SVM-SA) is the minimum, to 0.00207. Simultaneously, under the conditions such as the same field of view (FOV) and elimination of the hole, both the number of guide stars (NGS) and standard deviation (std) of SVM-SA is the least, respectively 7668 and 2.17. Consequently, the SVM-SA is optimal in terms of the NGS and the uniform distribution, and has also a strong adaptability. | |||||||||
Accession Number: WOS:000323912100137 | |||||||||
Conference Title: 3rd International Conference on Mechatronics and Intelligent Materials (MIM 2013) | |||||||||
Conference Date: MAY 18-19, 2013 | |||||||||
Conference Location: XiShuangBanNa, PEOPLES R CHINA | |||||||||
Author Identifiers: | |||||||||
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ISSN: 1022-6680 | |||||||||
ISBN: 978-3-03785-710-6 |
Record 41 of 103 | ||||||
Title: A New Algorithm of Inter-frame Filtering in IR Image Based on Threshold Value | ||||||
Author(s): Liu, W (Liu Wei); Leng, HB (Leng Hanbing); Chen, WN (Chen Weining); Yang, HT (Yang Hongtao); Xie, QS (Xie Qingsheng); Yi, B (Yi Bo); Zhang, HF (Zhang Haifeng) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89072N DOI: 10.1117/12.2033067 Published: 2013 | ||||||
Abstract: This paper proposed a new algorithm of inter-frame filtering in IR image based on threshold value for the purpose of solving image blur and smear brought by traditional inter-frame filtering algorithm. At first, it finds out causes of image blur and smear by analyzing general inter-frame filtering algorithm and dynamic inter-frame filtering algorithm, hence to bring up a new kind of time-domain filter. In order to obtain coefficients of the filter, it firstly gets difference image of present image and previous image, and then, it gets noisy threshold value by analyzing difference image with probability analysis method. The relationship between difference image and threshold value helps obtaining the coefficients of filter. At last, inter-frame filtering method is adopted to process pixels interrupted by noise. The experimental result shows that this algorithm has successfully repressed IR image blur and smear, and NETD tested by traditional inter filtering algorithm and the new algorithm are respectively 78mK and 70mK, which shows it has a better noise reduction performance than traditional ones. The algorithm is not only applied to still image, but also to sports image. As a new algorithm with great practical value, it is easy to achieve on FPGA, of excellent real-time performance and it effectively extends application scope of time domain filtering algorithm. | ||||||
Accession Number: WOS:000325423700083 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 42 of 103 | ||||||
Title: Calculation of signal-to-noise ratio (SNR) of infrared detection system based on MODTRAN Model | ||||||
Author(s): Lu, X (Lu, Xue); Li, C (Li, Chuang); Fan, XW (Fan, Xuewu) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89072K DOI: 10.1117/12.2033048 Published: 2013 | ||||||
Abstract: Signal-to-noise ratio (SNR) is an important parameter of infrared detection system. SNR of infrared detection system is determined by the target infrared radiation, atmospheric transmittance, background infrared radiation and the detector noise. The infrared radiation flux in the atmosphere is determined by the selective absorption of the gas molecules, the atmospheric environment, and the transmission distance of the radiation, etc, so the atmospheric transmittance and infrared radiance flux are intricate parameters. A radiometric model for the calculation of SNR of infrared detection system is developed and used to evaluate the effects of various parameters on signal-to-noise ratio (SNR). An atmospheric modeling tool, MODTRAN, is used to model wavelength-dependent atmospheric transmission and sky background radiance. Then a new expression of SNR is deduced. Instead of using constants such as average atmospheric transmission and average wavelength in traditional method, it uses discrete values for atmospheric transmission and sky background radiance. The integrals in general expression of SNR are converted to summations. The accuracy of SNR obtained from the new method can be improved. By adopting atmospheric condition of the 1976 US standard, no clouds urban aerosols, fall-winter aerosol profiles, the typical spectrum characters of sky background radiance and transmittance are computed by MODTRON. Then the operating ranges corresponding to the threshold quantity of SNR are calculated with the new method. The calculated operating ranges are more close to the measured operating range than those calculated with the traditional method. | ||||||
Accession Number: WOS:000325423700081 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 43 of 103 |
Title: Image Fusion Based on Non-negative Matrix Factorization and Infrared Feature Extraction |
Author(s): Mou, J (Mou, Jiao); Gao, W (Gao, Wei); Song, ZX (Song, Zongxi) |
Edited by: Yuan Z; Wang L; Xu W; Yu K |
Source: 2013 6TH INTERNATIONAL CONGRESS ON IMAGE AND SIGNAL PROCESSING (CISP), VOLS 1-3 Pages: 1046-1050 Published: 2013 |
Abstract: A new effective fusion method based on non-negative matrix factorization (NMF) and infrared target extraction is presented for infrared and visible images fusion. The two source images are taken as original data in NMF analysis, from which the feature base containing the global features of the source images can be extracted. The feature base image is replaced by the adjusted visible image, which is histogram matched with the raw feature base. As non-negative matrix factorization image fusion algorithm lacks details, we introduce a local gradient as an active measure, and combine weighting and selection methods to fuse the visible image with the feature base image. Then the target regions from infrared image are segmented through edge detection, region growing and morphological processing methods. The segmented target regions are fused with the background regions of the feature base image. Experiment indicates that the proposed method is simple in calculation. And it can retain texture details of visible image, highlight the thermal target of infrared image and enhance the readability of source images. |
Accession Number: WOS:000341115000194 |
Conference Title: 6th International Congress on Image and Signal Processing (CISP) |
Conference Date: DEC 16-18, 2013 |
Conference Location: Hangzhou, PEOPLES R CHINA |
Conference Sponsors: IEEE, Hangzhou Normal Univ, EMB |
ISBN: 978-1-4799-2763-0 |
Record 44 of 103 | ||||||
Title: A New Infrared Image Processing Method Based on Compressed Sensing | ||||||
Author(s): Mu, CH (Mu, Chenhao); Qiu, YH (Qiu, Yuehong); Chen, Z (Chen, Zhi) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89073F DOI: 10.1117/12.2033567 Published: 2013 | ||||||
Abstract: In order to improve the efficiency of processing the large amount of data of infrared image, in this paper we develop a new infrared image processing method based on compressed sensing (CS) and simulate the method. The basic idea behind CS is that a signal or image, unknown but supposed to be compressible by a known transform, (eg. wavelet), can be subjected to fewer measurements than the nominal number of pixels, and yet be accurately reconstructed. According to the properties of wavelet transform sub-bands, firstly we make wavelet transform which change the infrared image into a wavelet coefficients matrix. Acquired the features of infrared image, the characters of the wavelet coefficients can be concluded. When deeply analyzing the data of the wavelet coefficient, we can easily find the high-pass wavelet coefficients of the image are sparse enough to measure, while the low-pass wavelet coefficients are not appropriate for measure. So in this second part, only measured the high-pass wavelet coefficients of the image but preserving the low-pass wavelet coefficients. For the reconstruction, the third part, by using the orthogonal matching pursuit (OMP) algorithm, high-pass wavelet coefficients could be recovered by the measurements. Finally the image could be reconstructed by the inverse wavelet transform. The simulation proves that applying the CS theory to the realm of infrared picture can decrease the amount of data which must be collected. Besides, compared with the original compressed sensing algorithm, simulation results demonstrated that the proposed algorithm improved the quality of the recovered image significantly. | ||||||
Accession Number: WOS:000325423700108 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 45 of 103 | ||||||||||||
Title: Target Optimization Design of Cam Curve In Zoom System | ||||||||||||
Author(s): Ning, CW (Ning, Chenwei); Zhong, CJ (Zhong, Caojian); Tao, YH (Tao, Yanghong); Jian, Z (Jian, Zhang); Yuan, FZ (Yuan, Fanzhe); Li, W (Li, Wu); Hui, Z (Hui, Zhang); Jie, LY (Jie, Leiyang) | ||||||||||||
Edited by: Fu Y | ||||||||||||
Source: ADVANCES IN OPTICS MANUFACTURE Book Series: Key Engineering Materials Volume: 552 Pages: 44-51 DOI: 10.4028/www.scientific.net/KEM.552.44 Published: 2013 | ||||||||||||
Abstract: Zoom lens has been widely applied in all kinds of fields, and its cam optimization is the key to actualizing the performance of its optical design and the zooming process, while the smoothness and speediness of zooming movement must be considered for military and civilian use. With the incremental use of environmental requirements, it puts forward higher requests to the cam performance of lens. In order to guarantee that the cam has good stiffness in the case of vibration and shock environment, in the process of cam design, it not only requires curve optimal, but also needs to consider influence on the performance which is caused by reduced cam stiffness of the zoom system. A fine curve can ensure that the cam pressure angle alpha is smaller, and to ensure the cam follower maintains the uniform velocity and smaller acceleration in zooming process, and make the zoom system produce little impact, and whole zooming process smooth and fluent, it can reduce the zoom systems driving moment M, and can ensure the stability imaging of the zoom system. Good cam stiffness K can make the zoom lens have good stability in vibration environment, and make sure that the image quality. M and K respectively up to the pressure angle alpha of zoom curve and the rotation angle theta of zoom curve in cam. In the new cam design process, considering the whole influence on the performance that is caused by K and Mto cam, we construct the function expressions K = f (alpha, theta) and M=f (alpha, theta), and then, build target optimization function with K and M, optimize the relationship between pressure angle alpha of zoom curve and rotation angle theta, looking for the optimal value for the stiffness K and the cam system driving moment M, and improve overall performance of the zoom cam. | ||||||||||||
Accession Number: WOS:000322090100008 | ||||||||||||
Conference Title: 3rd Asia Pacific Conference on Optics Manufacture (APCOM 2012) | ||||||||||||
Conference Date: AUG 26-28, 2012 | ||||||||||||
Conference Location: Changchun, PEOPLES R CHINA | ||||||||||||
Conference Sponsors: Changchun Univ Sci & Technol, Hong Kong Polytechn Univ, Adv Opt Mfg Ctr, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Jilin Univ, Natl Univ Defense Technol, Sci & Technol Low Light Level Night Vision Lab, Natl Key Lab High Power Semicond Laser, Info Tek Informat Sci & Technol Co Inc, Chinese Opt Soc, Opt Soc Amer, Chinese Soc Astronaut, Profess Assoc Photoelectron Technol | ||||||||||||
Author Identifiers: | ||||||||||||
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ISSN: 1013-9826 |
Record 46 of 103 | |||||||||||||||||||||
Title: Saliency Cut in Stereo Images | |||||||||||||||||||||
Author(s): Peng, JT (Peng, Jianteng); Shen, JB (Shen, Jianbing); Jia, YD (Jia, Yunde); Li, XL (Li, Xuelong) | |||||||||||||||||||||
Book Group Author(s): IEEE | |||||||||||||||||||||
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON COMPUTER VISION WORKSHOPS (ICCVW) Pages: 22-28 DOI: 10.1109/ICCVW.2013.10 Published: 2013 | |||||||||||||||||||||
Abstract: In this paper, we propose a novel saliency-aware stereo images segmentation approach using the high-order energy items, which utilizes the disparity map and statistical information of stereo images to enrich the high-order potentials. To the best of our knowledge, our approach is first one to formulate the automatic stereo cut as the high-order energy optimization problems, which simultaneously segments the foreground objects in left and right images using the proposed high-order energy function. The relationships of stereo correspondence by disparity maps are further employed to enhance the connections between the left and right images. Experimental results demonstrate that the proposed approach can effectively improve the saliency-aware segmentation performance of stereo images. | |||||||||||||||||||||
Accession Number: WOS:000349847200005 | |||||||||||||||||||||
Conference Title: IEEE International Conference on Computer Vision (ICCV) | |||||||||||||||||||||
Conference Date: DEC 01-08, 2013 | |||||||||||||||||||||
Conference Location: Sydney, AUSTRALIA | |||||||||||||||||||||
Conference Sponsors: IEEE, CVF, IEEE Comp Soc, APRS, Australiasn Natl Univ, NICTA, FACE++, Natl Robot Engn Ctr, Google, Disney Res, nVIDIA, Raytheon BBN Technologies, Facebook, Adobe, Kitware, OMRON, SRI Int | |||||||||||||||||||||
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ISBN: 978-1-4799-3022-7 |
Record 47 of 103 |
Title: Design of Camera and Spectrometer Dual-use System |
Author(s): Qi, YH (Qi Yong-hong); Xue, B (Xue Bin); Zhao, YY (Zhao Yi-yi); Tao, JY (Tao Jin-you) |
Edited by: Zhang L; Yang J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SPECTROMETER TECHNOLOGIES AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8910 Article Number: 891014 DOI: 10.1117/12.2033622 Published: 2013 |
Abstract: Imaging spectrometers based on prism-grating-prism (PGP) have advantage of direct vision, as a basis for the design of an optical system for a spectrometer and camera dual-use, the system can plug the light splitting element to switch between the spectrometer and camera. This paper has discussed the working principles and structure of the PGP and spectrometer, collimating and focusing lens design principles, then the design result has been presented. The spectral range of the system is 400-800nm, the pixel size of CCD used is 10um x 10um, 1010 x 1018 pixels, the object space numerical aperture is 0.1. In order to reduce the cost and eliminate aberration, collimating lens and focusing lens have symmetric structure, in order to improve the diffraction efficiency, PGP uses the volume phase holographic transmission grating. After optimization the design by ZEMAX software, the whole spectral range resolution is better than 1nm in average, the MTF at Nyquist frequency is greater than 0.7, the length of the whole system is 87mm. |
Accession Number: WOS:000325485500038 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Spectrometer Technologies and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9779-6 |
Record 48 of 103 |
Title: A Design of Intelligent Transfusion Monitoring System Based on the DSP and Fuzzy Control Algorithm |
Author(s): Qiao, YM (Qiao, Yongming); Wu, XF (Wu, Xiangfu) |
Book Group Author(s): IEEE |
Source: PROCEEDINGS OF THE 2013 FOURTH INTERNATIONAL CONFERENCE ON INTELLIGENT CONTROL AND INFORMATION PROCESSING (ICICIP) Pages: 417-421 Published: 2013 |
Abstract: Aiming at resolving the defects of manual monitoring during the clinical transfusion process presently, this paper designs an intelligent transfusion monitoring system which uses TMS320F28335 as the microcontroller core. This system is a master-slave distributed architecture. The master station at the health care room can remotely monitor the transfusion process with the help of the application that operates on PC, whereas the slave station, a DSP embedded system, uses a miniature peristaltic pump driven by stepper motor to control the transfusion speed based on the fuzzy control algorithm. The master station can communicate with slave stations with wireless modules through the serial port, so nurses can timely monitor the transfusion process. The experimental results show that this system has advantages such as high accuracy of speed adjustment, quick response and low steady-state error. Because of the good performance and low cost, this system can be widely used in clinical transfusion and pharmaceutical composition analysis occasions. |
Accession Number: WOS:000326374300082 |
Conference Title: 4th International Conference on Intelligent Control and Information Processing (ICICIP) |
Conference Date: JUN 09-11, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: IEEE, Inst Automat, Chinese Acad Sci, Univ Illinois Chicago, Natl Nat Sci Fdn China |
ISBN: 978-1-4673-6249-8; 978-1-4673-6248-1 |
Record 49 of 103 |
Title: Theoretical study on balanced homodyne detection technique in preparation of squeezed states of light |
Author(s): Qu, WY (Qu Wen-yan); Feng, F (Feng Fei); Song, JZ (Song Jia-zheng); Zhang, TY (Zhang Tong-yi) |
Edited by: Chang B; Guo H |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LOW-LIGHT-LEVEL TECHNOLOGY AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8912 Article Number: 891218 DOI: 10.1117/12.2034576 Published: 2013 |
Abstract: We analyze the balanced homodyne detection technique in the detection of squeezed light, which is controlled by dither locking scheme. We discuss how the balanced homodyne detection efficiency influences the detected degree of squeezing. Also, fluctuation in the relative phase between the local beam and the squeezed light is discussed, since a little phase fluctuation would decrease the detected degree of squeezing greatly. Then, the dither locking technique is studied in detail, which is used to lock the relative phase between the local beam and the squeezed light. The simulation experiments and theoretically results show that the balanced homodyne detection technique and the dither locking scheme are efficient methods to get more accurate degree of squeezing in the preparation of the squeezed states of light. |
Accession Number: WOS:000325349800042 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Low-Light-Level Technology and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9781-9 |
Record 50 of 103 |
Title: Numerical Analysis of Large Mode Area Segmented Cladding Fibers |
Author(s): Shao, HM (Shao, Hongmin); Duan, KL (Duan, Kailiang); Zhu, YG (Zhu, Yonggang); Yang, HN (Yang, Hening) |
Edited by: Chen Q; Zhou M; Chai R |
Source: 2013 22ND WIRELESS AND OPTICAL COMMUNICATIONS CONFERENCE (WOCC 2013) Pages: 491-494 Published: 2013 |
Abstract: we analyze numerically the dependence of segmented cladding fibers (SCF) characters, including the effective V-number, the effective fundamental mode area and the permissible bending radius of fundamental mode, on the structure parameters of the fiber and the signal wavelength with the methods of radial effective index and transmission matrix. The results show that a single mode and large mode area fiber with an acceptable permissible bending radius can be obtained when we design SCF with optimized structure parameters. The effective fundamental area is as large as 1948.93 mu m(2) with proper fiber parameters. It will benefit the fabrication of the SCF for applications in high power fiber lasers. |
Accession Number: WOS:000332527100094 |
Conference Title: 22nd Wireless and Optical Communications Conference (WOCC) |
Conference Date: MAY 16-18, 2013 |
Conference Location: Chongqing Univ Posts & Telecommunicat, Chongqing, PEOPLES R CHINA |
Conference Sponsors: IEEE |
Conference Host: Chongqing Univ Posts & Telecommunicat |
ISBN: 978-1-4673-5697-8; 978-1-4673-5699-2 |
Record 51 of 103 | ||||||
Title: The Applications of Laser Tracking and Ranging Technology in Space Rendezvous and Docking | ||||||
Author(s): She, WJ (She Wenji); Gao, LM (Gao Limin); Zhou, L (Zhou Liang); Li, DW (Li Dawei); Wang, R (Wang Rong) | ||||||
Edited by: Amzajerdian F; Aksnes A; Chen W; Gao C; Zheng Y; Wang C | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER SENSING AND IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8905 Article Number: 89050S DOI: 10.1117/12.2033065 Published: 2013 | ||||||
Abstract: With the development of space technology, more and more Rendezvous and Docking (RVD) mission require more precise measurement of relative position and attitude between tracking spacecraft and target spacecraft. In the procedure of docking between near spacecraft, the optical retroreflector on the target Spacecraft were tracked by the laser tracking and ranging device on the tracking spacecraft, the distance data were provided by laser ranging system, and the azimuth data were provided by tracking gimbal, Synthesized the distance data and azimuth data, the relative position information between two spacecraft were provided to the target spacecraft. Furthermore, through tracking more than three point on the target spacecraft, the complete information of relative position and attitude between two spacecraft were calculated rapidly by the measurement system, which were presented to the control system during the whole RVD operating stage. The laser tracking technology guaranteed continuous measurement and supplied accurate azimuth information, and the laser ranging technology ensured high accuracy of distance information. In addition, the untouched measure mode give no disturbance to the docking operation, moreover, the monochromaticity of laser make the tracking and ranging procedure avoiding to be disturbed by parasitic light of space, thus there will be a effective measurement accompanying the whole docking operating procedure and affording valid data to the control system of docking. | ||||||
Accession Number: WOS:000326651200028 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging - Laser Sensing and Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9774-1 |
Record 52 of 103 |
Title: Calibration and correction of the CCD spectral response nonuniformity for Fourier transform imaging spectrometer |
Author(s): Shi, DL (Shi Dalian); Liu, XB (Liu Xuebin); Wang, S (Wang Shuang); Jing, JJ (Jing Juanjuan); Wen, DS (Wen Desheng); Bai, QL (Bai Qinglan) |
Edited by: Zhang L; Yang J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SPECTROMETER TECHNOLOGIES AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8910 Article Number: 89101C DOI: 10.1117/12.2034271 Published: 2013 |
Abstract: Due to the manufacturing technique, some kinds of CCD, such as the back illuminated CCD, have the problem of spectral response nonuniformity. The near infrared light passing through the substrate and gates and is reflected back into the substrate for a second pass resulting in increased response. For the Fourier transform imaging spectrometer, it adds stripe pattern error to the interferogram and distorts the reconstructed spectrum. The nonuniform response is wavelength dependent due to changes in reflectivity of metal and the cavity formed by silicon and metal with transparent dielectric, so it adds difficulty to the correction of the error of the reconstructed spectrum. |
Accession Number: WOS:000325485500046 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Spectrometer Technologies and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9779-6 |
Record 53 of 103 | |||||||||
Title: Diode-pumped Yb:YAG thin disk laser with a novel multi-pass pump and cooling arrangement | |||||||||
Author(s): Song, QG (Song, Qiongge); Cheng, GH (Cheng, Guanghua); Zhu, JF (Zhu, Jiangfeng) | |||||||||
Edited by: Zheng L; Skuroda S; Liu H; Du B; Wei J; Zhao Y | |||||||||
Source: APPLIED MATERIALS AND TECHNOLOGIES FOR MODERN MANUFACTURING, PTS 1-4 Book Series: Applied Mechanics and Materials Volume: 423-426 Pages: 2074-+ DOI: 10.4028/www.scientific.net/AMM.423-426.2074 Published: 2013 | |||||||||
Abstract: We demonstrate a Yb:YAG thin disk laser with multi-pass diode-pumped structure and direct water cooling device. In the pump system, four passes of the pump radiation are focused on the thin disk using a center-punched spherical lens. The thin disk serves as the window of a copper tank and is directly cooled with recycle water-contacted method. The thin disk laser has a low pump at the threshold of operation. We obtained 450 mW output power around 1030 nm in a simple F-P resonant cavity. | |||||||||
Accession Number: WOS:000339363800406 | |||||||||
Conference Title: 3rd International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2013) | |||||||||
Conference Date: AUG 24-25, 2013 | |||||||||
Conference Location: Dalian, PEOPLES R CHINA | |||||||||
Conference Sponsors: Dalian Polytechn Univ, Liaoning Key Lab Clean Text, Liaoning Engn Technol Res Ctr Clean Text | |||||||||
Author Identifiers: | |||||||||
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ISSN: 1660-9336 | |||||||||
ISBN: 978-3-03785-888-2 |
Record 54 of 103 |
Title: The Research of Relay Lens Coupling in Image Intensified Camera |
Author(s): Sun, X (Sun Xin); Hu, BL (Hu Bing-liang); Zou, CB (Zou Chun-bo); Bai, QL (Bai Qing-lan); Wang, L (Wang Le) |
Edited by: Chang B; Guo H |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LOW-LIGHT-LEVEL TECHNOLOGY AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8912 Article Number: 89121E DOI: 10.1117/12.2034709 Published: 2013 |
Abstract: Image Intensified CCD (ICCD) camera is widely used in the field of low-light-level image detection. The crucial part of ICCD, coupling component, which realizes the image transmitting between the image intensifier and detector, affects the final performance of the ICCD camera significantly. There are two means of coupling: relay lens and optical fiber taper (OFT). OFT has the merits of small volume and relatively high coupling efficiency, therefore it is commonly used in the portable devices or applications with less precision demands. However, relay lens turns out to be a better solution other than OFT for the applications with no volume and weight restrictions, since it provides higher resolution, perfect image plane uniformity and manufacture flexibility. In this paper, we discuss a methodology of high performance relay lens design and based on the method a solid design is proposed. There are three major merits of the lens design. Firstly, the lens has large object space numerical aperture and thus the coupling efficiency reaches 5% at the magnification of 0.25. Secondly, the lens is telecentric in both sides of object space and image space, this feature guarantees uniform light collection over the field of view and uniform light receiving on the detector plane. Finally, the design can be conveniently optimized to meet the needs of different type of image intensifier. Moreover, the paper presents a prototype ICCD camera and a series of imaging experiment as well. The experiment results prove the validity of the foregoing analysis and optical design. |
Accession Number: WOS:000325349800048 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Low-Light-Level Technology and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
ISBN: 978-0-8194-9781-9 |
Record 55 of 103 | |||||||||
Title: Design of calibration system for a great quantity of high precision scientific grade CCD cameras | |||||||||
Author(s): Tan, JH (Tan Jia-hai); Li, PY (Li Peng-yu); Qu, YS (Qu You-shan); Han, YM (Han Ya-meng); Yu, YL (Yu Ya-li); Wang, W (Wang Wei) | |||||||||
Book Author(s): Xu, JM (Xu, JM) | |||||||||
Source: 2013 INTERNATIONAL CONFERENCE ON PROCESS EQUIPMENT, MECHATRONICS ENGINEERING AND MATERIAL SCIENCE Book Series: Applied Mechanics and Materials Volume: 331 Pages: 326-+ DOI: 10.4028/www.scientific.net/AMM.331.326 Published: 2013 | |||||||||
Abstract: For the calibration of a great quantity of scientific grade CCD cameras in the high energy physics system, a scientific grade CCD camera calibration system with high precision and efficiency is designed. The designed camera calibration system consists of a 1053nm nanosecond solid-state laser, a knife, a double-integrating sphere, a laser power meter, a signal generator, a computer with its data processing software. Key technical parameters of scientific grade CCD under the condition of 1053nm optical pulses that are the modulation, contrast, defects, optical dynamic range, non-linear response can be calibrated by the designed calibration system. A double-integrating sphere with high uniformity and stability is designed as a uniform light source, which improves the calibrating performance and accuracy. Experimental results show the system designed in this paper can calibrate the large number of scientific grade CCD cameras quickly and efficiently. | |||||||||
Accession Number: WOS:000324148600071 | |||||||||
Conference Title: International Conference on Process Equipment, Mechatronics Engineering and Material Science | |||||||||
Conference Date: JUN 15-16, 2013 | |||||||||
Conference Location: Wuhan, PEOPLES R CHINA | |||||||||
Conference Sponsors: Wuhan Inst Technol, Wuhan Univ Sci & Technol, Deaking Univ, Hubei Mech Engn Soc | |||||||||
Author Identifiers: | |||||||||
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ISSN: 1660-9336 | |||||||||
ISBN: 978-3-03785-726-7 |
Record 56 of 103 | ||||||
Title: A novel weighted-direction color interpolation | ||||||
Author(s): Tao, JY (Tao Jin-you); Yang, JF (Yang Jian-feng); Xue, B (Xue Bin); Liang, XF (Liang Xiao-fen); Qi, YH (Qi Yong-hong); Wang, F (Wang Feng) | ||||||
Edited by: Ohta J; Wu N; Li B | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 DOI: 10.1117/12.2032500 Published: 2013 | ||||||
Abstract: A digital camera capture images by covering the sensor surface with a color filter array (CFA), only get a color sample at pixel location. Demosaicking is a process by estimating the missing color components of each pixel to get a full resolution image. In this paper, a new algorithm based on edge adaptive and different weighting factors is proposed. Our method can effectively suppress undesirable artifacts. Experimental results based on Kodak images show that the proposed algorithm obtain higher quality images compared to other methods in numerical and visual aspects. | ||||||
Accession Number: WOS:000325484000019 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9777-2 |
Record 57 of 103 | ||||||||||||
Title: Development of streak camera with anisotropic focusing electron optical system | ||||||||||||
Author(s): Tian, J (Tian, J.); Ding, Y (Ding, Y.); Cao, X (Cao, X.); Liu, S (Liu, S.); Xu, X (Xu, X.); Hu, X (Hu, X.); Wen, W (Wen, W.); Wang, J (Wang, J.); Wang, C (Wang, C.); Liu, H (Liu, H.); Dong, G (Dong, G.); Zhang, T (Zhang, T.); Lu, Y (Lu, Y.); Wang, X (Wang, X.); Liu, J (Liu, J.) | ||||||||||||
Edited by: Kaierle S; Liu J; Cao J | ||||||||||||
Source: 2ND INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER (LIMIS 2012) Book Series: Proceedings of SPIE Volume: 8796 Article Number: 87960Z DOI: 10.1117/12.2008988 Published: 2013 | ||||||||||||
Abstract: In this paper, the anisotropic focusing technique is used to make a novel streak tube. The salient features are the introduction of both temporally focusing electrodes and spatially focusing electric quadrupole lens. The simulation showed that physical temporal dispersion of 0.38 ps and edge spatial resolution of 56 lp/mm can be achieved. The Nd: YLF 8ps pulse laser was used to calibrate the performance index of streak camera. The static and dynamic spatial resolutions are 35 lp/mm and 25 lp/mm respectively. The dynamic range more than 950: 1 and time resolution 8ps can be reached. Furthermore, the magnifications in slit and scanning direction can be adjusted respectively, so it is very convenient to select amplification needed when it is coupled with KB microscope. | ||||||||||||
Accession Number: WOS:000323339600035 | ||||||||||||
Conference Title: 2nd International Symposium on Laser Interaction with Matter (LIMIS) | ||||||||||||
Conference Date: SEP 09-12, 2012 | ||||||||||||
Conference Location: Xian, PEOPLES R CHINA | ||||||||||||
Conference Sponsors: State Key Lab Laser Interact Matter, CIOMP, Publicat Dept, NW Inst Nucl Technol, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Chinese Opt Soc, European Laser Inst, Opt Soc, Shaanxi Opt Soc, Japan Soc Promot Sci | ||||||||||||
Author Identifiers: | ||||||||||||
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ISSN: 0277-786X | ||||||||||||
eISSN: 1996-756X | ||||||||||||
ISBN: 978-0-8194-9639-3 |
Record 58 of 103 |
Title: Simulation of laser beam propagation through the troposphere |
Author(s): Wang, BF (Wang Bao-feng); Luo, XJ (Luo Xiu-juan); Zhang, Y (Zhang Yu); Zeng, ZH (Zeng Zhi-hong); Wang, F (Wang Feng) |
Edited by: Amzajerdian F; Aksnes A; Chen W; Gao C; Zheng Y; Wang C |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER SENSING AND IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8905 Article Number: 89050D DOI: 10.1117/12.2032170 Published: 2013 |
Abstract: Understanding and predicting laser beam propagation effects in the atmosphere is important for laser applications. Turbulence effects cause beam wander, beam broadening, intensity scintillations, which reducing the power in bucket and the tracking accuracy, etc. In this work, the phase screens are used to model atmosphere turbulence in the model of the laser propagation through troposphere. And according to the characteristics of the troposphere, a layered model is used. Laser propagation follows the Huygens-Fresnel principle between phase screens. Simulations with different grid point numbers were constructed, and numerical experiments were conducted. According to the simulated results including Strehl ratio, sharpness, and amplitude distribution, preceding phase screens have effect on the total energy of the receiving surface, but have little impact on amplitude distribution. And the phase screens, which are close to the receiving surface, have a significant impact on both amplitude distribution and the total receiving energy. The results suggests that in simulation one should increase grid point numbers as many as possible and needs to pay particular attention to parameters of the phase screens near the receiving surface in simulation. |
Accession Number: WOS:000326651200013 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging - Laser Sensing and Imaging and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9774-1 |
Record 59 of 103 | |||||||||
Title: Solid-state ultrafast all-optical x-ray imaging sensor enabling picosecond temporal resolution | |||||||||
Author(s): Wang, B (Wang, Bo); Bai, YL (Bai, Yonglin); Xu, P (Xu, Peng); Liu, BY (Liu, Baiyu); Zhu, BL (Zhu, Bingli); Yang, WZ (Yang, Wenzheng); Bai, XH (Bai, Xiaohong); Qin, JJ (Qin, Junjun); Gou, YS (Gou, Yongsheng) | |||||||||
Edited by: Ohta J; Wu N; Li B | |||||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 Article Number: 89082C DOI: 10.1117/12.2034893 Published: 2013 | |||||||||
Abstract: Here we report an ultrafast x-ray imaging sensor based on optical measurement of the effects of x-ray absorption and electron hole pair creation in a direct band-gap semiconductor. Our results indicate that this technology can be used to provide a new approach for x-ray detectors and x-ray imaging systems with picosecond temporal resolution at x-ray energies similar to 10 keV. The x-ray absorption in GaAs produces a transient, non-equilibrium, electron-hole pair distribution which is then sensed by the phase modulation of the optical probe beam. The basic physics of the detector, implementation considerations, and preliminary experimental data are presented and discussed. Through further development, this x-ray imaging sensor could provide insight into previously unmeasurable phenomena in many fields. | |||||||||
Accession Number: WOS:000325484000083 | |||||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | |||||||||
Conference Date: JUN 25-27, 2013 | |||||||||
Conference Location: Beijing, PEOPLES R CHINA | |||||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | |||||||||
Author Identifiers: | |||||||||
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ISSN: 0277-786X | |||||||||
eISSN: 1996-756X | |||||||||
ISBN: 978-0-8194-9777-2 |
Record 60 of 103 | ||||||
Title: Improved design of support for large aperture space lightweight mirror | ||||||
Author(s): Wang, C (Wang, Chao); Ruan, P (Ruan, Ping); Liu, QM (Liu, Qimin) | ||||||
Edited by: Ohta J; Wu N; Li B | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 Article Number: 89081P DOI: 10.1117/12.2034456 Published: 2013 | ||||||
Abstract: In order to design a kind of rational large aperture space mirror which can adapt to the space gravity and thermal environment, by taking the choice of material, the lightweight of the mirror and the design of support into account in detail, a double-deck structure with traditional flexible hinge was designed, then the analytical mathematical model of the mirror system was established. The design adopts six supports on back. in order to avoid the constraints, mirror is connected to three middle transition pieces through six flexible hinges, and then the three transition pieces are connected to support plate through another three flexible hinges. However, the initial structure is unable to reach the expected design target and needs to be made further adjustments. | ||||||
Accession Number: WOS:000325484000060 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9777-2 |
Record 61 of 103 |
Title: Field-programmable gate array-based hardware architecture for high-speed camera with KAI-0340 CCD image sensor |
Author(s): Wang, H (Wang Hao); Yan, S (Yan Su); Zhou, ZF (Zhou Zuofeng); Cao, JZ (Cao Jianzhong); Yan, AQ (Yan Aqi); Tang, LNA (Tang Liniao); Lei, YJ (Lei Yangjie) |
Edited by: Ohta J; Wu N; Li B |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 Article Number: 890811 DOI: 10.1117/12.2033013 Published: 2013 |
Abstract: We present a field-programmable gate array (FPGA)-based hardware architecture for high-speed camera which have fast auto-exposure control and colour filter array (CFA) demosaicing. The proposed hardware architecture includes the design of charge coupled devices (CCD) drive circuits, image processing circuits, and power supply circuits. CCD drive circuits transfer the TTL (Transistor-Transistor-Logic) level timing Sequences which is produced by image processing circuits to the timing Sequences under which CCD image sensor can output analog image signals. Image processing circuits convert the analog signals to digital signals which is processing subsequently, and the TTL timing, auto-exposure control, CFA demosaicing, and gamma correction is accomplished in this module. Power supply circuits provide the power for the whole system, which is very important for image quality. Power noises effect image quality directly, and we reduce power noises by hardware way, which is very effective. In this system, the CCD is KAI-0340 which is can output 210 full resolution frame-per-second, and our camera can work outstandingly in this mode. The speed of traditional auto-exposure control algorithms to reach a proper exposure level is so slow that it is necessary to develop a fast auto-exposure control method. We present a new auto-exposure algorithm which is fit high-speed camera. Color demosaicing is critical for digital cameras, because it converts a Bayer sensor mosaic output to a full color image, which determines the output image quality of the camera. Complexity algorithm can acquire high quality but cannot implement in hardware. An low-complexity demosaicing method is presented which can implement in hardware and satisfy the demand of quality. The experiment results are given in this paper in last. |
Accession Number: WOS:000325484000036 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9777-2 |
Record 62 of 103 |
Title: An Adaptive Two-point Non-uniformity Correction Algorithm Based on Shutter And Its Implementation |
Author(s): Wang, HW (Wang Huawei); Ma, CW (Ma Caiwen); Cao, JZ (Cao Jianzhong); Zhang, HF (Zhang Haifeng) |
Book Group Author(s): IEEE |
Source: 2013 FIFTH INTERNATIONAL CONFERENCE ON MEASURING TECHNOLOGY AND MECHATRONICS AUTOMATION (ICMTMA 2013) Book Series: International Conference on Measuring Technology and Mechatronics Automation Pages: 174-177 DOI: 10.1109/ICMTMA.2013.51 Published: 2013 |
Abstract: Because of the non-uniform response of infrared focal plane arrays (IRFPA), non-uniformity correction is a key technology in IRFPA application. The two-point correction algorithm is widely used in practical applications, but there are some disadvantages. The detector's response will drift with time and temperature, correction parameters will drift with this accordingly. In order to acquire good quality images, the correction parameters need to be recalibrated periodically. It is inconvenient for user. This paper proposed an adaptive non-uniformity correction algorithm based on the two-point correction, which can update the correction parameters automatically. And this paper else introduced the approach of the algorithm. Results showed that the algorithm is effective to compensate the response drift influenced by time and temperature. |
Accession Number: WOS:000320989700041 |
Conference Title: 5th International Conference on Measuring Technology and Mechatronics Automation (ICMTMA) |
Conference Date: JAN 16-17, 2013 |
Conference Location: Hong Kong, PEOPLES R CHINA |
Conference Sponsors: Cent S Univ, Harbin Engn Univ |
ISSN: 2157-1473 |
ISBN: 978-0-7695-4932-3 |
Record 63 of 103 |
Title: The accuracy analysis of the intersection measurement on the moving ships |
Author(s): Wang, M (Wang, Miao); Shan, QS (Shan, Qiu-sha); Liu, K (Liu, Kai) |
Edited by: Ye S; Fei Y |
Source: SIXTH INTERNATIONAL SYMPOSIUM ON PRECISION MECHANICAL MEASUREMENTS Book Series: Proceedings of SPIE Volume: 8916 Article Number: 891643 DOI: 10.1117/12.2035540 Published: 2013 |
Abstract: Based on the principle of the intersection measurement, the mathematical model of measuring the position and dimension of the moving ships was established, and the formula of the metrical accuracy was deduced. The Matlab software was utilized to simulate and emulate the metrical accuracy, and analysed the primary errors of the system measurement accuracy; the measurement model is validated, combined with the examination. The result indicated that the method is feasible which utilized the measurement principle to measure the position and dimension of the moving ships, and establish the basical for further project application. |
Accession Number: WOS:000333050600144 |
Conference Title: 6th International Symposium on Precision Mechanical Measurements (ISPMM) |
Conference Date: AUG 08-12, 2013 |
Conference Location: Guiyang, PEOPLES R CHINA |
Conference Sponsors: Hefei Univ Technol, Beijing Informat Sci & Technol Univ, Guiyang Xintian Oetech Co Ltd, Zhejiang Sci Tech Univ, Harbin Inst Technol, Int Comm Measurements & Instrumentat, Natl Nat Sci Fdn China, China Instrument & Control Soc |
ISSN: 0277-786X |
ISBN: 978-0-8194-9792-5 |
Record 64 of 103 |
Title: A Multi-exposure Image Fusion Method Based on Wavelet Packet Transform |
Author(s): Wang, Q (Wang, Qi); Song, ZX (Song, Zongxi); Gao, W (Gao, Wei) |
Edited by: Gong H; Shi Z; Chen Q; Lu J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89070X DOI: 10.1117/12.2031837 Published: 2013 |
Abstract: This paper presents a method for multi-exposure images fusion based on wavelet packet transform, combining the local energy distributions of multi-exposure images with the edge detection. After decomposing two images involved in fusion into sub images in low-frequency and high-frequency with wavelet packet transform, we use different methods for low-frequency and high-frequency to obtain fusion coefficients. In low frequency processing, the method that threshold value is set for local energy is used while the edge detection method is used in high frequency, where the edge detection operator help compute the information quantity of different high frequency images. Then the coefficients for fusion are selected according to different strategies adopted for low-and high-frequency. Finally, the fusion image is reconstructed through inverse wavelet packet transform. The result shows that the fusion method is effective and the fusion image can preserve the details of the each input image successfully. |
Accession Number: WOS:000325423700030 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9776-5 |
Record 65 of 103 |
Title: Effect of the Fringe Visibility on Spectrum SNR of Fourier Transform Imaging Spectrometer |
Author(s): Wang, S (Wang, Shuang); Bin, XL (Bin Xangli); Jing, JJ (Jing, Juanjuan); Pi, HF (Pi, Haifeng) |
Edited by: Zhang L; Yang J |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SPECTROMETER TECHNOLOGIES AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8910 Article Number: 89100W DOI: 10.1117/12.2032912 Published: 2013 |
Abstract: The principle of Fourier transform spectrometer is based on the relationship of Fourier-Transform between interferogram and spectrum. The spectral information of Fourier transform imaging spectrometer (FTIS) reconstructed from raw interferogram by data processing. So there are two kinds of signal-to-noise ratio (SNR) to evaluate instrument performance, one regarding interferogram and the other regarding reconstructed spectrum. Because the raw interferogram is intuitive, the interferogram SNR is studied usually. On the contrary, the spectrum SNR is studied less because of the complexity of the data processing from interferogram to spectrum. The research about the effect of the interference fringe visibility on the spectrum SNR is especially few. This paper present a research work on the relations between the interference fringe visibility and the spectrum SNR. Firstly, the reduction of fringe visibility caused by imaging lens defocus was analyzed. Secondly, the changes of the average spectrum signal and noise caused by the reduction of fringe visibility were calculated. For average spectrum signal, the math deductions are done base on Fourier transform theory. The average noise with different input signal optic-electrons number are simulated. the results show that the average spectrum signal is directly proportional to the fringe visibility, and the effect of fringe visibility on the noise related to signal can be ignorable. Finally, In order to demonstrate above results, the imaging experiment was done with white-light source, using LASIS (Large aperture static imaging spectrometer) based on Sagnac Interferometer. The average spectrum SNRs under different fringe visibility are calculated and analyzed. The experimental results show that: the average spectrum SNRs increase from 42.7 to 62.4. along with the fringe visibility increasing from 0.5051 to 0.687. the reconstructed spectrum SNR is directly proportional to the fringe visibility. As a result, the interferogram fringe visibility can be used to estimate the reconstructed spectrum SNR, and evaluate the performance of FTIS before data processing. |
Accession Number: WOS:000325485500031 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Spectrometer Technologies and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9779-6 |
Record 66 of 103 | ||||||
Title: A new primary mirror based on topology optimization | ||||||
Author(s): Wang, X (Wang Xin); Wang, W (Wang Wei) | ||||||
Edited by: Ohta J; Wu N; Li B | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 DOI: 10.1117/12.2032227 Published: 2013 | ||||||
Abstract: The impact of the mirror self-weight or other structural stress may cause bad optical imaging quality. The large-diameter primary mirror was optimized based on variable density topology optimization method and in the condition of gravity to satisfy the design requirements. A new primary mirror has been designed, comparing which with the traditional lightweight primary mirror in the method of finite element analysis, the results prove that the new primary mirror is superior to the traditional model in the lightweight rate, surface accuracy and structural rigidity, so the paper puts forward a new idea in the lightweight design. | ||||||
Accession Number: WOS:000325484000012 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9777-2 |
Record 67 of 103 |
Title: Study on Adaptive Modulation Used in Fading Channels |
Author(s): Wang, X (Wang, Xin); Gao, W (Gao, Wei); Song, ZX (Song, Zongxi) |
Edited by: KIm YH; Yarlagadda P |
Source: SENSORS, MEASUREMENT AND INTELLIGENT MATERIALS, PTS 1-4 Book Series: Applied Mechanics and Materials Volume: 303-306 Pages: 2068-+ DOI: 10.4028/www.scientific.net/AMM.303-306.2068 Published: 2013 |
Abstract: Most of traditional modulation and coding techniques do not adapt to fading or nonlinear conditions. These non-adaptive methods require a fix-link margin to maintain acceptable performance when the channel quality is poor. Thus, these systems are effectively designed for the worst-case channel conditions, resulting in insufficient utilization of the full channel capacity. Adapting to signal fading allows the channel to be used more efficiently since the power rate can be adjusted to take advantage of favorable channel conditions. In this paper, we present a simplified mathematical model to calculate the probability of SER for any given constellation of M-QAM. This model plays an important role in designing spectrally efficient adaptive modulation over nonlinear mobile channels. Instantaneous spectral efficiency and its histogram distribution are found for linear and nonlinear channel cases. |
Accession Number: WOS:000320625501117 |
Conference Title: International Conference on Sensors, Measurement and Intelligent Materials (ICSMIM 2012) |
Conference Date: DEC 26-27, 2012 |
Conference Location: Guilin, PEOPLES R CHINA |
Conference Sponsors: Korea Maritime Univ, Univ Nottingham, Queensland Univ Technol |
ISSN: 1660-9336 |
ISBN: 978-3-03785-652-9 |
Record 68 of 103 | ||||||
Title: A novel compensation fiber coil for eliminating Sagnac Effect in fiber optic current sensor | ||||||
Author(s): Wang, YL (Wang Yingli); Kang, MH (Kang Menghua); Ren, LY (Ren Liyong); Ren, KL (Ren Kaili); Xu, JT (Xu Jintao); Shi, NB (Shi Nianbao) | ||||||
Book Group Author(s): IEEE | ||||||
Source: 2013 32ND CHINESE CONTROL CONFERENCE (CCC) Book Series: Chinese Control Conference Pages: 7473-7476 Published: 2013 | ||||||
Abstract: In Sagnac interferometer fiber optics current sensor, errors from the residual linear birefringence and environmental temperature and vibration sensitity has severely influenced on accuracy of this sensor. Spun highly linearly birefringent fiber has intrinsic sensitivity to magnetic fields through the Faraday Effect which result in simplification of optical element. The absence of the quarter wave plate result in good temperature performance and reducing light loss for less splice points. In this manuscript, the spun highly linearly birefringent fiber was designed and the vibration insensitive Sagnac interferometer fiber optics current sensor (S-FOCS) scheme was set up. In this scheme, the compensation fiber coil was designed to compensate the error caused by Sagnac effect in sensing fiber coil. Therefore, it is vibration immunity Sagnac interferometer fiber optics current sensor. The theoretical modeling of the state of light polarization was built by Jones Matrix. The results demonstrated that this novel sensor have good performance of conductor position insensitivity, temperature stability and vibration immunity. | ||||||
Accession Number: WOS:000393046007116 | ||||||
Conference Title: 32nd Chinese Control Conference (CCC) | ||||||
Conference Date: JUL 26-28, 2013 | ||||||
Conference Location: Xian, PEOPLES R CHINA | ||||||
Conference Sponsors: Syst Engn Soc China, NW Polytechn Univ, Chinese Assoc Automat, Tech Comm Control Theory, Chinese Acad Sci, Acad Math & Syst Sci, China Soc Ind & Appl Math, Xian Jiaotong Univ, Xian Univ Technol, IEEE Control Syst Soc, Soc Instrument & Control Engineers Japan, Inst Control Robot & Syst Korea | ||||||
Author Identifiers: | ||||||
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ISSN: 2161-2927 |
Record 69 of 103 | ||||||
Title: Algorithm of Semicircular Laser Spot Detection Based on Circle Fitting | ||||||
Author(s): Wang, ZZ (Wang, Zhengzhou); Xu, RH (Xu, Ruihua); Hu, BL (Hu, Bingliang) | ||||||
Edited by: Wang Y; Yi X | ||||||
Source: FIFTH INTERNATIONAL CONFERENCE ON DIGITAL IMAGE PROCESSING (ICDIP 2013) Book Series: Proceedings of SPIE Volume: 8878 Article Number: 88782Z DOI: 10.1117/12.2030791 Published: 2013 | ||||||
Abstract: In order to obtain the exact center of an asymmetrical and semicircular aperture laser spot, a method for laser spot detection method based on circle fitting was proposed in this paper, threshold of laser spot image was segmented by the method of gray morphology algorithm, rough edge of laser spot was detected in both vertical and horizontal direction, short arcs and isolated edge points were deleted by contour growing, the best circle contour was obtained by iterative fitting and the final standard round was fitted in the end. The experimental results show that the precision of the method is obviously better than the gravity model method being used in the traditional large laser automatic alignment system. The accuracy of the method to achieve asymmetrical and semicircular laser spot center meets the requirements of the system. | ||||||
Accession Number: WOS:000328500600107 | ||||||
Conference Title: 5th International Conference on Digital Image Processing (ICDIP) | ||||||
Conference Date: APR 21-22, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Int Assoc Comp Sci & Informat Technol, Chinese Acad Sci | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9305-7 |
Record 70 of 103 | |||||||||
Title: The influence of atmospheric turbulence on IM/DD space optical communication system | |||||||||
Author(s): Wei, AH (Wei Anhai); Han, B (Han Biao); Zhao, W (Zhao Wei); Xie, XP (Xie Xiaoping); Hu, H (Hu Hui); Su, YL (Su Yulong); Zhang, KW (Zhang Kewei) | |||||||||
Edited by: Wilson KE; Ma J; Liu L; Jiang H; Ke X | |||||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER COMMUNICATION TECHNOLOGIES AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8906 Article Number: 890610 DOI: 10.1117/12.2033028 Published: 2013 | |||||||||
Abstract: Lots of researches have simulated performance of optical system based on plane wave or spherical wave model, but optical field is Gauss distribution in real optical communication system. So we derive the relationships between the signal-to-noise ratio (SNR), bit error rate (BER), channel capacity (C) and the transmission distance of the space laser communication system, which is obtained by the Gaussian beam propagation model for on-off keying (OOK) modulated signal under horizontal link. We numerically study the influence of atmospheric turbulence on system performance. we get the conclusions: Under weak turbulence intensity, as the turbulence intensity increases, the C and SNR for OOK modulated space laser communication system decrease while the BER increase; In the case of strong turbulence intensity, the intensity scintillation and the BER dramatically increase with the increase of transmission distance, and then become saturated; In the condition of turbulence intensity and transmission distance are both constant, the longer the wavelength results in greater C, higher SNR and lower BER. Selecting longer communication wavelength can mitigate the impact of the atmosphere turbulence on the communication system in some extent. | |||||||||
Accession Number: WOS:000325462400035 | |||||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Laser Communication Technologies and Systems | |||||||||
Conference Date: JUN 25-27, 2013 | |||||||||
Conference Location: Beijing, PEOPLES R CHINA | |||||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | |||||||||
Author Identifiers: | |||||||||
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ISSN: 0277-786X | |||||||||
eISSN: 1996-756X | |||||||||
ISBN: 978-0-8194-9775-8 |
Record 71 of 103 |
Title: Pulse contrast measurement of femtosecond lasers using chalcohalide glass |
Author(s): Wu, DK (Wu, Dengke); He, JF (He, Junfang); Guo, HT (Guo, Haitao); Zhu, CJ (Zhu, Changjun); Wang, YS (Wang, Yishan); Zhao, W (Zhao, Wei) |
Edited by: Kaierle S; Liu J; Cao J |
Source: 2ND INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER (LIMIS 2012) Book Series: Proceedings of SPIE Volume: 8796 Article Number: 87962F DOI: 10.1117/12.2011984 Published: 2013 |
Abstract: A chalcogenide glass was used for an optical Kerr gate to sampling pulse contrast of femtosecond lasers with low repetition rate (40 Hz). The dynamic range of this method reached 10(3), with a scanning range of 150ps and temporal sampling rate of 6.3 fs. The advantage of this method lies in its broad spectrum range including visible and NIR spectral region and easy operation. |
Accession Number: WOS:000323339600087 |
Conference Title: 2nd International Symposium on Laser Interaction with Matter (LIMIS) |
Conference Date: SEP 09-12, 2012 |
Conference Location: Xian, PEOPLES R CHINA |
Conference Sponsors: State Key Lab Laser Interact Matter, CIOMP, Publicat Dept, NW Inst Nucl Technol, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Chinese Opt Soc, European Laser Inst, Opt Soc, Shaanxi Opt Soc, Japan Soc Promot Sci |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9639-3 |
Record 72 of 103 |
Title: Sub-pixel Location with Phase Transfer Function for Star Tracker |
Author(s): Xi, JB (Xi, Jiangbo); Song, ZX (Song, Zongxi); Gao, W (Gao, Wei) |
Edited by: Tan J; Wen X |
Source: EIGHTH INTERNATIONAL SYMPOSIUM ON PRECISION ENGINEERING MEASUREMENTS AND INSTRUMENTATION Book Series: Proceedings of SPIE Volume: 8759 Article Number: 87590U DOI: 10.1117/12.2015091 Published: 2013 |
Abstract: Star tracker has been widely used as a precise and reliable device for the attitude measuring of a spacecraft. The accuracy of star location will affect the accuracy of star identification and finally the accuracy of attitude measurement. This paper proposed a novel method to locate the star position with the phase transfer function (PTF). The numerical expressions are deduced with the diffraction model of the star point in 1-D and given directly in 2-D. Then calculation is performed and the accuracy is better than 2.1% pixels (SNR=20) with a 3x3 window of airy disk, which is higher than the traditional centroid method. Different sizes of the airy disk from 3 to 6 are simulated with PTF method and we find that the optimal window size is 3 to 5. Finally the Additive Gaussian Noise with SNR from 2 to 40 is introduced to evaluate the novel method and compare it with the traditional centroid method. The accuracy of the new method can reach better than 2.5% pixels and it is much robust than the traditional centroid method, which proves that the method we proposed has a good performance under the noise environment. |
Accession Number: WOS:000319906800029 |
Conference Title: 8th International Symposium on Precision Engineering Measurements and Instrumentation (ISPEMI) |
Conference Date: AUG 08-11, 2012 |
Conference Location: Chengdu, PEOPLES R CHINA |
Conference Sponsors: Int Comm Measurements & Instrumentat, Natl Nat Sci Fdn China (NSFC), Chinese Soc Measurement (CSM), China Instrument & Control Soc, CSM, Instrumentat Comm, Harbin Inst Technol |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9550-1 |
Record 73 of 103 | ||||||
Title: INDUCED CURRENT MEASUREMENT IN BRIDGEWIRE EED THROUGH INFRARED OPTICAL FIBER IMAGE BUNDLE | ||||||
Author(s): Xin, LW (Xin, Liwei); Wang, T (Wang, Tao); Tian, JS (Tian, Jinshou); Yin, F (Yin, Fei); Hu, YN (Hu, Yanan); Song, ZY (Song, Zhenyu); Yang, J (Yang, Jin); Yin, JZ (Yin, Jingzhi) | ||||||
Edited by: Amzajerdian F; Aksnes A; Chen W; Gao C; Zheng Y; Wang C | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER SENSING AND IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8905 Article Number: 890518 DOI: 10.1117/12.2033704 Published: 2013 | ||||||
Abstract: While bridgewire electroexplosive device ( EED) works in electromagnetic environment, conventional methods can introduce electromagnetism interference. A new method of measuring the induced current in EED is proposed in this article. It bases on infrared imagingto detect the inducting current from long distance and non-contact. The infrared optical fiber image bundle coupling with infrared CCD detector is used to detect the infrared images. At first, the thermal field images are acquired by infrared CCD detector. Then the value of weak induced current of corresponding bridgewire is further determined according to the relations of gray scale values and temperature, temperature and current. The experiment results show that bridgewire current is accurately measured by this method. This method offers a new way to evaluate electromagnetic effect of EED. | ||||||
Accession Number: WOS:000326651200043 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging - Laser Sensing and Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9774-1 |
Record 74 of 103 | ||||||
Title: Design of compact apochromatic lens with very-broad spectrum and high resolution | ||||||
Author(s): Yan, A (Yan Aqi); Cao, JZ (Cao Jianzhong); Zhang, J (Zhang Jian); Zhang, Z (Zhang Zhi); Wang, H (Wang Hao); Wu, DS (Wu Dengshan); Zuofeng, F (Zhou Zuofeng); Zhang, KS (Zhang Kaisheng); Lei, YJ (Lei Yangjie) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89070A DOI: 10.1117/12.2030546 Published: 2013 | ||||||
Abstract: This paper designs a compact apochromatic lens with long focal length, which operates over very-broad spectrum from 400nm to 900nm for high resolution image application. The focal length is 290mm, and F-number is 4.5. In order to match CCD sensor, lens resolution must be higher than 100lp/mm. It is a significant challenge to correct secondary spectrum over very-broad spectrum for this application. The paper firstly pays much attention on dispersion characteristic of optical materials over this very-broad spectrum, and dispersion characteristic of glasses is analyzed. After properly glasses combinations and optimal lens structure selected, this compact apochromatic lens is designed. The lens described in this paper comprises fewer lenses, most of them are ordinary optical materials, and only one special flint type TF3 with anomalous dispersion properties is used for secondary spectrum correction. Finally, the paper shows MTF and aberration curve for performance evaluation. It can be seen that MTF of the designed lens nearly reach diffraction limit at Nyquist frequency 100lp/mm, and residual secondary spectrum is greatly reduced to less than 0.03mm (in the lines 550nm and 787.5nm). The overall length of this compact apochromatic lens is just 0.76 times its focal length, and because of fewer lenses and ordinary optical materials widely used, production cost is also greatly reduced. | ||||||
Accession Number: WOS:000325423700010 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 75 of 103 |
Title: Optimal design of a new type space laser communication optical system |
Author(s): Yan, PP (Yan Pei-pei); Deng, XG (Deng Xiao-guo); Zhang, HJ (Zhang Heng-jin) |
Edited by: Wilson KE; Ma J; Liu L; Jiang H; Ke X |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER COMMUNICATION TECHNOLOGIES AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8906 Article Number: 890602 DOI: 10.1117/12.2030551 Published: 2013 |
Abstract: A design of a laser communications optical system with high transmitting and receiving performance is given. The traditional on-axis Cassegrain optical antenna has the default that the transmitting and receiving power decreased greatly because of the obscuration of the secondary mirror. Considering that the eccentric-pupil Cassegrain optical antenna is designed. The optical antenna system in transceiver has been designed by means of CODEV software. It improves the efficiency of transmitting and receiving power effectively. Its properties have been analyzed, such as gain, image quality, and transmission efficiency. Meanwhile, the materials of optical elements have been analyzed. The power decline curve has been obtained by means of the detailed analysis of antenna system in partial axis situation. The system includes transmitter channel, receiving channel and experiment channel. It can realize the functions of transmitter-receiver isolation and multi-light ways using dichroic mirrors and beam splitting prisms. The system volume and weight are reduced greatly. The complexity of conventional laser communication system is reduced enormously at the same time. It has important reference significance and application value. |
Accession Number: WOS:000325462400002 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Laser Communication Technologies and Systems |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9775-8 |
Record 76 of 103 | ||||||||||||||||||
Title: The Design of Optomechanical for Bear Severe Mechanics Environment | ||||||||||||||||||
Author(s): Yang, HT (Yang, Hongtao); Fan, ZY (Fan, Zheyuan); Chen, WN (Chen, Weining); Zhang, ZH (Zhang, Zhaohui); Zhang, J (Zhang, Jian); Zhang, Z (Zhang, Zhi) | ||||||||||||||||||
Edited by: Fu Y | ||||||||||||||||||
Source: ADVANCES IN OPTICS MANUFACTURE Book Series: Key Engineering Materials Volume: 552 Pages: 52-56 DOI: 10.4028/www.scientific.net/KEM.552.52 Published: 2013 | ||||||||||||||||||
Abstract: Optical lenses act as the important methods for acquire the image information is applied increasingly board,In accordance with the application environment that require content the precision and the force environment adaptation yet more power, so it is necessary that research on the adaption ability to the big level vibration and shock. In order to stand the bitter force environment put to use the centering assembly technology to ensure the image quality of the optical system. Design the different damping coefficient rubber-bearing isolation that assimilate the big level shock energy. At first, by the Pro/e software establish the three-dimensional model and use the ANSYS software simulate and analysis the result of the design. We want to apple the Sigfit software to simulate the effect that the vibration and shock affect on the MTF of the optical system. After optimize the design theory so as to attain the optimized result. By the experiment test the lenses about the accommodate ability, the result which can meet the shock of 5000g and 20g random vibration, camera can work effectively. This kind of design technology is mature and reliable and live through the examination under all kinds of environment, this design method is provided the reference for the design and development of optical mechanism production. | ||||||||||||||||||
Accession Number: WOS:000322090100009 | ||||||||||||||||||
Conference Title: 3rd Asia Pacific Conference on Optics Manufacture (APCOM 2012) | ||||||||||||||||||
Conference Date: AUG 26-28, 2012 | ||||||||||||||||||
Conference Location: Changchun, PEOPLES R CHINA | ||||||||||||||||||
Conference Sponsors: Changchun Univ Sci & Technol, Hong Kong Polytechn Univ, Adv Opt Mfg Ctr, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Jilin Univ, Natl Univ Defense Technol, Sci & Technol Low Light Level Night Vision Lab, Natl Key Lab High Power Semicond Laser, Info Tek Informat Sci & Technol Co Inc, Chinese Opt Soc, Opt Soc Amer, Chinese Soc Astronaut, Profess Assoc Photoelectron Technol | ||||||||||||||||||
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ISSN: 1013-9826 |
Record 77 of 103 |
Title: Improved design of a pseudo-cassegrain optical system |
Author(s): Yang, HL (Yang, Huanli); Chen, RL (Chen, Rongli); Liu, K (Liu, Kai); Lei, GZ (Lei, Guangzhi) |
Edited by: Ohta J; Wu N; Li B |
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 Article Number: 89081R DOI: 10.1117/12.2034464 Published: 2013 |
Abstract: This paper uses a pseudo-cassegrain system as the initial structure, whose full field of view and F number are 5.6 degrees and 1.63, respectively. Then the authors make further improvements and optimization in large weights and serious central obscuration. The final system is designed with preference of smaller central obscuration, lower manufacturing difficulty, lighter, simpler configuration and lower cost compared with the initial pseudo-cassegrain optical system. In addition, what is different from the previous modified cassegrain system is that secondary mirror of the final system is a plane mirror which is easier to fabricate and install. At the same time, the final system has three significant characteristics of these three systems: cassegrain, maksutov and schmidt. At last, the dissertation certificates the feasibility of the new system in the angle of aberration analysis, spot diagram analysis and energy analysis. It also provides a new design method for the optical system of moderate field, large relative aperture and wide spectral. |
Accession Number: WOS:000325484000062 |
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications |
Conference Date: JUN 25-27, 2013 |
Conference Location: Beijing, PEOPLES R CHINA |
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9777-2 |
Record 78 of 103 |
Title: A New Method of Processing High-precision Micro-hole with The Femtosecond Laser |
Author(s): Yang, XJ (Yang, Xiaojun); Li, M (Li, Ming); Wang, L (Wang, Li); Zhao, HL (Zhao, Hualong); Cheng, GH (Cheng, Guagnhua) |
Edited by: Liu H; Yang Y; Shen S; Zhong Z; Zheng L; Feng P |
Source: MATERIALS, MECHANICAL ENGINEERING AND MANUFACTURE, PTS 1-3 Book Series: Applied Mechanics and Materials Volume: 268-270 Pages: 382-+ DOI: 10.4028/www.scientific.net/AMM.268-270.382 Published: 2013 |
Abstract: Based on the femtosecond laser processing technology and PZT driving scanning technology, high-precision micro- manufacturing technology is developed. By adjusting the laser parameters and scanning parameters to get micro-hole machining on the flat or curved surface. Hole's size and surface morphology is observed by using phase contrast microscopy and scanning electron microscopy observations, and the surface roughness is analyzed by the surface profile instrument. The feasibility of diesel injector nozzle processing is verified in practical industry applications. The results show that this method of making micro hole has significant advantages, such as high precision, good consistency, without burrs, good surface roughness and high efficiency. These characteristics can meet the practical application requirements and can be used in various industrial fields. |
Accession Number: WOS:000320476800081 |
Conference Title: 2nd International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2012) |
Conference Date: NOV 17-18, 2012 |
Conference Location: Changsha, PEOPLES R CHINA |
Conference Sponsors: Hunan Prov Text Engn Ctr |
ISSN: 1660-9336 |
ISBN: 978-3-03785-579-9 |
Record 79 of 103 | |||||||||
Title: Two-Photon Fluorescence Stereomicroscopy with Bessel Beams | |||||||||
Author(s): Yang, YL (Yang, Yanlong); Lei, M (Lei, Ming); Zheng, JJ (Zheng, Juanjuan); Li, RZ (Li, Runze); Yan, SH (Yan, Shaohui); Yao, BL (Yao, Baoli); Ye, T (Ye, Tong) | |||||||||
Edited by: Periasamy A; Konig K; So PTC | |||||||||
Source: MULTIPHOTON MICROSCOPY IN THE BIOMEDICAL SCIENCES XIII Book Series: Proceedings of SPIE Volume: 8588 Article Number: 85882K DOI: 10.1117/12.2002850 Published: 2013 | |||||||||
Abstract: Three dimensional distributions of cells can be usually acquired by optical sectioning methods, such as multiphoton excitation and confocal fluorescence laser scanning microscopy. Though the lateral scan rates can reach up to several kHz, the relatively slow axial scan comprises the speed of real-time imaging of a volume. Here we propose a three dimensional imaging method that uses Bessel beams as excitation in multiphoton fluorescence microscopy. The extended focus of the Bessel beam allows recording a volume of cells without scanning the depth. The depth information can be retrieved by recording a pair of parallax views of the same volume. We have demonstrated the stereoscope capability on a homebuilt two-photon fluorescence microscope. | |||||||||
Accession Number: WOS:000319872500054 | |||||||||
Conference Title: Conference on Multiphoton Microscopy in the Biomedical Sciences XIII | |||||||||
Conference Date: FEB 03-05, 2013 | |||||||||
Conference Location: San Francisco, CA | |||||||||
Conference Sponsors: SPIE, Becker & Hickel GmbH, Boston Elect Corp, Coherent, Inc, Intelligent Software Solut, Inc, JenLab GmbH, Newport Spectra Phys, Omega Opt, Inc, Princeton Instruments, Semrock, Inc, Carl Zeiss | |||||||||
Author Identifiers: | |||||||||
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ISSN: 0277-786X | |||||||||
eISSN: 1996-756X | |||||||||
ISBN: 978-0-8194-9357-6 |
Record 80 of 103 |
Title: Advanced Transient Thermoreflectance 2D Imaging for Integrated Circuit Sub-Micron Defect Detection and Thermal Analysis |
Author(s): Yazawa, K (Yazawa, Kazuaki); Kendig, D (Kendig, Dustin); Mang, Y (Mang, Yan); Yazawa, K (Yazawa, Kazuaki); Shakouri, A (Shakouri, Ali) |
Edited by: Wang M; Jiang Y; Zhao C; Huang W; Song X |
Source: PROCEEDINGS OF THE 2013 20TH IEEE INTERNATIONAL SYMPOSIUM ON THE PHYSICAL & FAILURE ANALYSIS OF INTEGRATED CIRCUITS (IPFA 2013) Pages: 127-131 Published: 2013 |
Abstract: Transient thermoreflectance 2D thermal imaging is rapidly proving to be an effective technique for meeting the thermal analysis challenges inherent with today's advanced high speed integrated circuits. Using near infrared light illumination is particularly suitable for the thermal imaging of flip chip mounted devices and silicon substrate chips. High speed transient imaging reveals the timing of heating the spots in the circuit to identify if it is designed or unintended heating. Time-dependent unusual thermal signals provide the information of the depth location of a failure by knowing the time delay underneath the opaque layers. |
Accession Number: WOS:000329045700023 |
Conference Title: 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA) |
Conference Date: JUL 15-19, 2013 |
Conference Location: Suzhou, PEOPLES R CHINA |
Conference Sponsors: IEEE, IEEE Nanjing Sect ED SSC Joint Chapter, IEEE Electron Devices Soc, IEEE Reliabil Soc, Soochow Univ, Suzhou New Dist Adm Comm, Suzhou Inst Elect, Xian Jiaotong Liverpool Univ, Elect Prod Reliabil & Environm Testing Res Inst, FEI Co, Digit Concept, Hanwa, WinTech |
ISBN: 978-1-4799-0480-8; 978-1-4799-1241-4 |
Record 81 of 103 |
Title: The application of carbon nanotubes in mode locked fiber laser |
Author(s): Yu, ZH (Yu, Zhenhua); Wang, YG (Wang, Yonggang); Song, YR (Song, Yanrong) |
Edited by: Friend J; Tan HH |
Source: MICRO/NANO MATERIALS, DEVICES, AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8923 Article Number: 89231F DOI: 10.1117/12.2036094 Published: 2013 |
Abstract: We demonstrate a mode locked fiber laser based on single wall carbon nanotubes. The mode locking is achieved by the evanescent field interaction of the propagating light with a single wall carbon nanotubes saturable absorber in a microfiber. The pulse width is 114fs. The maximum average output power is 21mW. The center of the wavelength is 1556nm with 26nm spectral width. The repetition rate is 111.6MHz. |
Accession Number: WOS:000333057400030 |
Conference Title: Conference on Micro/Nano Materials, Devices, and Systems |
Conference Date: DEC 09-11, 2013 |
Conference Location: Melbourne, AUSTRALIA |
Conference Sponsors: Australian Natl Fabricat Facil, Grey Innovat, Melbourne Ctr Nanofabricat, MicroNano Res Facil, RMIT Univ |
ISSN: 0277-786X |
eISSN: 1996-756X |
ISBN: 978-0-8194-9814-4 |
Record 82 of 103 | |||||||||
Title: Proposal on a single-shot correlator for measuring contrast ratio based on optical replication | |||||||||
Author(s): Yuan, SC (Yuan, Suochao); Gao, LM (Gao, Limin); Zhao, JN (Zhao, Juanning) | |||||||||
Edited by: Kaierle S; Liu J; Cao J | |||||||||
Source: 2ND INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER (LIMIS 2012) Book Series: Proceedings of SPIE Volume: 8796 Article Number: 879629 DOI: 10.1117/12.2006555 Published: 2013 | |||||||||
Abstract: We propose a new idea to measure the temporal contrast of laser pulses in this paper. Unlike the traditional time-to-space transformation method, the design in this paper can be called a somewhat time-to-time transformation. A single-shot pulse beam is simultaneously divided into two separate beams by a beam splitter. The two beams then enter a pair of optical replicators respectively to generate two pulse sequences that have equal time intervals respectively. The time interval of the two sequences alters by about 100fs that we can use one sequence to scan the other at a time resolution of 100fs through a nonlinear crystal. The time resolution depends on the altering of time interval and the time window depends on the pulse number of the sequence. This method can avoid the spatial modulation of the laser pulse. On the other side, the time resolution and time window are adjustable. It is also possible to measure the high contrast with a low-dynamic-range detector by attenuating the power of each pulse in the sequence respectively. | |||||||||
Accession Number: WOS:000323339600081 | |||||||||
Conference Title: 2nd International Symposium on Laser Interaction with Matter (LIMIS) | |||||||||
Conference Date: SEP 09-12, 2012 | |||||||||
Conference Location: Xian, PEOPLES R CHINA | |||||||||
Conference Sponsors: State Key Lab Laser Interact Matter, CIOMP, Publicat Dept, NW Inst Nucl Technol, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Chinese Opt Soc, European Laser Inst, Opt Soc, Shaanxi Opt Soc, Japan Soc Promot Sci | |||||||||
Author Identifiers: | |||||||||
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ISSN: 0277-786X | |||||||||
eISSN: 1996-756X | |||||||||
ISBN: 978-0-8194-9639-3 |
Record 83 of 103 | ||||||
Title: Mid-Infrared Fluorotellurite Glasses and Fibers | ||||||
Author(s): Zhan, H (Zhan, Huan); Zhang, AD (Zhang, Aidong); He, JL (He, Jianli); Zhou, ZG (Zhou, Zhiguang); Li, L (Li, Lu); Lin, AX (Lin, Aoxiang) | ||||||
Book Group Author(s): IEEE | ||||||
Source: 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) Book Series: Conference on Lasers and Electro-Optics Published: 2013 | ||||||
Abstract: We report on the fabrication and characterization of rare earth ions-doped water-free fluorotellurite glasses and fibers. For 2.8 mm glass fiber rods, its background loss was similar to 12 dB/m in the range of 2.5 similar to 4.2 mu m. | ||||||
Accession Number: WOS:000355262504046 | ||||||
Conference Title: Conference on Lasers and Electro-Optics (CLEO) | ||||||
Conference Date: JUN 09-14, 2013 | ||||||
Conference Location: San Jose, CA | ||||||
Author Identifiers: | ||||||
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ISSN: 2160-9020 | ||||||
ISBN: 978-1-55752-973-2 |
Record 84 of 103 |
Title: An 90 Degree Airborne Flex Camera System |
Author(s): Zhang, J (Zhang Jian); Yan, AQ (Yan Aqi); Wang, F (Wang Feng); Fan, ZY (Fan Zheyan); Chen, WN (Chen WeiNing); Zhang, Z (Zhang Zhi); Wu, DS (Wu Dengshan) |
Book Group Author(s): IEEE |
Source: 2013 IEEE INTERNATIONAL CONFERENCE OF IEEE REGION 10 (TENCON) Book Series: TENCON IEEE Region 10 Conference Proceedings Published: 2013 |
Abstract: It is necessary to obtain high-speed dynamic image at a certain position outside an aircraft cabin such that we can monitor the state of the aircraft and measure some parameters quantitatively. We have to flex optical axis for 90 degree at mounting position. To solve long distance optical path conveying, improve imaging quality, and realize clear image at centre and other areas, secondary image is adopted when we design optical system. With the purpose of adapting to vibration and high-speed wind load on the aircraft, we adopt anti-mechanics and anti-wind load design. Finally, we test and verify the design by simulation and experiment. |
Accession Number: WOS:000334921600203 |
Conference Title: IEEE International Conference of Region 10 (TENCON) |
Conference Date: OCT 22-25, 2013 |
Conference Location: Xian, PEOPLES R CHINA |
Conference Sponsors: IEEE Reg 10, IEEE Xian Sect, IEEE Hong Kong Sect, Natl Nat Sci Fdn China, NW Polytechn Univ, Xian Jiaotong Univ, Xidian Univ, Changan Univ, Innovat Grp Natl Nat Sci Fdn |
ISSN: 2159-3442 |
ISBN: 978-1-4799-2825-5; 978-1-4799-2827-9 |
Record 85 of 103 | |||||||||||||||||||||
Title: IMAGE SUPER-RESOLUTION VIA NON-LOCAL STEERING KERNEL REGRESSION REGULARIZATION | |||||||||||||||||||||
Author(s): Zhang, KB (Zhang, Kaibing); Gao, XB (Gao, Xinbo); Tao, DC (Tao, Dacheng); Li, XL (Li, Xuelong) | |||||||||||||||||||||
Book Group Author(s): IEEE | |||||||||||||||||||||
Source: 2013 20TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP 2013) Book Series: IEEE International Conference on Image Processing ICIP Pages: 943-946 Published: 2013 | |||||||||||||||||||||
Abstract: In this paper, we employ the non-local steering kernel regression to construct an effective regularization term for the single image super-resolution problem. The proposed method seamlessly integrates the properties of local structural regularity and non-local self-similarity existing in natural images, and solves a least squares minimization problem for obtaining the desired high-resolution image. Extensive experimental results on both simulated and real low-resolution images demonstrate that the proposed method can restore compelling results with sharp edges and fine textures. | |||||||||||||||||||||
Accession Number: WOS:000351597601011 | |||||||||||||||||||||
Conference Title: 20th IEEE International Conference on Image Processing (ICIP) | |||||||||||||||||||||
Conference Date: SEP 15-18, 2013 | |||||||||||||||||||||
Conference Location: Melbourne, AUSTRALIA | |||||||||||||||||||||
Conference Sponsors: Inst Elect & Elect Engineers, IEEE Signal Proc Soc | |||||||||||||||||||||
Author Identifiers: | |||||||||||||||||||||
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ISSN: 1522-4880 | |||||||||||||||||||||
ISBN: 978-1-4799-2341-0 |
Record 86 of 103 | ||||||
Title: Design of The Segmented Primary Optical Telescope | ||||||
Author(s): Zhang, KS (Zhang Kaisheng); Yan, AQ (Yan Aqi); Cao, JZ (Cao Jianzhong); Fan, ZY (Fan Zheyuan); Wu, L (Wu Li); Zhang, Z (Zhang Zhi); Zhu, Q (Zhu Qing) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89073O DOI: 10.1117/12.2034071 Published: 2013 | ||||||
Abstract: Following with the "high-resolution upsurge" appeared in many counties in recent few years, it is an inevitable trend to increase the size of the Optical Telescope. However, because of the volume constrains of space-borne astronomical instruments, segmented reflector is thought as the main measure of future astro-physical missions by many scientists. In this paper, a coaxial three-mirror anastigmatic system (TMA) with a segmented primary mirror is modeled in optical software. The optical system, which has 2.4m aperture, 48m focal length and the field-view angle of 0.3 degrees x0.06 degrees, works in the 450nm similar to 900nm wave band. The '1+6' aperture-stiching model is applied. Firstly, the initial structure of the system is inputted to the CODEV, and a certain constraint functions are set, and then the system automatically optimizes. Finally, designing results show that the Modulation Transfer Function (MTF) is really very near to the limit of diffraction. We get a good image quality of the optical system design results. | ||||||
Accession Number: WOS:000325423700117 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 87 of 103 | ||||||||||||
Title: Experimental research of optical preamplifier receiver for RZ-DPSK based on delay interferometer | ||||||||||||
Author(s): Zhang, KW (Zhang Ke-wei); Wang, W (Wang Wei); Zhao, W (Zhao Wei); Xie, XP (Xie Xiao-ping); Qian, FC (Qian Feng-chen) | ||||||||||||
Edited by: Wilson KE; Ma J; Liu L; Jiang H; Ke X | ||||||||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: LASER COMMUNICATION TECHNOLOGIES AND SYSTEMS Book Series: Proceedings of SPIE Volume: 8906 Article Number: 89060Q DOI: 10.1117/12.2032798 Published: 2013 | ||||||||||||
Abstract: We present simulation results for a 5 Gb/s optically pre-amplified, differential phase shift keying communication system achieving -48.1 dBm (about 24.7 photons/bit) receiver sensitivity at 10(-9) bit-error-rate and using an optical delay line interferometer made by ourselves with 1 bit delay as the demodulator. The system is also experimental tested and sensitivity of the receiver is -36.5 dBm (about 106.6 photons/bit). The experimental results have some penalty in sensitivity comparing to the results in the simulation because the 1 bit delay interferometer is sensitive to the environment such as temperature, tremble and so on. To our knowledge if the interferometer is well designed and optimized, the experimental results can correspond with the simulative results and an optically pre-amplified direct detection DPSK receiver with high sensitivity can be realized. | ||||||||||||
Accession Number: WOS:000325462400025 | ||||||||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Laser Communication Technologies and Systems | ||||||||||||
Conference Date: JUN 25-27, 2013 | ||||||||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||||||||
Author Identifiers: | ||||||||||||
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ISSN: 0277-786X | ||||||||||||
eISSN: 1996-756X | ||||||||||||
ISBN: 978-0-8194-9775-8 |
Record 88 of 103 | |||||||||||||||
Title: Slow Feature Analysis for Multi-Camera Activity Understanding | |||||||||||||||
Author(s): Zhang, L (Zhang, Lei); Lu, XQ (Lu, Xiaoqiang); Yuan, Y (Yuan, Yuan) | |||||||||||||||
Edited by: Zhang X; Zhou Z; Wang Q; Luo X | |||||||||||||||
Source: 2013 INTERNATIONAL CONFERENCE ON VIRTUAL REALITY AND VISUALIZATION (ICVRV 2013) Pages: 241-244 DOI: 10.1109/ICVRV.2013.46 Published: 2013 | |||||||||||||||
Abstract: Multi-camera activity analysis is a key point in video surveillance of many wide-area scenes, such as airports, underground stations, shopping mall and road junctions. On the basis of previous work, this paper presents a new feature learning method based on Slow Feature Analysis (SFA) to understand activities observed across the network of cameras. The main contribution of this paper can be summarized as follows: (1) It is the first time that SFA-based learning method is introduced to multi-camera activity understanding; (2) It presents an evaluation to examine the effectiveness of SFA-based method to facilitate the learning of inter-camera activity pattern dependencies; and (3) It estimates the sensitivity of learning inter-camera time delayed dependency given different training size, which is a critical factor for accurate dependency learning and has not been largely studied by existing work before. Experiments are carried out on a dataset obtained in a trident roadway. The results demonstrate that the SFA-based method outperforms the sate of the art. | |||||||||||||||
Accession Number: WOS:000330838000039 | |||||||||||||||
Conference Title: International Conference on Virtual Reality and Visualization (ICVRV) | |||||||||||||||
Conference Date: SEP 14-15, 2013 | |||||||||||||||
Conference Location: Xian, PEOPLES R CHINA | |||||||||||||||
Conference Sponsors: China Comp Federat, China Comp Federat, VR & Visualizat Comm, China Soc Image & Graph, VR Comm, China Syst Simulat Assoc, VR Comm, China Syst Simulat Assoc, Digital Entertainment Comm, IEEE Comp Soc, Transact Edutainment, NW Polytechn Univ, Sch Comp Sci & Engn, Shaanxi Prov Key Lab Signal & Image Informat Process, Beihang Univ, State Key Lab VR Technol & Syst, CAS, Inst Automat, Natl Lab Pattern Recognit | |||||||||||||||
Author Identifiers: | |||||||||||||||
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ISBN: 978-0-7695-5150-0 |
Record 89 of 103 | ||||||||||||||||||
Title: Mechanical Passive Compensation for Athermalisation Design of Infrared Optical System | ||||||||||||||||||
Author(s): Zhang, Z (Zhang, Zhi); Zhang, ZH (Zhang, Zhaohui); Fan, ZY (Fan, Zheyuan); Yan, A (Yan, Aqi); Zhang, J (Zhang, Jian); Yang, HT (Yang, Hongtao); Cao, JZ (Cao, Jianzhong) | ||||||||||||||||||
Edited by: Fu Y | ||||||||||||||||||
Source: ADVANCES IN OPTICS MANUFACTURE Book Series: Key Engineering Materials Volume: 552 Pages: 93-96 DOI: 10.4028/www.scientific.net/KEM.552.93 Published: 2013 | ||||||||||||||||||
Abstract: Optical equipments especially those for aerospace application are expected to work over a wide temperature range. The change of temperature could cause the refractive index change of infrared glass elements. Furthermore, it would lead to the defocus of the image surface and the performance degradation, so the method of temperature compensation must be adopted, which could make sure that optical system would adapt to the change of ambient temperature. A method of temperature compensation with mechanical passive compensation is briefly described, and an example is also given. The quality of image could be optimized through mechanical passive compensation,depending on the differences of metal and non-metallic thermal expansion coefficient. The results show that the optical system works stablely in the designed temperature range. It is of great importance to the athermalisation design of infrared optical system. | ||||||||||||||||||
Accession Number: WOS:000322090100016 | ||||||||||||||||||
Conference Title: 3rd Asia Pacific Conference on Optics Manufacture (APCOM 2012) | ||||||||||||||||||
Conference Date: AUG 26-28, 2012 | ||||||||||||||||||
Conference Location: Changchun, PEOPLES R CHINA | ||||||||||||||||||
Conference Sponsors: Changchun Univ Sci & Technol, Hong Kong Polytechn Univ, Adv Opt Mfg Ctr, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Jilin Univ, Natl Univ Defense Technol, Sci & Technol Low Light Level Night Vision Lab, Natl Key Lab High Power Semicond Laser, Info Tek Informat Sci & Technol Co Inc, Chinese Opt Soc, Opt Soc Amer, Chinese Soc Astronaut, Profess Assoc Photoelectron Technol | ||||||||||||||||||
Author Identifiers: | ||||||||||||||||||
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ISSN: 1013-9826 |
Record 90 of 103 | |||||||||
Title: Study on NNPID-based Adaptive Control for Electro-Optical Gyro Stabilized Platform | |||||||||
Author(s): Zhao, B (Zhao, Bing); Cao, JZ (Cao, Jianzhong); Yang, HT (Yang, Hongtao); Dong, XK (Dong, Xiaokun); Wang, JH (Wang, Jihong); Gong, ZD (Gong, Zhendong); Fan, XM (Fan, Xinming) | |||||||||
Book Group Author(s): IEEE | |||||||||
Source: PROCEEDINGS 2013 INTERNATIONAL CONFERENCE ON MECHATRONIC SCIENCES, ELECTRIC ENGINEERING AND COMPUTER (MEC) Pages: 348-352 Published: 2013 | |||||||||
Abstract: The working environment of airborne photo-electric stabilized platform is very atrocious and the platform is a time-varying system which has inherent nonlinearity. So we cannot obtain accurate mathematical model which makes it is difficult to obtain good control effects by traditional control method like conventional PID. Given the neural network's self-learning and selfadaptive characteristics which can adjust PID parameters automatically. This paper proposes a feed-forward neural network PID control method based on improved BP (Back Propagation) algorithm. The simulation results show that the improved algorithm can effectively solve the problems caused by classical PID control. Besides, the improved algorithm has very fast response speed, good real-time performance and less static-error. It can indeed meet the practical application requirements. | |||||||||
Accession Number: WOS:000366663000057 | |||||||||
Conference Title: International Conference on Mechatronic Sciences, Electric Engineering and Computer (MEC) | |||||||||
Conference Date: DEC 20-22, 2013 | |||||||||
Conference Location: Shenyang, PEOPLES R CHINA | |||||||||
Conference Sponsors: Shenyang Aerosp Univ | |||||||||
Author Identifiers: | |||||||||
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ISBN: 978-1-4799-2565-0 |
Record 91 of 103 | ||||||
Title: Infrared and Visible Image Fusion Based on Region Growing and Contourlet Transform | ||||||
Author(s): Zhao, BJ (Zhao, Bingjie); Gao, W (Gao, Wei); Song, ZX (Song, Zongxi) | ||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89070P DOI: 10.1117/12.2031627 Published: 2013 | ||||||
Abstract: According to the characteristics of infrared and visible images, a new image fusion method based on region growing and contourlet transform is proposed in this paper. To obtain more complementary information, the method is designed as a two-stage procedure. Firstly, the input infrared image is processed with region growing to segment the thermal target. Different fusion rules are adopted in target and background regions, respectively. For the target region, local energy is utilized as the fusion rule of the first fusion to fuse the thermal target and the visible image, while for the non-target region, we reserve the visible background information. Secondly, in order to fully add original information of the source images and avoid loss of information caused by segmentation, we make the second fusion between the visible image and the result image of the one-stage fusion. For good properties of localization, directionality and anisotropy, we adopt contourlet transform as the second fusion method. Experiments are carried out and the results show that our method is clearer in visual quality and effective in quantitative evaluations and the fused images are better than those resulting of using wavelet transform and contourlet transform. | ||||||
Accession Number: WOS:000325423700023 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9776-5 |
Record 92 of 103 | ||||||
Title: A deployable telescope imaging system with coilable tensegrity structure for microsatellite application | ||||||
Author(s): Zhao, C (Zhao, Chao); Li, C (Li, Chuang); Zhou, N (Zhou, Nan) | ||||||
Edited by: Ohta J; Wu N; Li B | ||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 Article Number: 89081B DOI: 10.1117/12.2033266 Published: 2013 | ||||||
Abstract: Microsatellites will be widely applied as an earth-observing platform in coming future for their low costs. Such satellite missions require optical payloads with low cost, low mass and small volume. In order to meet these requirements, one way is to develop deployable telescopes. They not only maintain the capabilities of the traditional non-deployable telescopes, but also have compacter launch volume and lighter weight. We investigate a telescope with precise deployable structure based on coilable tensegrity. Before launch, the secondary mirror support structure is coiled, and when the satellite is in orbit, the secondary mirror is deployed with the elastic strain energy from the coiled longerons. There are mainly three parts in this paper. Firstly, the telescope optics is presented. A Ritchey-Chretien (RC) type optical system with 150mm aperture is designed. Secondly, the deployable telescope structure is designed for the RC system. The deployable structure mainly consists of coilable longerons, batten rings, and diagonal stringers. The finite element method (FEM) is used to analyze the dynamics of the unfolded telescope structure. Thirdly, the adjusting mechanism for secondary mirror is discussed. Piezoelectric actuators can be used to achieve remote alignment to improve the performance of the imaging system. | ||||||
Accession Number: WOS:000325484000046 | ||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | ||||||
Conference Date: JUN 25-27, 2013 | ||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||
Author Identifiers: | ||||||
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ISSN: 0277-786X | ||||||
eISSN: 1996-756X | ||||||
ISBN: 978-0-8194-9777-2 |
Record 93 of 103 | ||||||
Title: A Study of Femtosecond Laser Machining Technology Applied in Air-Film Holes on Turbine Blades | ||||||
Author(s): Zhao, HL (Zhao, Hualong); Zhu, WY (Zhu, Wenyu); Yang, XJ (Yang, Xiaojun); Gao, SF (Gao, Shifang); Zhao, HY (Zhao, Hongyan) | ||||||
Edited by: Liu H; Yang Y; Shen S; Zhong Z; Zheng L; Feng P | ||||||
Source: MATERIALS, MECHANICAL ENGINEERING AND MANUFACTURE, PTS 1-3 Book Series: Applied Mechanics and Materials Volume: 268-270 Pages: 487-+ DOI: 10.4028/www.scientific.net/AMM.268-270.487 Published: 2013 | ||||||
Abstract: Femtosecond laser with the features of ultrashort pulse duration and ultrahigh peak power can achieve "cold" machining. The recast layer and micro-cracks of the hole wall can be ruduced effectively by applying femtosecond laser in processing air-film holes on turbine blades, and the machining accuracy and consistency of the hole shape will increase. In this paper, the high-speed rotating femtosecond laser beam is adopted in several currently used turbine blade materials for air-film holes machining, and high quality air-film holes without hole wall recast layer and micro-cracks are processed through a large number of experiments to optimize machining technology and technological parameter. | ||||||
Accession Number: WOS:000320476800102 | ||||||
Conference Title: 2nd International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM 2012) | ||||||
Conference Date: NOV 17-18, 2012 | ||||||
Conference Location: Changsha, PEOPLES R CHINA | ||||||
Conference Sponsors: Hunan Prov Text Engn Ctr | ||||||
Author Identifiers: | ||||||
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ISSN: 1660-9336 | ||||||
ISBN: 978-3-03785-579-9 |
Record 94 of 103 |
Title: Dynamic focus-position detection technique with array camera in long focal length system |
Author(s): Zhao, JN (Zhao, Juanning); Dong, XN (Dong, Xiaona); Da, ZS (Da, Zhengshang); Li, HG (Li, Hongguang) |
Edited by: Fu Y |
Source: ADVANCES IN OPTICS MANUFACTURE Book Series: Key Engineering Materials Volume: 552 Pages: 484-490 DOI: 10.4028/www.scientific.net/KEM.552.484 Published: 2013 |
Abstract: A precise detection technique with array camera is discussed for the detection of dynamic focus position in this paper. This technique is well applicable for measuring the focal spot shifting of large and slow lens or optical systems. Two coated wedges are adopted in light path to supply bands of beams, which form the spots matrix on the detector. Focus position shifting can be indirectly obtained from position shifting of the smallest spot on the detector. The technology discussed here is simple and accurate; it also solves the problem that dynamical focal spot position shifting is immeasurable for conventional focal length measureing methods. |
Accession Number: WOS:000322090100083 |
Conference Title: 3rd Asia Pacific Conference on Optics Manufacture (APCOM 2012) |
Conference Date: AUG 26-28, 2012 |
Conference Location: Changchun, PEOPLES R CHINA |
Conference Sponsors: Changchun Univ Sci & Technol, Hong Kong Polytechn Univ, Adv Opt Mfg Ctr, Chinese Acad Sci, Changchun Inst Opt, Fine Mech & Phys, Jilin Univ, Natl Univ Defense Technol, Sci & Technol Low Light Level Night Vision Lab, Natl Key Lab High Power Semicond Laser, Info Tek Informat Sci & Technol Co Inc, Chinese Opt Soc, Opt Soc Amer, Chinese Soc Astronaut, Profess Assoc Photoelectron Technol |
ISSN: 1013-9826 |
Record 95 of 103 | |||||||||||||||
Title: Image Jigsaw Puzzles with A Self-Correcting Solver | |||||||||||||||
Author(s): Zheng, XT (Zheng, Xiangtao); Lu, XQ (Lu, Xiaoqiang); Yuan, Y (Yuan, Yuan) | |||||||||||||||
Edited by: Zhang X; Zhou Z; Wang Q; Luo X | |||||||||||||||
Source: 2013 INTERNATIONAL CONFERENCE ON VIRTUAL REALITY AND VISUALIZATION (ICVRV 2013) Pages: 112-118 DOI: 10.1109/ICVRV.2013.26 Published: 2013 | |||||||||||||||
Abstract: Jigsaw puzzle is an intellectual game and serves as a platform for many scientific applications. Several computational methods have been proposed to deal with the jigsaw puzzle problem in recent years. However, there are still some drawbacks. First, these methods fail to consider the content consistency of the reconstructed images. Specially, the traditional measures only reflect similarity between adjoining pieces but neighboring pieces. Second, these methods cannot guarantee the overall reconstruction correctness, because the strategy of assembly merely tries to correct the measure of adjoining pieces at each step. To overcome these drawbacks, this paper proposes a new method which contributes the follows: 1) A new measure considers the transmission relationships of four neighboring pieces to make better use of content consistency. 2) A self-correcting mechanism avoids error accumulation of adjoining matrix and improves the overall accuracy of assembly, which is achieved through ordering the pairwise relations. Experimental results on 20 images demonstrate that the proposed method significantly improves the performance and outperforms the state-of-the-art methods. | |||||||||||||||
Accession Number: WOS:000330838000018 | |||||||||||||||
Conference Title: International Conference on Virtual Reality and Visualization (ICVRV) | |||||||||||||||
Conference Date: SEP 14-15, 2013 | |||||||||||||||
Conference Location: Xian, PEOPLES R CHINA | |||||||||||||||
Conference Sponsors: China Comp Federat, China Comp Federat, VR & Visualizat Comm, China Soc Image & Graph, VR Comm, China Syst Simulat Assoc, VR Comm, China Syst Simulat Assoc, Digital Entertainment Comm, IEEE Comp Soc, Transact Edutainment, NW Polytechn Univ, Sch Comp Sci & Engn, Shaanxi Prov Key Lab Signal & Image Informat Process, Beihang Univ, State Key Lab VR Technol & Syst, CAS, Inst Automat, Natl Lab Pattern Recognit | |||||||||||||||
Author Identifiers: | |||||||||||||||
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ISBN: 978-0-7695-5150-0 |
Record 96 of 103 |
Title: A DIRECTIONAL SHOCK DIFFUSION APPROACH TO SINGLE IMAGE SUPER-RESOLUTION |
Author(s): Zhou, ZF (Zhou, Zuofeng); Fan, GL (Fan, Guoliang) |
Book Group Author(s): IEEE |
Source: 2013 20TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP 2013) Book Series: IEEE International Conference on Image Processing ICIP Pages: 844-848 Published: 2013 |
Abstract: We present a directional shock diffusion approach to single image super-resolution(SR) that is featured by two special treatments to image primitives including edges, corners and junctions. The first is to incorporate an adaptively weighted shock filter to recover the edge sharpness along with the structure-sensitive diffusion terms, and the second is to perform structure oriented diffusion that aims to preserve smooth boundary contours and sharp corners by using multiple orientation estimation. Experimental results show that proposed approach outperforms recent methods for both noiseless and noisy cases on several commonly used image databases. |
Accession Number: WOS:000351597600170 |
Conference Title: 20th IEEE International Conference on Image Processing (ICIP) |
Conference Date: SEP 15-18, 2013 |
Conference Location: Melbourne, AUSTRALIA |
Conference Sponsors: Inst Elect & Elect Engineers, IEEE Signal Proc Soc |
ISSN: 1522-4880 |
ISBN: 978-1-4799-2341-0 |
Record 97 of 103 | |||||||||
Title: Research on the method of fast photoelectric diagnostics based on ordinary CCD | |||||||||
Author(s): Zhu, BL (Zhu, Bingli); Bai, YL (Bai, Yonglin); Liu, BY (Liu, Baiyu); Wang, B (Wang, Bo); Bai, XH (Bai, Xiaohong); Gou, YS (Gou, Yongsheng); Qin, JJ (Qin, Junjun); Yang, WZ (Yang, Wenzheng) | |||||||||
Edited by: Ohta J; Wu N; Li B | |||||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: IMAGING SENSORS AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8908 Article Number: 89080R DOI: 10.1117/12.2032841 Published: 2013 | |||||||||
Abstract: A novel method to realize fast photoelectric diagnostics using ordinary CCD is presented. By changing the mode of charge transfer of CCD, fast photoelectric diagnostics of single point with linear CCD and high-speed line scanning with array CCD can be achieved respectively. A fast photoelectric diagnostics system of single point based on linear CCD has been designed and fabricated to investigate the feasibility of this method. A pulsed blue light emitting diode (LED) has been used to measure the system. As a proof of concept, the rate of photoelectric diagnostics of single point reachs up to 20 MHz. The results demonstrated that the method of fast photoelectric diagnostics based on ordinary CCD is feasible. | |||||||||
Accession Number: WOS:000325484000026 | |||||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Imaging Sensors and Applications | |||||||||
Conference Date: JUN 25-27, 2013 | |||||||||
Conference Location: Beijing, PEOPLES R CHINA | |||||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | |||||||||
Author Identifiers: | |||||||||
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ISSN: 0277-786X | |||||||||
eISSN: 1996-756X | |||||||||
ISBN: 978-0-8194-9777-2 |
Record 98 of 103 | ||||||||||||||||||
Title: Design of Lens-hood in the Space Fisheye Optical System | ||||||||||||||||||
Author(s): Zhu, Q (Zhu Qing); Zhang, ZH (Zhang Zhao-hui); Zhang, Z (Zhang Zhi); Yan, A (Yan Aqi); Cao, JZ (Cao Jian-zhong); Zhang, KS (Zhang Kai-sheng) | ||||||||||||||||||
Edited by: Gong H; Shi Z; Chen Q; Lu J | ||||||||||||||||||
Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2013: INFRARED IMAGING AND APPLICATIONS Book Series: Proceedings of SPIE Volume: 8907 Article Number: 89071A DOI: 10.1117/12.2032304 Published: 2013 | ||||||||||||||||||
Abstract: Due to the extra wide field of view, fisheye optical systems are appropriately applied in space camera for scouting large-scale objects with near-distance. At the same time, because of the violent sunlight linger within the field of view more than other optical system and more stray light occur during the period, to design proper lens-hood can effectively reduce the sunshine time. Another distinct characteristic of fisheye optical system is the first protrude lens, which is contrived with negative focus to trace the ray with angle about even above 90 degree of incidence. Consequently, the first lens is in danger of damaging by scratching when operating the camera during the ground experiments without lens-hood. Whereas on account of the huge distortion which is the third mainly characteristic of fisheye optical system, to design appropriate lens-hood is a tough work comparing with other low-distortion optical system, especially for those whose half diagonal field is more than 90 degrees. In this paper, an research carried out on the design lens-hood for fisheye is proposed. In the way of reverse ray-tracing, the location on the first lens and point-vector for each incident ray can be accurately calculated. Thus the incident ray intersecting the first lens corresponds to the boundary of the image sensor form the effective object space. According to the figure of the lens and the incident rays, the lens-hood can be confirmed. In the proposed method, a space fisheye lens is presented as a typical lens, whose horizontal field and vertical field are 134 degrees, diagonal field is up to 192 degrees, respectively. The results of design for the lens-hood show that the lingering time of sunshine is shorten because of obstructing some redundant sunlight, and the first outstanding lens are protected in the most degree. | ||||||||||||||||||
Accession Number: WOS:000325423700042 | ||||||||||||||||||
Conference Title: 5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications | ||||||||||||||||||
Conference Date: JUN 25-27, 2013 | ||||||||||||||||||
Conference Location: Beijing, PEOPLES R CHINA | ||||||||||||||||||
Conference Sponsors: Chinese Soc Astronaut, Photoelectron Technol Comm, Tianjin Jinhang Inst Tech Phys, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Opt Radiat Lab, Sci & Technol Electromagnet Scattering Lab, SPIE, Opt Soc, European Opt Soc, Chinese Soc Astronaut | ||||||||||||||||||
Author Identifiers: | ||||||||||||||||||
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ISSN: 0277-786X | ||||||||||||||||||
ISBN: 978-0-8194-9776-5 |
Record 99 of 103 | ||||||||||||||||||||||||
Title: A Novel Rain Detection and Removal Approach Using Guided Filtering and Formation Modeling | ||||||||||||||||||||||||
Author(s): Zhu, QS (Zhu, Qingsong); Shao, L (Shao, Ling); Heng, PA (Pheng Ann Heng); Li, XL (Li, Xuelong) | ||||||||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||||||||
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO) Pages: 563-567 Published: 2013 | ||||||||||||||||||||||||
Abstract: The task of removing rain is of great significance for outdoor vision systems such as video surveillance, vision based navigation and so on. Rain produces complex time varying intensity fluctuations in images or videos, which seriously reduce the performance of outdoor vision systems. Due to similar visual appearances of rain and moving objects, the current rain removal algorithms cannot easily distinguish between the two. In this paper, we propose a novel algorithm for rain detection and removal based on the rain image formation model and edge-preserving filtering. The effectiveness of our algorithm is demonstrated in comparison with the existing approaches, by experimenting on videos of intricate scenes with moving objects or time-varying textures. | ||||||||||||||||||||||||
Accession Number: WOS:000352739000093 | ||||||||||||||||||||||||
Conference Title: IEEE International Conference on Robotics and Biomimetics (ROBIO) | ||||||||||||||||||||||||
Conference Date: DEC 12-14, 2013 | ||||||||||||||||||||||||
Conference Location: Shenzhen, PEOPLES R CHINA | ||||||||||||||||||||||||
Conference Sponsors: IEEE | ||||||||||||||||||||||||
Author Identifiers: | ||||||||||||||||||||||||
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Record 100 of 103 | ||||||||||||||||||||||||
Title: What's the Role of Image Matting in Image Segmentation? | ||||||||||||||||||||||||
Author(s): Zhu, QS (Zhu, Qingsong); Heng, PA (Pheng Ann Heng); Shao, L (Shao, Ling); Li, XL (Li, Xuelong) | ||||||||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||||||||
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO) Pages: 1695-1698 Published: 2013 | ||||||||||||||||||||||||
Abstract: Image Matting is the key technology in image processing, video editing, and film-making applications. With the fast development of modern information technology, image matting has gained increasing interests from both academic and industrial communities. So what is Image Matting? And, What's the Role of Image Matting in Image Segmentation? In this paper, we will try to give a comprehensive and constructive answer to the above questions. | ||||||||||||||||||||||||
Accession Number: WOS:000352739000281 | ||||||||||||||||||||||||
Conference Title: IEEE International Conference on Robotics and Biomimetics (ROBIO) | ||||||||||||||||||||||||
Conference Date: DEC 12-14, 2013 | ||||||||||||||||||||||||
Conference Location: Shenzhen, PEOPLES R CHINA | ||||||||||||||||||||||||
Conference Sponsors: IEEE | ||||||||||||||||||||||||
Author Identifiers: | ||||||||||||||||||||||||
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Record 101 of 103 | ||||||||||||||||||
Title: An Adaptive and Effective Single Image Dehazing Algorithm Based on Dark Channel Prior | ||||||||||||||||||
Author(s): Zhu, QS (Zhu, Qingsong); Yang, S (Yang, Shuai); Heng, PA (Heng, Pheng Ann); Li, XL (Li, Xuelong) | ||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO) Pages: 1796-1800 Published: 2013 | ||||||||||||||||||
Abstract: In this paper, we describe a novel and effective single image enhancement algorithm for haze image. As we observe that, the contrast and intensity of haze image after using dark channel prior approach will unavoidably tend to be lower than those of the real scene, we proposed a method using histogram specification to make an improvement on image after dark channel prior approach. We make a large number of experiment and find that, if dealing with a haze image with large background area and low contrast, dark channel prior result will become dark, also a general haze image after dark channel occurs different degree of anamorphose. We introduce an adaptive algorithm to repair the different kinds of anamorphose on the hazy image after dark channel prior. The experimental results shows that our method make the dehazing result more close to real scene. | ||||||||||||||||||
Accession Number: WOS:000352739000298 | ||||||||||||||||||
Conference Title: IEEE International Conference on Robotics and Biomimetics (ROBIO) | ||||||||||||||||||
Conference Date: DEC 12-14, 2013 | ||||||||||||||||||
Conference Location: Shenzhen, PEOPLES R CHINA | ||||||||||||||||||
Conference Sponsors: IEEE | ||||||||||||||||||
Author Identifiers: | ||||||||||||||||||
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Record 102 of 103 | ||||||||||||||||||||||||
Title: A Novel Segmentation Guided Approach for Single Image Dehazing | ||||||||||||||||||||||||
Author(s): Zhu, QS (Zhu, Qingsong); Heng, PA (Heng, Pheng Ann); Shao, L (Shao, Ling); Li, XL (Li, Xuelong) | ||||||||||||||||||||||||
Book Group Author(s): IEEE | ||||||||||||||||||||||||
Source: 2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO) Pages: 2414-2417 Published: 2013 | ||||||||||||||||||||||||
Abstract: This paper presents a novel image haze removal approach from single image. In the algorithm, the constant albedo and dark channel prior methods are combined to represent the transmission model of hazed image. And then, the watershed segmentation approach is introduced to decompose the input image into some gray level consistent areas. Compared with traditional fixed image partition schemes, better estimation of the atmospheric light can be obtained as well as to avoid the problem of halo artifacts. With the improved haze image modeling approach and atmospheric light estimation, the dehazed image with better visual quality can be achieved. | ||||||||||||||||||||||||
Accession Number: WOS:000352739000401 | ||||||||||||||||||||||||
Conference Title: IEEE International Conference on Robotics and Biomimetics (ROBIO) | ||||||||||||||||||||||||
Conference Date: DEC 12-14, 2013 | ||||||||||||||||||||||||
Conference Location: Shenzhen, PEOPLES R CHINA | ||||||||||||||||||||||||
Conference Sponsors: IEEE | ||||||||||||||||||||||||
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Record 103 of 103 |
Title: Output Performance of Gain Guided and Index Antiguided Fiber Lasers Pumped by Different Methods |
Author(s): Zhu, YG (Zhu, Yonggang); Duan, KL (Duan, Kailiang); Zhao, BY (Zhao, Baoying); Yang, HN (Yang, Hening); Zhang, ET (Zhang, Entao); Zhao, W (Zhao, Wei) |
Edited by: Chen Q; Zhou M; Chai R |
Source: 2013 22ND WIRELESS AND OPTICAL COMMUNICATIONS CONFERENCE (WOCC 2013) Pages: 486-490 Published: 2013 |
Abstract: The output performance of Yb3+ doped gain guided and index antiguided (GG-IAG) fiber lasers pumped by different methods are compared by numerically solving rate equations (REs) with additional leakage losses. Three pump models, including forward pump, backward pump and bidirectional pump are established combined with REs model. Calculation results show that the output powers and slope efficiencies of GG-IAG fiber from high to low under the same condition are obtained by bidirectional pump, backward pump and forward pump in sequence. The upper energy level particle population density N-2(z) and thermal distribution along the fiber generated by bidirectional pump are more uniform than that by other two pump methods. It benefits the lasing of GG-IAG fiber most. |
Accession Number: WOS:000332527100093 |
Conference Title: 22nd Wireless and Optical Communications Conference (WOCC) |
Conference Date: MAY 16-18, 2013 |
Conference Location: Chongqing Univ Posts & Telecommunicat, Chongqing, PEOPLES R CHINA |
Conference Sponsors: IEEE |
Conference Host: Chongqing Univ Posts & Telecommunicat |
ISBN: 978-1-4673-5697-8; 978-1-4673-5699-2 |