Record 1 of 111

Title: Spatially resolved X-ray spectroscopy using a flat HOPG crystal

Author(s): Yuan, XH (Yuan, X. H.); Carroll, DC (Carroll, D. C.); Coury, M (Coury, M.); Gray, RJ (Gray, R. J.); Brenner, CM (Brenner, C. M.); Lin, XX (Lin, X. X.); Li, YT (Li, Y. T.); Quinn, MN (Quinn, M. N.); Tresca, O (Tresca, O.); Zielbauer, B (Zielbauer, B.); Neely, D (Neely, D.); McKenna, P (McKenna, P.)

Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT  Volume: 653  Issue: 1  Pages: 145-149  DOI: 10.1016/j.nima.2010.12.147  Published: OCT 11 2011  

Abstract: A novel design of a 1-D imaging X-ray spectrometer is implemented, using a high efficiency HOPG (highly oriented pyrolitic graphite) Bragg crystal and a double-entrance-slit. The double slit provides self-calibration of the imaging magnification. The spatial and spectral resolutions and dispersion are characterised both analytically and by ray tracing simulations. A key feature of this approach is that it enables the X-ray spectrum to be measured over different regions of the plasma source. The application of this instrument is demonstrated in high intensity laser-foil interaction experiments. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000295663800032

Conference Title: 4th International Conference on Superstrong Fields in Plasmas

Conference Date: OCT 03-09, 2010

Conference Location: Varenna, ITALY

Conference Sponsors: European Sci Fdn (ESF), Piero Caldirola, Universita degli Studi Milano Bicocca, Dipartimento di Energia, Politecnico di Milano, INFN-Natl Inst Nucl Phys, European Phys Soc

Author Identifiers:

ISSN: 0168-9002

eISSN: 1872-9576

Record 2 of 111

Title: Mammographic mass segmentation: Embedding multiple features in vector-valued level set in ambiguous regions

Author(s): Wang, Y (Wang, Ying); Tao, DC (Tao, Dacheng); Gao, XB (Gao, Xinbo); Li, XL (Li, Xuelong); Wang, B (Wang, Bin)

Source: PATTERN RECOGNITION  Volume: 44  Issue: 9  Special Issue: SI  Pages: 1903-1915  DOI: 10.1016/j.patcog.2010.08.002  Published: SEP 2011  

Abstract: Mammographic mass segmentation plays an important role in computer-aided diagnosis systems. It is very challenging because masses are always of low contrast with ambiguous margins, connected with the normal tissues, and of various scales and complex shapes. To effectively detect true boundaries of mass regions, we propose a feature embedded vector-valued contour-based level set method with relaxed shape constraint.
In particular, we initially use the contour-based level set method to obtain the initial boundaries on the smoothed mammogram as the shape constraint. To prevent the contour leaking and meanwhile preserve the radiative characteristics of specific malignant masses, afterward, we relax the obtained shape constraint by analyzing possible valid regions around the initial boundaries. The relaxed shape constraint is then used to design a novel stopping function for subsequent vector-valued level set method. Since texture maps, gradient maps, and the original intensity map can reflect different characteristics of the mammogram, we integrate them together to obtain more accurate segmentation by incorporating the new stopping function into the newly proposed feature embedded vector-valued contour-based level set method.
The experimental results suggest that the proposed feature embedded vector-valued contour-based level set method with relaxed shape constraint can effectively find ambiguous margins of the mass regions. Comparing against existing active contours methods, the new scheme is more effective and robust in detecting complex masses. (C) 2010 Elsevier Ltd. All rights reserved.

Accession Number: WOS:000291834800008

Conference Title: 13th International Conference on Computer Analysis of Images and Patterns

Conference Date: SEP 02-04, 2009

Conference Location: Munster, GERMANY

Conference Sponsors: Univ Munster, Int Assoc Pattern Recognit, Olympus Soft Imaging Solut GmbH, Philips

Author Identifiers:

ISSN: 0031-3203

Record 3 of 111

Title: Study of non-classical light imaging technology

Author(s): Chen, MR (Chen, Ming-rui); Bi, SW (Bi, Si-wen); Dou, XB (Dou, Xi-bo); Liu, WY (Liu, Wang-yun)

Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT  Volume: 637  Pages: S130-S133  DOI: 10.1016/j.nima.2010.02.039  Supplement: 1  Published: MAY 1 2011  

Abstract: Non-classical light that generates through the optical parametric down-conversion process by using an optical parametric oscillator is introduced, and the imaging system based on the light is built. The characteristics of the light and the spatial resolution of the image are studied. The light irradiates directly on the object plate, producing a mass of signal photons, then the signal photons are collected by the charge-coupled device. The output electrical signal is collected by a high-speed data collection card and processed with software. Finally, the object image is acquired, and its revised image is obtained by image processing. The results indicate that the resolution of the image based on the non-classical infrared light is 1.43 times that of infrared coherent light. The non-classical light can be widely used for high-resolution imaging, spectrum analysis, and micro-biological sample detection. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000291416600032

Conference Title: International Workshop on Ultra-short Electron & Photon Beams - Techniques and Applications

Conference Date: SEP 07-11, 2009

Conference Location: Xian, PEOPLES R CHINA

ISSN: 0168-9002

eISSN: 1872-9576

Record 4 of 111

Title: Preparation of a new type of high-resolution light source

Author(s): Dou, XB (Dou, X. B.); Chen, X (Chen, X.); Bi, SW (Bi, S. W.); Liu, WY (Liu, W. Y.); Chen, MR (Chen, M. R.); Chen, L (Chen, L.)

Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT  Volume: 637  Pages: S134-S136  DOI: 10.1016/j.nima.2010.02.040  Supplement: 1  Published: MAY 1 2011  

Abstract: The generation of a new type of high-resolution non-classical light source with a wavelength of 1064 nm is demonstrated experimentally. A periodically poled KTiOPO4 (PPKTP) crystal is installed in a continuous-wave optical parametric amplifier (OPA), which is pumped by a 532 am laser and seeded by a weak 1064 am laser. The optical parametric down-conversion process is activated in the OPA and generates a non-classical optical field at a wavelength of 1064 nm. The partial squeezed spectrum is pre-detected by a homodyne detection setup. The experiment demonstrates that the resolution of the non-classical optical field is 1.43 times that of the classical optical field. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000291416600033

Conference Title: International Workshop on Ultra-short Electron & Photon Beams - Techniques and Applications

Conference Date: SEP 07-11, 2009

Conference Location: Xian, PEOPLES R CHINA

ISSN: 0168-9002

eISSN: 1872-9576

Record 5 of 111

Title: Theoretical study and experimental scheme for the generation of a 1064-nm continuous variable entangled light source with quasi-phase-matching PPKTP crystal

Author(s): Liu, WY (Liu, W. Y.); Bi, SW (Bi, S. W.)

Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT  Volume: 637  Pages: S153-S157  DOI: 10.1016/j.nima.2010.02.045  Supplement: 1  Published: MAY 1 2011  

Abstract: Beginning from Maxwell's equations, various factors required for the non-degenerate optical parametric amplifier (NOPA) to operate are considered step by step. Analytic expressions are obtained, generated from the experimental parameters and through the numerical simulation of the quantum-correlated spectrum between the signal and the idler modes from the NOPA operating below threshold. On this basis, an experimental program is designed for the generation of a 1064-nm continuous variable entanglement light source with a quasi-phase-matching periodical polarized KTiOPO4 (PPKTP) crystal through a below-threshold optical parametric down-conversion process. This will play a crucial role in subsequent experiments. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000291416600038

Conference Title: International Workshop on Ultra-short Electron & Photon Beams - Techniques and Applications

Conference Date: SEP 07-11, 2009

Conference Location: Xian, PEOPLES R CHINA

ISSN: 0168-9002

eISSN: 1872-9576

Record 6 of 111

Title: Spatial diagnostics of 532-nm laser-induced aluminum plasma

Author(s): Luo, WF (Luo, W. F.); Zhao, XX (Zhao, X. X.); Sun, QB (Sun, Q. B.); Gao, CX (Gao, C. X.); Tang, J (Tang, J.); Zhao, W (Zhao, W.)

Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT  Volume: 637  Pages: S158-S160  DOI: 10.1016/j.nima.2010.02.046  Supplement: 1  Published: MAY 1 2011  

Abstract: Spatial characteristics of the plasma generated by 532-nm Nd:YAG laser irradiation of aluminum alloy in air were studied. The electron density inferred by measuring the Stark broadened line profile of Al II at 281.62 nm decreases with increasing distance from the target surface. The electron temperature was determined by using the Boltzmann plot method. Due to thermal conduction towards the solid target and radiative cooling of the plasma, as well as conversion of thermal energy to kinetic energy, the electron temperature decreases both at the plasma edge and close to the target surface. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000291416600039

Conference Title: International Workshop on Ultra-short Electron & Photon Beams - Techniques and Applications

Conference Date: SEP 07-11, 2009

Conference Location: Xian, PEOPLES R CHINA

Author Identifiers:

ISSN: 0168-9002

eISSN: 1872-9576

Record 7 of 111

Title: Biased electric field analysis of a photoconductive antenna for terahertz generation

Author(s): Yang, J (Yang, Jian); Fan, WH (Fan, Wenhui); Xue, B (Xue, Bing)

Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT  Volume: 637  Pages: S165-S167  DOI: 10.1016/j.nima.2010.02.048  Supplement: 1  Published: MAY 1 2011  

Abstract: The development of terahertz (THz) science has been ongoing for decades. As such, the generation and detection of THz radiation tend to be advanced. Currently, there are two main approaches to detect THz radiation: free-space electro-optic sampling (FS-EOS) and photoconductive (PC) sampling. Among the generations, the photoconductive effect is significant in the amplitude of THz radiation, which is believed to be proportional to the magnitude of the inner electric field. In order to increase THz radiation by safely enhancing the biased electric field, simulations on the electric field distributions of several different antennas have been conducted during our research. As a result of comparing and analyzing the findings of the simulations, a specific antenna structure suitable for a much higher biased field has been designed. Furthermore, satisfactory THz radiation is expected from this antenna. (C) 2010 Elsevier B.V. All rights reserved.

Accession Number: WOS:000291416600041

Conference Title: International Workshop on Ultra-short Electron & Photon Beams - Techniques and Applications

Conference Date: SEP 07-11, 2009

Conference Location: Xian, PEOPLES R CHINA

Author Identifiers:

ISSN: 0168-9002

eISSN: 1872-9576

Record 8 of 111

Title: A fast and low complexity approach for H.264/AVC intra mode decision

Author(s): Su, XQ (Su, XiuQin); Ji, L (Ji, Lei); Li, XA (Li, Xiang)

Source: MULTIMEDIA TOOLS AND APPLICATIONS  Volume: 52  Issue: 1  Pages: 65-76  DOI: 10.1007/s11042-009-0452-z  Published: MAR 2011  

Abstract: As one of the main features of H.264/AVC, intra prediction coding technique acts as a basis for encoding performance and efficiency. In official reference software Joint Model (JM), it employs the rate distortion optimization (RDO) technique to get to the best encoding performance. By full searching (FS) all of the candidate modes under the rule of RDO, peak-signal-noise-rate (PSNR) decreases to a very low level, but at the same time, the complexity of calculation increases a lot. Many researchers had devoted to searching the fast algorithm which can decrease the complexity, and had designed so many excellent and intelligent fast algorithms. In this paper we introduced a low complexity and fast approach for H.264/AVC intra prediction algorithm. The new approach is based on reducing the number of candidate modes for further RDO calculation, and decreasing the computational complicacy. It can decide the interpolation direction accurately by calculating the directional pixel-value differences (DPD) of target block, and then do statistic with the obtained values to choose the most probable modes. The experimental results demonstrate that the proposed algorithm can achieve more than 70% time saving than JM, but only a tiny degradation of encoding performance is brought in.

Accession Number: WOS:000286990500006

Conference Title: 2nd International Congress on Image and Signal Processing

Conference Date: OCT 17-19, 2009

Conference Location: Tianjin, PEOPLES R CHINA

Conference Sponsors: Tianjin Univ Technol, IEEE Engn Med & Biol Soc (EMBS)

Author Identifiers:

ISSN: 1380-7501

eISSN: 1573-7721

Record 9 of 111

Title: Integrated Solution for High Resolution CCD Camera Imaging Circuits

Author(s): Bai, Z (Bai Zhe); Xu, YB (Xu Yanbing); Zhang, BH (Zhang Boheng); Duan, KL (Duan Kailiang)

Edited by: Ikeda M; Wu N; Zhang G; Ai K

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: ADVANCES IN IMAGING DETECTORS AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8194  Article Number: 819432  DOI: 10.1117/12.901001  Published: 2011  

Abstract: In this paper, compared with the traditional CCD camera imaging circuits, a kind of integrated solution for CCD imaging circuits is put forward. The principle of the traditional CCD camera imaging circuits is described briefly, and the foundational functions are introduced. CCD imaging circuits are the most important parts of the CCD camera, and they are mainly made up of CCD driver circuits and CCD signal processing circuits. The CCD signal processing circuits mainly consist of timing generator, preamplifier circuits, CDS circuits, low-pass filter circuits, PGA circuits, ADC circuits, storage circuits, output interface circuits, and so on. The popular solution is that all the circuits are made with separate components. Complex circuit configuration, difficult debugging, uptight power dissipation are evident. However, it goes without saying that the integrated solutions which combine ADC with FPGA device are high integration, simple configuration and better agility. Finally, the integrated solution for CCD imaging circuits is illustrated, and the problems of the circuits are analyzed and summarized in detail.

Accession Number: WOS:000295076300109

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Advances in Imaging Detectors and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut, SPIE

ISSN: 0277-786X

ISBN: 978-0-81948-835-0

Record 10 of 111

Title: A Study on the Buffeting Aberrance Regulation of TDICCD Mapping Camera

Author(s): Bai, Z (Bai Zhe); Ma, Z (Ma Zhen); Zhang, BH (Zhang Boheng)

Edited by: Ikeda M; Wu N; Zhang G; Ai K

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: ADVANCES IN IMAGING DETECTORS AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8194  Article Number: 819430  DOI: 10.1117/12.900996  Published: 2011  

Abstract: In this paper, the fundamental of the TDICCD mapping camera is introduced, and the influence of the satellite buffeting on the image quality of the TDICCD camera is analyzed. In order to reduce the influence, a regulated resolution is put forward. Compared with the traditional TDICCD mapping camera, a special TDICCD focal plane which several TDICCD devices splited joint end to end is designed. A great deal of information are captured through the focal plane, and a mathematical model is established to analyze the data information. Then the results are feed back to the satellite, and the attitude of the satellite is actively regulated in real time. Finally, make experiments and simulation to validate it. The experiment result indicate that the design is valid.

Accession Number: WOS:000295076300107

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Advances in Imaging Detectors and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut, SPIE

ISSN: 0277-786X

ISBN: 978-0-81948-835-0

Record 11 of 111

Title: LINEAR SVM CLASSIFICATION USING BOOSTING HOG FEATURES FOR VEHICLE DETECTION IN LOW-ALTITUDE AIRBORNE VIDEOS

Author(s): Cao, XB (Cao, Xianbin); Wu, CX (Wu, Changxia); Yan, PK (Yan, Pingkun); Li, XL (Li, Xuelong)

Book Group Author(s): IEEE

Source: 2011 18TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP)  Book Series: IEEE International Conference on Image Processing ICIP  Published: 2011  

Abstract: Visual surveillance from low-altitude airborne platforms has been widely addressed in recent years. Moving vehicle detection is an important component of such a system, which is a very challenging task due to illumination variance and scene complexity. Therefore, a boosting Histogram Orientation Gradients (boosting HOG) feature is proposed in this paper. This feature is not sensitive to illumination change and shows better performance in characterizing object shape and appearance. Each of the boosting HOG feature is an output of an adaboost classifier, which is trained using all bins upon a cell in traditional HOG features. All boosting HOG features are combined to establish the final feature vector to train a linear SVM classifier for vehicle classification. Compared with classical approaches, the proposed method achieved better performance in higher detection rate, lower false positive rate and faster detection speed.

Accession Number: WOS:000298962502138

Conference Title: 18th IEEE International Conference on Image Processing (ICIP)

Conference Date: SEP 11-14, 2011

Conference Location: Brussels, BELGIUM

Conference Sponsors: IEEE, IEEE Signal Proc Soc (SPS)

Author Identifiers:

ISSN: 1522-4880

ISBN: 978-1-4577-1303-3

Record 12 of 111

Title: COLLABORATIVE KALMAN FILTERS FOR VEHICLE TRACKING

Author(s): Cao, XB (Cao, Xianbin); Shi, ZR (Shi, Zhengrong); Yan, PK (Yan, Pingkun); Li, XL (Li, Xuelong)

Book Group Author(s): IEEE

Edited by: Tan T; Katagiri S; Tao J; Nakamura A; Larsen J

Source: 2011 IEEE INTERNATIONAL WORKSHOP ON MACHINE LEARNING FOR SIGNAL PROCESSING (MLSP)  Book Series: IEEE International Workshop on Machine Learning for Signal Processing  Published: 2011  

Abstract: Airborne vehicle tracking system is receiving increasing attention because of its high mobility and large surveillance scope. However, tracking multiple vehicles simultaneously on airborne platform is a challenging problem, owing to uncertain vehicle motion and visible frame-to-frame jitter caused by camera vibration. To address these problems, a new collaborative tracking framework is proposed. The framework consists of two level tracking processes: to track vehicles as groups, the higher level builds the relevance network and divides target vehicles into different groups; the relevance is calculated based on the status information of vehicles obtained by the lower level. This kind of group tracking takes into account the relevance of vehicles and reduces the impact of camera vibration, so the proposed method is applicable for multi-vehicle tracking in airborne videos. Experimental results demonstrate that the proposed method has better performance in terms of the tracking speed and accuracy compared to other existing approaches.

Accession Number: WOS:000298259900036

Conference Title: 21st IEEE International Workshop on Machine Learning for Signal Processing (MLSP)

Conference Date: SEP 18-21, 2011

Conference Location: Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit (NLPR), Beijing, PEOPLES R CHINA

Conference Sponsors: IEEE, CASIA, Intel, Dolby, IEEE Signal Proc Soc

Conference Host: Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit (NLPR)

Author Identifiers:

ISSN: 2161-0363

ISBN: 978-1-4577-1623-2

Record 13 of 111

Title: PUTTING POSES ON MANIFOLD FOR ACTION RECOGNITION

Author(s): Cao, XB (Cao, Xianbin); Ning, B (Ning, Bo); Yan, PK (Yan, Pingkun); Li, XL (Li, Xuelong)

Book Group Author(s): IEEE

Edited by: Tan T; Katagiri S; Tao J; Nakamura A; Larsen J

Source: 2011 IEEE INTERNATIONAL WORKSHOP ON MACHINE LEARNING FOR SIGNAL PROCESSING (MLSP)  Book Series: IEEE International Workshop on Machine Learning for Signal Processing  Published: 2011  

Abstract: In action recognition, bag of words based approaches have been shown to be successful, for which the quality of codebook is critical. This paper proposes a novel approach to select key poses for the codebook, which models the descriptor space utilizing manifold learning to recover the geometric structure of the descriptors on a lower dimensional manifold space. A PageRank based centrality measure is developed to select key poses on the manifold. In each step, a key pose is selected and the remaining model is modified to maximize the discriminative power of selected codebook. In classification, the ambiguity of each action couple is evaluated through cross validation. An additional subdivision will be executed for ambiguous pairs. Experiments on ut-tower dataset showed that our method is able to obtain better performance than the state-of-the-art methods.

Accession Number: WOS:000298259900035

Conference Title: 21st IEEE International Workshop on Machine Learning for Signal Processing (MLSP)

Conference Date: SEP 18-21, 2011

Conference Location: Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit (NLPR), Beijing, PEOPLES R CHINA

Conference Sponsors: IEEE, CASIA, Intel, Dolby, IEEE Signal Proc Soc

Conference Host: Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit (NLPR)

Author Identifiers:

ISSN: 2161-0363

ISBN: 978-1-4577-1623-2

Record 14 of 111

Title: PUTTING IMAGES ON A MANIFOLD FOR ATLAS-BASED IMAGE SEGMENTATION

Author(s): Cao, YH (Cao, Yihui); Yuan, Y (Yuan, Yuan); Li, XL (Li, Xuelong); Yan, PK (Yan, Pingkun)

Book Group Author(s): IEEE

Source: 2011 18TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP)  Book Series: IEEE International Conference on Image Processing ICIP  Pages: 289-292  Published: 2011  

Abstract: In medical image analysis, atlas-based segmentation has become a popular approach. Given a target image, how to select the atlases with the similar shape of anatomical structure to the input image is one of the most critical factors affecting the segmentation accuracy. In this paper, we propose a novel strategy by putting the images on a manifold to analyze the intrinsic similarity between the images. A subset of atlases can be selected and the optimal fusion weights are computed in a low-dimensional manifold space. Finally, it combines the selected atlases by using the corresponding weights for image segmentation. The experimental results demonstrated that our proposed method is robust and accurate especially when a large number of training samples are available.

Accession Number: WOS:000298962500073

Conference Title: 18th IEEE International Conference on Image Processing (ICIP)

Conference Date: SEP 11-14, 2011

Conference Location: Brussels, BELGIUM

Conference Sponsors: IEEE, IEEE Signal Proc Soc (SPS)

Author Identifiers:

ISSN: 1522-4880

ISBN: 978-1-4577-1303-3

Record 15 of 111

Title: Segmenting Images by Combining Selected Atlases on Manifold

Author(s): Cao, YH (Cao, Yihui); Yuan, Y (Yuan, Yuan); Li, XL (Li, Xuelong); Turkbey, B (Turkbey, Baris); Choyke, PL (Choyke, Peter L.); Yan, PK (Yan, Pingkun)

Edited by: Fichtinger G; Martel A; Peters T

Source: MEDICAL IMAGE COMPUTING AND COMPUTER-ASSISTED INTERVENTION, MICCAI 2011, PT III  Book Series: Lecture Notes in Computer Science  Volume: 6893  Pages: 272-+  Part: III  Published: 2011  

Abstract: Atlas selection and combination are two critical factors affecting the performance of atlas-based segmentation methods. In the existing works, those tasks are completed in the original image space. However, the intrinsic similarity between the images may not be accurately reflected by the Euclidean distance in this high-dimensional space. Thus, the selected atlases may be away from the input image and the generated template by combining those atlases for segmentation can be misleading. In this paper, we propose to select and combine atlases by projecting the images onto a low-dimensional manifold. With this approach, atlases can be selected according to their intrinsic similarity to the patient image. A novel method is also proposed to compute the weights for more efficiently combining the selected atlases to achieve better segmentation performance. The experimental results demonstrated that our proposed method is robust and accurate, especially when the number of training samples becomes large.

Accession Number: WOS:000306990200034

PubMed ID: 22003709

Conference Title: 14th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI 2011)

Conference Date: SEP 18-22, 2011

Conference Location: Toronto, CANADA

Author Identifiers:

ISSN: 0302-9743

eISSN: 1611-3349

ISBN: 978-3-642-23625-9; 978-3-642-23626-6

Record 16 of 111

Title: Using An Acousto-optic Tunable Filters For Hyper Spectro-polarimetric Imaging

Author(s): Chang, LY (Chang Ling-ying); Zhao, BC (Zhao Bao-chang); Wen, DS (Wen De-sheng); Chen, RL (Chen Rong-li); Qiu, YH (Qiu Yue-hong)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 81961S  DOI: 10.1117/12.901014  Published: 2011  

Abstract: Of all the hyperspectral imaging system using the optical filtering elements available,. AOTF(Acousto-optic tunable filters) is best to choose a filtering optical element that has high-speed spectral selectivity with high resolution, it can greatly reduces the amount of data collection and processing. In this paper, First, the work principle of AOTF was introduced, then described the AOTF imaging system, it covers the spectral band from 400nm to 900nm with a spectral resolution of near 2nm at 400nm and 10nm at 900nm. The device can provide about 2.2 degrees view field angle and 10mm aperture, which included TeO2 crystal, image optical system, a charged coupled device(CCD) camera, rf electronics and control and processing software. Finally the paper presented the results of laboratory image testing.

Accession Number: WOS:000295078500064

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 17 of 111

Title: Numerical Simulation of Terahertz Generation and Detection Based on Ultrafast Photoconductive Antennas

Author(s): Chen, LC (Chen Long-chao); Fan, WH (Fan Wen-hui)

Edited by: Zhang XC; Yao J; Zhang C; Wang Z

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: TERAHERTZ WAVE TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8195  Article Number: 81950K  DOI: 10.1117/12.900319  Published: 2011  

Abstract: The numerical simulation of terahertz generation and detection in the interaction between femtosecond laser pulse and photoconductive material has been reported in this paper. The simulation model based on the Drude-Lorentz theory is used, and takes into account the phenomena that photo-generated electrons and holes are separated by the external bias field, which is screened by the space-charge field simultaneously. According to the numerical calculation, the terahertz time-domain waveforms and their Fourier-transformed spectra are presented under different conditions. The simulation results indicate that terahertz generation and detection properties of photoconductive antennas are largely influenced by three major factors, including photo-carriers' lifetime, laser pulse width and pump laser power. Finally, a simple model has been applied to simulate the detected terahertz pulses by photoconductive antennas with various photo-carriers' lifetimes, and the results show that the detected terahertz spectra are very different from the spectra radiated from the emitter.

Accession Number: WOS:000295077600019

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Terahertz Wave Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Professional Comm, CSA, Tianjin Jinhang Inst Techn Phys, CASIC, Sci & Technol Low Light Level Night Vision Lab, Chinese Soc Astronaut, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-836-7

Record 18 of 111

Title: A practical method to Extending Dynamic Range of CCD Camera

Author(s): Chen, Z (Chen, Zhi); Qiu, YH (Qiu, Yuehong); Wen, Y (Wen, Yan); Jiang, BT (Jiang, Baotan); Gao, B (Gao, Bo)

Edited by: Ikeda M; Wu N; Zhang G; Ai K

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: ADVANCES IN IMAGING DETECTORS AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8194  Article Number: 819417  DOI: 10.1117/12.900007  Published: 2011  

Abstract: CCD (Charge Coupled Device) is the most popular detector for camera to detect low levels of light for wavelengths from 300nm to 1100nm. Contemporary CCD has read noise level equivalent to a few electrons, and Well capacity over 100,000 electrons. In order to take full advantage of these characteristics, it needs the dynamic of ADC must exceed the dynamic of the CCD. That is the number of bits provided by the ADC must exceed 16 bits. While the high reliability and inexpensive 16-20 bit A/D converter is few. In this paper, we firstly analyze CCD noise and then present the principle to extend the dynamic of the CCD in signal processing chain using two low resolution ADC with different sensitivity. At last we present a concrete example of improving the resolution of the ADC is by tow parallel low resolution ADCS with developing software to suitably process the converted analog-to-digital signal to achieve the same effect as a higher resolution ADC.

Accession Number: WOS:000295076300042

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Advances in Imaging Detectors and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-835-0

Record 19 of 111

Title: Design and Implementation of Cooling System for Focal Plane Assembly of Observation Camera in Astronomical Satellite

Author(s): Cheng, P (Cheng Pan); Qu, YS (Qu Youshan); Li, HJ (Li Huijuan); Tan, JH (Tan Jiahai)

Book Group Author(s): IEEE

Source: 2011 INTERNATIONAL CONFERENCE ON ELECTRONICS, COMMUNICATIONS AND CONTROL (ICECC)  Pages: 2615-2619  Published: 2011  

Abstract: In order to observe dim astronomical objects, the imaging sensor of the Astronomical Observation Camera (AOC) in the satellite needs to work at -65 degrees C to suppress its dark current noise. To achieve the low temperature environment, a cooling system on Thermoelectric Cooler (TEC) was designed. The cooling system adopted a Single Chip Microprocessor as its control computing platform and its software used self-adaptive digital PID control algorithm was developed. The data of the real-time temperatures, captured by the acquiring circuits from the temperature sensors which were mounted at the back surface of the imaging sensor, were used to be the input of the selfadaptive digital PID control algorithm, and the output calculated by the algorithm was applied to adjusted the control current of the driver circuit for the TEC, and then the temperature of Focal Plane Assembly (FPA) was cooled down or warmed up to satisfy the working requirements. Experimental results show that the designed system can control the temperature gradient of the FPA less than 1 degrees C and reach its normal working temperature -65 degrees C quickly. Its control accuracy is +/-2 degrees C. The practical experiment results displayed the imaging performance of the FPA was stable and the designed cooling system suppressed the dark current noise effectively to get high Signal-to-Noise Ratio images, and the designed cooling system worked stable.

Accession Number: WOS:000298656802186

Conference Title: IEEE International Conference on Electronics, Communications and Control (ICECC)

Conference Date: SEP 09-11, 2011

Conference Location: Ningbo, PEOPLES R CHINA

Conference Sponsors: IEEE, Ningbo Univ, Key Lab Sci & Tech Natl Def (KLSTND)

ISBN: 978-1-4577-0321-8

Record 20 of 111

Title: Design of Bipod Flexures for Space Mirror

Author(s): Chu, CB (Chu Chang-bo); Li, YC (Li Ying-cai); Chai, WY (Chai Wen-yi); Fan, XW (Fan Xue-wu)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 819620  DOI: 10.1117/12.902227  Published: 2011  

Abstract: Bipod flexures are used in many high-precision space mirror mount applications. The flexures are used to provide moment isolation for the mirror to minimize surface figure distortion resulting from mount assembly error or distortion of the mount temperature-change-induced. In this paper, we developed a bipod flexure for the Zerodur primary mirror with diameter 520 mm and thickness 70 mm. The characteristic of the bipod flexure is the two-strip flexure on the top and bottom of each leg. By those, the bending stress in mirror resulting from the mount assembly is remarkably reduced. Thanking to a semi-open structure with small mouth and big stomach in the back and a six parts symmetrical honeycomb structure for the primary mirror, using the FEA (Finite Element Analysis) method we analyze that how the axial and circumferential locations of the three bipod flexures impact mirror surface figure and gain the better result after optimization. In the design of the detail bipod flexures, thickness of the blade is analyzed and compared; also we achieve an optimization design. The two results demonstrate that the bipod flexures could keep the precision of the mirror surface figure under the load of external force and thermal constraints and meanwhile they could keep stability of structure.

Accession Number: WOS:000295078500072

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 21 of 111

Title: Probability of acquisition of three-dimensional imaging laser radar

Author(s): Dong, LJ (Dong Li-jun); Zhu, SL (Zhu Shao-lan); Sun, CD (Sun Chuan-dong); Gao, CX (Gao Cun-xiao); Song, ZY (Song Zhi-yuan)

Edited by: Amzajerdian F; Chen W; Gao C; Xie T

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: LASER SENSING AND IMAGING AND BIOLOGICAL AND MEDICAL APPLICATIONS OF PHOTONICS SENSING AND IMAGING  Book Series: Proceedings of SPIE  Volume: 8192  Article Number: 81924A  DOI: 10.1117/12.901932  Part: 1  Published: 2011  

Abstract: Three-dimensional imaging laser radar (3-D ladar) is widely used in area of modern military, scientific research, agriculture and industry. Because of its many features such as angle-angle-range capturing, high resolution, anti-jamming ability and no multipath effect, but it has to scan for target searching, acquiring and tracking. This paper presents a novel probability model of target acquiring which provides a theoretical basis for optimizing the scanning mechanism. The model combines space and time, target moving velocity and ladar scanning velocity together. Then the optimum scanning mechanism to obtain the maximum probability of acquisition and associated with different targets can be gained. The result shows that this model provides a method to optimize parameter for designing of the scanner.

Accession Number: WOS:000295055800153

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Laser Sensing and Imaging and Biological and Medical Applications of Photonics Sensing and Imaging

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vision Lab, Chinese Soc Astronaut

ISSN: 0277-786X

ISBN: 978-0-81948-833-6

Record 22 of 111

Title: FPGA-based Multi-bit All State Pseudo-Random Sequences Generator

Author(s): Duan, YN (Duan Yingni); Zhang, HF (Zhang Haifeng)

Book Group Author(s): IEEE

Source: 2011 INTERNATIONAL CONFERENCE ON ELECTRONICS, COMMUNICATIONS AND CONTROL (ICECC)  Pages: 858-861  Published: 2011  

Abstract: Aiming at the problems of how to obtain the feedback function of M-sequence (all state sequences) signal and how to generate all the feedback sequence, In this paper we get the nonlinear feedback function by modifing the linear feedback network function of the linear shift register(LFSR) and realize the 12-bit M sequence using FPGA(field programmable gate array).

Accession Number: WOS:000298656800214

Conference Title: IEEE International Conference on Electronics, Communications and Control (ICECC)

Conference Date: SEP 09-11, 2011

Conference Location: Ningbo, PEOPLES R CHINA

Conference Sponsors: IEEE, Ningbo Univ, Key Lab Sci & Tech Natl Def (KLSTND)

ISBN: 978-1-4577-0321-8

Record 23 of 111

Title: Development of control circuits for the CCD Stereo Camera of Chang'E-1 satellite based on FPGA

Author(s): Duan, YQ (Duan Yong-qiang); Wen, DS (Wen De-sheng); Gao, W (Gao Wei); Zheng, PY (Zheng Pei-yun); Zhao, BC (Zhao Bao-chang)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 819614  DOI: 10.1117/12.900345  Published: 2011  

Abstract: The CCD Stereo Camera is a principal science payload on board the Chang'E-1 (CE-1) satellite, developed and launched by China for the first Lunar Exploration Program. The principal task of the camera is to take image of the lunar surface in the visible band and obtains three-dimensional lunar terrain. The CCD Stereo Camera is designed based on three-linear array photogrammetric theories. The focal plane of the camera is comprised of a frame transfer CCD with size of 1024x1024 pixels. There are only three lines to be used to form a three-linear array, and the other lines are not used. The timing and control circuits of the camera are designed based on FPGA. An Actel's anti-fuse based FPGA, A1020B, is available, but the speed and logical resources of the device both are limited. This paper describes the design requirements, considerations and trade-off subject to the constraints. Especially, A novel logic circuit is introduced to generate the pulses with width of about 10ns similar to 20ns with constraint of 8MHz external clock, which is used to design correlated double sampling (CDS) control signals and CCD reset signal. Finally, the result of flying verifications on-board of the timing and control circuits are also described.

Accession Number: WOS:000295078500040

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-81948-837-4

Record 24 of 111

Title: Design Of High Ratio Middle Infrared Continuous Zoom Optical System

Author(s): Fan, ZY (Fan Zheyuan); Cao, JZ (Cao Jianzhong); Yang, HT (Yang Hongtao); Qu, ES (Qu Enshi); Wu, DS (Wu Dengshan)

Edited by: Puschell JJ; Chu J; Gong H; Lu J

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: ADVANCES IN INFRARED IMAGING AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8193  Article Number: 81931R  DOI: 10.1117/12.900176  Published: 2011  

Abstract: In recent years, the demand for infrared zoom systems is increasing in proportion with the development of infrared technology and its applications. To meet this demand a variety of zoom lenses have been designed. Infrared cameras operating in the 3-5 mu m spectral band are used in a wide variety of applications such as targeting, rescue, guidance and surveillance systems as well as other equipment. This paper using cool 320x240 detector with staring focal plane array and secondary imaging, a mid-wave optical system using mechanical-compensated with large-aperture and a zoom range of 10: 1 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 33mm similar to 330mm continuous zoom and FOV = 20.61 degrees similar to 2.08 degrees, it consists of 7 lenses including 3 aspheric surface. The length of the system is 262mm with the reflection mirror multipass optical path. The results show that the modulation transfer function(MTF) are above 0.4 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 narcissus analysis is done and 100% cold shield efficiency is obtained. Finallythe monotonic and smooth Cam curve is given. 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:000297573900062

Conference Title: 4th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Advances in Infrared Imaging and Applications

Conference Date: 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Astronaut, Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab

ISSN: 0277-786X

ISBN: 978-0-81948-834-3

Record 25 of 111

Title: Optical Focusing by Planar Lenses Based on Nano-scale Metallic Slits in Visible Regime

Author(s): Feng, D (Feng, Di); Zhang, CX (Zhang, Chunxi)

Edited by: Lee G

Source: 2011 INTERNATIONAL CONFERENCE ON PHYSICS SCIENCE AND TECHNOLOGY (ICPST)  Book Series: Physics Procedia  Volume: 22  Pages: 428-434  DOI: 10.1016/j.phpro.2011.11.067  Published: 2011  

Abstract: A kind of planar metallic lenses is proposed to realize optical focusing in the visible wavelength through a metallic film with nano-scale slit arrays, which have the same depth but tuning widths. Due to the subwavelength and aperiodic nature of planar metallic lenses, we present the rigorous electromagnetic analysis by using two dimensional finite difference time domain method. The electromagnetic wave transports through the tuning slits in the form of surface plasmon polaritons, and gets the required phase retardations to focusing at the focal plane. We analyze the focusing characteristics of planar dielectric lens and metallic lens with tuning widths that are obtained by generalizing the relevant phase delay, for different incidence polarization waves (TM polarized case and TE polarized case). The computational calculation results show that, extraordinary optical transmission of surface plasmon polaritions through non uniform nano-scale metallic slits is observed, and it has contributions to the optical focusing, but cannot increase the focal energy compared with dielectric planar lens with the same profile, and the metallic lenses are more sensitive to the polarization of incidence wave than that of dielectric lenses. The influence of metallic lenses' thickness on the focal characteristics has been analyzed also. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of Garry Lee.

Accession Number: WOS:000298855300065

Conference Title: International Conference on Physics Science and Technology (ICPST)

Conference Date: DEC 12-13, 2011

Conference Location: Hong Kong, PEOPLES R CHINA

Conference Sponsors: Informat Engn Res Inst, IERI Circuit & Syst Soc

ISSN: 1875-3892

Record 26 of 111

Title: Medium-sized aperture deployable telescope for microsatellite application

Author(s): Feng, XG (Feng, Xuegui); Li, C (Li, Chuang); Ren, GR (Ren, Guorui)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 81961V  DOI: 10.1117/12.901038  Published: 2011  

Abstract: An important research interest on space optics is the ultra-light space telescope technology which is compatible with microsatellite platform. To realize lightweight telescope, one way is to develop deployable telescopes. They not only maintain the capabilities of traditional non-deployable telescopes but also have compacter launch volume and lighter weight and lower cost. We investigate the telescope with accurate deployable structure based on tape springs. Before launch, the secondary mirror support structure with tape springs is folded, and when the satellite is on orbit, the secondary mirror is deployed with the elastic strain energy of folded tape springs. There are mainly three parts in the paper. Firstly, the telescope optics was presented. A Ritchey-Chretien (RC) type optical system with 300mm aperture was designed. The influence of the secondary mirror misalignment on the optical performance was analyzed. Secondly, the deployable telescope structure with tape springs was designed for the RC system. The finite element method (FEM) was used to analysis the dynamics of the unfolded telescope structure. Finally, the deployment precision metering system was discussed.

Accession Number: WOS:000295078500067

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 27 of 111

Title: Image Quality Evaluation of Light Field Photography

Author(s): Fu, Q (Fu, Qiang); Zhou, ZL (Zhou, Zhiliang); Yuan, Y (Yuan, Yan); Bin, XL (Bin Xiangli)

Edited by: Farnand SP; Gaykema F

Source: IMAGE QUALITY AND SYSTEM PERFORMANCE VIII  Book Series: Proceedings of SPIE  Volume: 7867  Article Number: 78670F  DOI: 10.1117/12.872486  Published: 2011  

Abstract: Light field photography captures 4D radiance information of a scene. Digital refocusing and digital correction of aberrations could be done after the photograph is taken. However, capturing 4D light field is costly and tradeoffs between different image quality metrics should be made and evaluated. This paper explores the effects of light field photography on image quality by quantitatively evaluating some basic criteria for an imaging system. A simulation approach was first developed by ray-tracing a designed light field camera. A standard testing chart followed by ISO 12233 was provided as the input scene. A sequence of light field raw images were acquired and processed by light field rendering methods afterwards. Through-focus visual resolution and MTF were calculated and analyzed. As a comparison, the same tests were taken for the same main lens system as the results of conventional photography. An experimental light field system was built up and its performance was tested. This work helps better understanding the pros and cons of light field photography in contrast with conventional imaging methods and perceiving the way to optimize the joint digital-optical design of the system.

Accession Number: WOS:000291692500014

Conference Title: Conference on the Image Quality and System Performance VIII

Conference Date: JAN 24-26, 2011

Conference Location: San Francisco, CA

Conference Sponsors: Soc Imaging Sci & Technol (IS&T), SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-81948-404-8

Record 28 of 111

Title: Design and application of TEC controller Using in CCD camera

Author(s): Gan, YQ (Gan Yu-quan); Ge, W (Ge Wei); Qiao, WD (Qiao Wei-dong); Lu, D (Lu Di); Lv, J (Lv Juan)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 81961E  DOI: 10.1117/12.900697  Published: 2011  

Abstract: Thermoelectric cooler (TEC) is a kind of solid hot pump performed with Peltier effect. And it is small, light and noiseless. The cooling quantity is proportional to the TEC working current when the temperature difference between the hot side and the cold side keeps stable. The heating quantity and cooling quantity can be controlled by changing the value and direction of current of two sides of TEC. So, thermoelectric cooling technology is the best way to cool CCD device. The E2V's scientific image sensor CCD47-20 integrates TEC and CCD together. This package makes easier of electrical design. Software and hardware system of TEC controller are designed with CCD47-20 which is packaged with integral solid-state Peltier cooler. For hardware system, 80C51 MCU is used as CPU, 8-bit ADC and 8-bit DAC compose of closed-loop controlled system. Controlled quantity can be computed by sampling the temperature from thermistor in CCD. TEC is drove by MOSFET which consists of constant current driving circuit. For software system, advanced controlled precision and convergence speed of TEC system can be gotten by using PID controlled algorithm and tuning proportional, integral and differential coefficient. The result shows: if the heat emission of the hot side of TEC is good enough to keep the temperature stable, and when the sampling frequency is 2 seconds, temperature controlled velocity is 5 degrees C/min. And temperature difference can reach -40 degrees C controlled precision can achieve 0.3 degrees C. When the hot side temperature is stable at 25 degrees C, CCD temperature can reach -23 degrees C, and thermal noise of CCD is less than 1e-/pix/s. The controlled system restricts the dark-current noise of CCD and increases SNR of the camera system.

Accession Number: WOS:000295078500050

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 29 of 111

Title: Universal No Reference Image Quality Assessment Metrics Based on Local Dependency

Author(s): Gao, F (Gao, Fei); Gao, XB (Gao, Xinbo); Li, XL (Li, Xuelong); Tao, DC (Tao, Dacheng); He, LH (He, Lihuo); Lu, W (Lu, Wen)

Book Group Author(s): IEEE

Source: 2011 FIRST ASIAN CONFERENCE ON PATTERN RECOGNITION (ACPR)  Pages: 298-302  Published: 2011  

Abstract: No reference image quality assessment (NR-IQA) is to evaluate image quality blindly without the ground truth. Most of the emerging NR-IQA algorithms are only effective for some specific distortion. Universal metrics that can work for various categories of distortions have hardly been explored, and the algorithms available are not fully adequate in performance. In this paper, we study the local dependency (LD) characteristic of natural images, and propose two universal NR-IQA metrics: LD global scheme (LD-GS) and LD two-step scheme (LD-TS). We claim that the local dependency characteristic among wavelet coefficients is disturbed by various distortion processes, and the disturbances are strongly correlated to image qualities. Experimental results on LIVE database II demonstrate that both the proposed metrics are highly consistent with the human perception and outpace the state-of-the-art NR-IQA indexes and some full reference quality indicators for diverse distortions and across the entire database.

Accession Number: WOS:000313291600061

Conference Title: 1st Asian Conference on Pattern Recognition (ACPR)

Conference Date: NOV 28-28, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Inst Elect & Elect Engn (IEEE)

Author Identifiers:

ISBN: 978-1-4577-0121-4; 978-1-4577-0122-1

Record 30 of 111

Title: Development of low readout noise scientific CCD camera for lunar astronomical observation

Author(s): Ge, W (Ge Wei); Gan, YQ (Gan Yu-quan); Wang, H (Wang Hong); Xu, GZ (Xu Guang-zhou)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 81961D  DOI: 10.1117/12.900695  Published: 2011  

Abstract: High sensitivity and SNR are requested in lunar astronomical observation in order to get dark and feeble objects. Scientific CCD Cameras used in lunar astronomical observation usually have following characteristics: high quantum efficiency, wide spectral response, good photometric linearity and wide dynamic range. However, extremely low readout noise is usually a key indicator of the camera. A CCD camera, based on E2V's back-illuminated ultraviolet-enhanced scientific grade AIMO image sensor, has been designed for lunar astronomical observation. Four major kinds of electrical optimal design are presented in order to reduce the readout noise of the camera. The experiment result shows that: in the 200K pix/s of the pixel clock, the camera system gain is 1.83e-/ADU, and the readout noise is less than 6e-.

Accession Number: WOS:000295078500049

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 31 of 111

Title: Interferogram Spectrum Reconstruction Using Modern Spectral Estimation

Author(s): Han, G (Han Gang); Liu, XB (Liu Xue-bin); Hu, BL (Hu Bing-liang); Wang, CL (Wang Cai-ling)

Book Group Author(s): IEEE

Source: 2011 INTERNATIONAL CONFERENCE ON ELECTRONICS, COMMUNICATIONS AND CONTROL (ICECC)  Pages: 2112-2115  Published: 2011  

Abstract: In this paper, we first discussed basic spectral estimation concepts and algorithms, then pointed out that the conventional spectrum reconstruction algorithm is virtually the same with Blackman-Tukey (BT) algorithm in spectral estimation. Then we use two different method (Auto-Regressive parametric model and eigenvector spectral estimation method) to reconstruct light spectrum from interferogram, and compared the results with conventional method for spectrum reconstruction. From the comparison we concluded that the modern spectrum estimation methods can well be adopted in Fourier Transform (FT) spectrum reconstruction and would perform excellent, especially when to get higher spectrum resolution from a short series of data recorded. Later we discussed the disadvantages and restrictions of the two methods used in the simulation. From these results and discussions, we suggested to implement various new spectral estimation method in FT spectrum reconstruction to get better performance.

Accession Number: WOS:000298656802056

Conference Title: IEEE International Conference on Electronics, Communications and Control (ICECC)

Conference Date: SEP 09-11, 2011

Conference Location: Ningbo, PEOPLES R CHINA

Conference Sponsors: IEEE, Ningbo Univ, Key Lab Sci & Tech Natl Def (KLSTND)

ISBN: 978-1-4577-0321-8

Record 32 of 111

Title: Synthesis and Photoluminescence of Cr-doped Rod-like ZnO Particles by Hydrothermal Method

Author(s): Hang, LM (Hang, Lianmao); Zhang, ZY (Zhang, Zhiyong); Yan, JF (Yan, Junfeng)

Edited by: Liu SQ; Zuo M

Source: EMERGING FOCUS ON ADVANCED MATERIALS, PTS 1 AND 2  Book Series: Advanced Materials Research  Volume: 306-307  Pages: 176-+  DOI: 10.4028/www.scientific.net/AMR.306-307.176  Published: 2011  

Abstract: Cr-doped rod-like ZnO particles with nominal 3 at% doping concentration were synthesized by hydrothermal method. The structural and optical properties of the sample were investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and photoluminescence (PL). The results show that the as-synthesized product is of hexagonal wurtzite structure without metallic Cr or other secondary phases and the morphology of the ZnO particles is rod shaped. The room-temperature PL spectrum of the Cr-doped rod-like ZnO particles exhibits a strong blue emission at 440nm and two weak emission bands centered at 410nm and 565nm, respectively.

Accession Number: WOS:000309192200036

Conference Title: 1st International Congress on Advanced Materials

Conference Date: MAY 13-16, 2011

Conference Location: Univ Jinan, Jinan, PEOPLES R CHINA

Conference Sponsors: Int Assoc Adv Mat, Univ Jinan, Journal Inorgan & Organometall Polymers & Mat, Adv Mat Letters, Chinese Ceram Soc, Shandong Univ, Minist Educ, Key Lab Liquid Solid Structural Evolut & Proc Mat

Conference Host: Univ Jinan

Author Identifiers:

ISSN: 1022-6680

ISBN: 978-3-03785-204-0

Record 33 of 111

Title: A new processing way for helicoid reflective mirror

Author(s): Hu, SL (Hu, Shaolei); Xie, YJ (Xie, Yongjun); Zhao, X (Zhao, Xin)

Edited by: Gao J

Source: ADVANCED MANUFACTURING TECHNOLOGY, PTS 1-3  Book Series: Advanced Materials Research  Volume: 314-316  Pages: 94-97  DOI: 10.4028/www.scientific.net/AMR.314-316.94  Part: 1-3  Published: 2011  

Abstract: A novel processing way for the continuous helicoid reflective mirrors is proposed. We use an intelligent oven to accurately control the glass temperature and successfully produce a helicoid reflective mirror in B270 glass. Then we test the shape and optical properties of the helicod reflective mirror via the three-coordinate instrument measuring and interference experiment.

Accession Number: WOS:000303483500018

Conference Title: International Conference on Advanced Design and Manufacturing Engineering (ADME 2011)

Conference Date: SEP 16-18, 2011

Conference Location: Guangzhou, PEOPLES R CHINA

Conference Sponsors: Guangdong Univ Technol, Huazhong Univ Sci & Technol, Hong Kong Univ Sci & Technol, Hong Kong Polytechn Univ, Univ Nottingham

ISSN: 1022-6680

ISBN: 978-3-03785-215-6

Record 34 of 111

Title: The design and characteristics analysis of lunar based Two Axes gimbal with high reliability

Author(s): Huang, J (Huang Jing); Liu, ZH (Liu Zhao-hui); Li, ZG (Li Zhi-guo); Chang, ZY (Chang Zhi-yuan); Shi, X (Shi Xin)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 81960L  DOI: 10.1117/12.899596  Published: 2011  

Abstract: In order to meet the requirements of lunar based astronomical observation which includes three different observing modes: specific celestial body observations, calibration observations, sky surveys, the two Axes gimbal is designed to guarantee the telescope can point and listen to a exact point in the sky. Due to the harsh environment on the moon and space payload weight limit, based on lightweight design method, such as structure optimization and rational material selection, the weight of gimbal is greatly reduced without decrease of rigidity and strength. In addition, because of the usage of external rotor mechanism for vertical shaft, the system's first order mode along the emission direction is greatly improved. On the other hand, The shaft with one fixed end and another free end is adopted to reduce the deflection between its two larger span ends. Furthermore, the shaft stuck at both ends due to temperature changes on the moon is eliminated by rational determining the clearance of deep groove ball bearings. Experiments show that, the system's first order resonant frequency can reach 81HZ, and the mechanism works well from - 25 . . to +60 . . without stuck phenomenon occured. So, because of the adoption of approaches mentioned above, the mechanism has good mechanical properties, such as high reliability and light weight.

Accession Number: WOS:000295078500021

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 35 of 111

Title: The competition of the retraction and capillary forces during the DNA molecules moving within channels

Author(s): Hui, D (Hui, Dan); Wang, KG (Wang, Kaige); Zhao, XJ (Zhao, Xiaojuan); Qiao, QW (Qiao, Qiwei); Li, D (Li, Dan); Dang, WJ (Dang, Weijun); Wan, Y (Wan, Yun); Bai, JT (Bai, Jintao)

Edited by: Wang XH

Source: MEMS/NEMS NANO TECHNOLOGY  Book Series: Key Engineering Materials  Volume: 483  Pages: 331-+  DOI: 10.4028/www.scientific.net/KEM.483.331  Published: 2011  

Abstract: The stretching processes of DNA molecules on the hydrophobic planar surfaces and the dynamic processes of DNA molecules moving into the micro- and nano-channels were studied with the fluorescence microscopy associated with the EMCCD in detail. The results demonstrated the ordered stretching of single DNA molecules under the effects of hydrophobic force, which is one of the main force should be considered when the DNA molecules are driven into channels or other nano-structure patterns.

Accession Number: WOS:000308677000064

Conference Title: 12th Annual Conference of the Chinese Society of Micro-Nano Technology/2nd International Conference of Chinese Society of Micro-Nano Technology

Conference Date: OCT 22-24, 2010

Conference Location: Xian, PEOPLES R CHINA

ISSN: 1013-9826

Record 36 of 111

Title: Optimizing the Phase-Matching Parameters of a BIBO Crystal for Ultrafast Spontaneous Parametric Down Conversion

Author(s): Huo, GW (Huo, Guang-Wen); Zhang, TY (Zhang, Tong-Yi); Wan, RG (Wan, Ren-Gang); Zhang, MZ (Zhang, Mei-Zhi); Cheng, GH (Cheng, Guang-Hua); Zhao, W (Zhao, Wei)

Edited by: Kasper E; Yu J; Li X; Zhang X; Xia J; Chu J; Dong Z; Hu B; Shen Y

Source: PHOTONICS AND OPTOLECTRONICS MEETINGS (POEM) 2011: OPTOELECTRONIC DEVICES AND INTEGRATION  Book Series: Proceedings of SPIE  Volume: 8333  Article Number: 833313  DOI: 10.1117/12.918955  Published: 2011  

Abstract: We analyze and optimize the parameters of the Type I spontaneous parametric down-conversion (SPDC) process in BiB3O6 (BIBO) crystal directly from calculations. This can be used to construct a system to generate ultrafast entangled photon pairs, which play an important role in quantum communication, quantum positioning, and quantum clock synchronization. Our work on the problem makes it clear that the optimal phase matching orientation in the process of SPDC is a key mechanism in the BIBO crystal in a way that appears not to have been appreciated before. In the case of omega = 0.405 mu m, the numerical results of the optimization parameters at room temperature (295 K) are theta = 152.00 degrees, phi = 90 degrees, and d(eff) = 3.48 pm/V. Finally, we use a pair of 0.6 mm thick biaxial BIBO crystals to construct an ultrafast entangled photon source, where the crystals are stacked together perpendicularly and pumped by a 405 nm pulsed laser doubling from a Tsunami mode-locked Ti:sapphire laser.

Accession Number: WOS:000301278700039

Conference Title: 4th International Photonics and Optoelectronics Meetings (POEM) - Optoelectronic Devices and Integration/10th International Conference on Photonics and Imaging in Biology and Medicine (PIBM)

Conference Date: NOV 02-05, 2011

Conference Location: Wuhan, PEOPLES R CHINA

Conference Sponsors: Wuhan Natl Lab Optoelect, Huazhong Univ Sci & Technol, China Hubei Prov Sci & Technol Dept, Wuhan E Lake Natl Innovat Model Zone (Opt Valley China, OVC), Opt Soc, Hubei Prov Foreign Experts Affairs Bur, Natl Nat Sci Fdn Comm (NNSFC)

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-81948-990-6

Record 37 of 111

Title: The novel stable control scheme of the light source power in the closed-loop fiber optic gyroscope

Author(s): Ji, ZX (Ji, Zhongxiao); Ma, CW (Ma, Caiwen)

Edited by: Ye C; Wang ZL; Zhou B

Source: 3RD INTERNATIONAL PHOTONICS AND OPTOELECTRONICS MEETINGS (POEM 2010)  Book Series: Journal of Physics Conference Series  Volume: 276  Article Number: 012127  DOI: 10.1088/1742-6596/276/1/012127  Published: 2011  

Abstract: The light source power stability of the Fiber-Optic Gyroscope (FOG) affects directly the scale factor and bias stability of FOG. The typical control scheme of the light source power employs an additional photodetector to detect the output power of the light source. When the fiber loss of FOG varied due to the temperature change, the light power in the additional photodetector did not indicate this change, which decreased the control effect. The spike pulse overlapping on the gyro signal denotes potentially the change of the light power and fiber loss. In the novel scheme, the spike pulse is extracted from the gyro signal, and is transformed into the square wave by the differential circuit. According to the change of the square wave amplitude, FOG adjusts the bias current of the light source to keep the stable light power in the signal photodetector. It is a simple and low-cost scheme without an additional photodetector.

Accession Number: WOS:000289293700127

Conference Title: 3rd International Photonics and OptoElectronics Meetings

Conference Date: NOV 02-05, 2010

Conference Location: Wuhan, PEOPLES R CHINA

ISSN: 1742-6588

eISSN: 1742-6596

Record 38 of 111

Title: Design of Catadioptric Middle Infrared Continuous Zoom Lens for Uncooled Infrared Detector

Author(s): Jiang, K (Jiang Kai); Zhou, SZ (Zhou Si-zhong); Duan, J (Duan Jing); Wang, YB (Wang Yan-bin); Zhang, HJ (Zhang Heng-jin)

Edited by: Puschell JJ; Chu J; Gong H; Lu J

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: ADVANCES IN INFRARED IMAGING AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8193  Article Number: 81931U  DOI: 10.1117/12.900193  Published: 2011  

Abstract: For uncooled 320x240 infrared detector, a catadioptric middle infrared continuous zoom lens is presented. The optical system is divided into three segments. First of all, a reflective system is designed as the front system. Then the continuous zoom lens which matches with the reflective system as the back system is designed. The conversed back system is assembled at the first imaging of the optical system with the reflective system. A continuous variable magnification catadiootric telescope is obtained. Projection objective is designed based on the telescope lastly. To ensure the imaging quality of the system, the whole system is optimized with the CODE V software. The system can realize 200mm similar to 800mm continuous zoom. The designed result shows the system has the advantages of simple structure, short zoom path and smooth zoom locus, high image quality and approached or reached to the diffraction limit.

Accession Number: WOS:000297573900065

Conference Title: 4th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Advances in Infrared Imaging and Applications

Conference Date: 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Astronaut, Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab

ISSN: 0277-786X

ISBN: 978-0-81948-834-3

Record 39 of 111

Title: Deployment precision measurement modeling of a deployable space telescope based on tape springs

Author(s): Li, C (Li, Chuang); Feng, XG (Feng, Xuegui)

Edited by: Fan KC; Lu RS; Song M

Source: SEVENTH INTERNATIONAL SYMPOSIUM ON PRECISION ENGINEERING MEASUREMENTS AND INSTRUMENTATION  Book Series: Proceedings of SPIE  Volume: 8321  Article Number: 83212R  DOI: 10.1117/12.905134  Published: 2011  

Abstract: Tape springs have many advantages to develop spaced-based deployable systems because of their simple structures, light weights, high stiffness, and the abilities of self-deploy and self-lock. Their applications in deployable space structures make the spaced-based systems fulfill the requirements of light weight and compact launching volume. A new kind of deployable space telescope under research uses tape springs as the support structure of secondary mirror. Before launch, the support structure of secondary mirror is folded, and deployed when on orbit. In order to achieve near diffraction limited imaging quality, the deployment precision must reach the level consistent with the optical compensation system. We designed an accurate measuring system based on position sensitive detectors (PSDs) to measure the deployment precision. The measuring system includes 3 laser diodes, 3 two-dimensional PSDs around the primary mirror of the deployable telescope, and 3 small mirrors around the secondary mirror. The equations linking the PSD readings and the six-degree-of-freedom displacement of the secondary mirror were deduced. With these equations, the deployment errors can be resolved.

Accession Number: WOS:000298381400099

Conference Title: 7th International Symposium on Precision Engineering Measurements and Instrumentation (ISPEMI)

Conference Date: AUG 07-11, 2011

Conference Location: Lijiang, PEOPLES R CHINA

Conference Sponsors: Int Comm Measurements & Instrumentat, Natl Nat Sci Fdn China, Hefei Univ Technol, Beijing Informat Sci & Technol Univ, Natl Taiwan Univ, Harbin Inst Technol

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81947-940-2

Record 40 of 111

Title: Application of carbon-carbon composite for load-carrying cylinder in lunar optical telescope

Author(s): Li, F (Li, Fu); Ruan, P (Ruan, Ping); Li, T (Li, Ting); Xu, GZ (Xu, Guang-zhou); Lu, D (Lu, Di); Pan, HJ (Pan, Hai-jun)

Edited by: Zarnecki JC; Nardell CA; Shu R; Yang J; Zhang Y

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: SPACE EXPLORATION TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8196  Article Number: 81961G  DOI: 10.1117/12.900738  Published: 2011  

Abstract: The carbon-carbon composite (CCC) was applied in order to design and fabricate much more predominant lunar optical telescope (LOT). The fabricating technics of CCC and machining technics of load-carrying cylinder assembly are introduced. The density of CCC is 1.73g/cm(3), and the coefficient of thermal expansion is 0.5 x 10(-6)/degrees C. The thermal adaptability of LOT was analyzed, the operating temperature of LOT will be improved to -20 degrees C similar to +40 degrees C. that the carbon-carbon cylinder is used. Finite element analysis of LOT with CCC cylinder was performed, and the results show that the first frequency of LOT is 185Hz. The machining and assembling of LOT have been performed. The vibration testing has been accomplished and the testing results are consistent with finite element analysis. The testing results show that load-carrying cylinder of CCC can stand the mechanical proof. All analysis and testing indicate that CCC can be competent for LOT.

Accession Number: WOS:000295078500052

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Space Exploration Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-837-4

Record 41 of 111

Title: Modulation Transfer Function Online Compensation of Imaging System in Remote Sensing satellite

Author(s): Li, HJ (Li Huijuan); Qu, YS (Qu Youshan); Cheng, P (Cheng Pan)

Book Group Author(s): IEEE

Source: 2011 INTERNATIONAL CONFERENCE ON ELECTRONICS, COMMUNICATIONS AND CONTROL (ICECC)  Pages: 3821-3824  Published: 2011  

Abstract: According to the theory of Fourier Optics, an optical remote sensing imaging system is an optical diffraction-limited system and a low-pass filter. CCD or CMOS imaging sensors are low-pass filters as well. Thus, when the optical information of an object or a scene with abundant high-frequency components passes through the remote sensing optical imaging system, the profuse middle-frequency information is attenuated and the rich high-frequency information is lost, which will blur the captured remote sensing images. To solve this problem of the imaging system in the remote sensing satellite, an analog on-line compensating method of the Modulation Transfer Function (MTF) in the imaging system is proposed in this paper. The established method was realized by a hardware analog circuit placed before the A/D converter, which is composed of adjustable low-pass filters with a calculated value of quality factor Q. All the theory analysis, experiment results and application in the remote sensing imaging system of the satellite showed that the proposed method and the realized compensating circuit are capable of improving the MTF of imaging systems and enhancing the middle frequency of blurred video images.

Accession Number: WOS:000298656803226

Conference Title: IEEE International Conference on Electronics, Communications and Control (ICECC)

Conference Date: SEP 09-11, 2011

Conference Location: Ningbo, PEOPLES R CHINA

Conference Sponsors: IEEE, Ningbo Univ, Key Lab Sci & Tech Natl Def (KLSTND)

ISBN: 978-1-4577-0321-8

Record 42 of 111

Title: The Parallel Computing and Realization of Ambiguity Resolution Algorithms for Pulsar Navigation System

Author(s): Li, JX (Li, Jianxun); Zhao, BS (Zhao, Baosheng); Ke, XZ (Ke, Xizheng)

Book Group Author(s): SciRes

Source: CSNC 2011: 2ND CHINA SATELLITE NAVIGATION CONFERENCE, VOLS 1-3  Pages: 1562-1567  Published: 2011  

Abstract: Algorithms of ambiguity resolution for pulsar navigation mainly based on the idea of searching by traverse in all the possible ambiguity values, which is of high computing complexity. The currently available algorithms can't fundamentally reduce the complexity of the ambiguity problem, for the reason that people were still confined to the serial computing mode of traverse. In consideration of the core of ambiguity resolution method is to carry out the same computation procedure and the same discrimination processing for different tried ambiguity vectors, this paper put forward that using the parallel computing strategy to promote the real-time performance of ambiguity resolution. Since GPU is one of the Multi-core processor, this paper use GPU and CUDA as hardware and software architecture for parallel computing, to make parallelization design and realization. Simulation test on the simulation system of pulsar navigation was finished. Result show that parallel method can greatly promote real-time performance of ambiguity resolution, moreover depending on the parallel capability of specialized hardware, each resolution algorithm have little difference in run time. So compared with parallel mode, the optimization of searching algorithms before strived for is seemingly unimportant. The idea in the paper also provides a meaningful reference for other algorithms in pulsar navigation.

Accession Number: WOS:000397540100294

Conference Title: 2nd China Satellite Navigation Conference (CSNC 2011)

Conference Date: MAY 18-20, 2011

Conference Location: Shanghai, PEOPLES R CHINA

Author Identifiers:

ISBN: 978-1-935068-73-0

Record 43 of 111

Title: Optical imaging based on compressive sensing

Author(s): Li, S (Li Shen); Ma, CW (Ma Cai-wen); Xia, AL (Xia Ai-li)

Edited by: Ikeda M; Wu N; Zhang G; Ai K

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: ADVANCES IN IMAGING DETECTORS AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8194  Article Number: 81942H  DOI: 10.1117/12.900691  Published: 2011  

Abstract: Compressive Sensing (CS) is a new sampling framework that provides an alternative to the well-known Shannon sampling theory. The basic idea of CS theory is that a signal or image, unknown but supposed to be sparse or compressible in some basis, can be subjected to fewer measurements than the nominal number of pixels, and yet be accurately reconstructed. By designing optical sensors to measure inner products between the scene and a set of test functions according to CS theory, we can use sophisticated computational methods to infer critical scene structure and content for significantly economizing the resources in data acquisition store and transmit. In this paper, we investigate how CS can provide new insights into optical imaging including optical devices. We first give a brief overview of the CS theory and reviews associated fast numerical reconstruction algorithms. Next, this paper explores the potential of several different physically realizable optical systems based on CS principles. In the end, we briefly discuss possible implication in the areas of data compression and optical imaging.

Accession Number: WOS:000295076300088

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Advances in Imaging Detectors and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vis Lab, Chinese Soc Astronaut, SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-81948-835-0

Record 44 of 111

Title: Micro/Nano displacement measurement using sub-pixel DSCM

Author(s): Li, XZ (Li Xin-zhong); Tai, YP (Tai Yu-ping); Nie, ZG (Nie Zhao-gang); Zhang, LP (Zhang Li-ping); Wang, YJ (Wang Ya-jun)

Edited by: Amzajerdian F; Chen W; Gao C; Xie T

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: LASER SENSING AND IMAGING AND BIOLOGICAL AND MEDICAL APPLICATIONS OF PHOTONICS SENSING AND IMAGING  Book Series: Proceedings of SPIE  Volume: 8192  Article Number: 819213  DOI: 10.1117/12.899580  Part: 1  Published: 2011  

Abstract: A selection method of subset size in sub-pixel displacement registration is proposed. The algorithm principle of interpolation, fitting of distribution of the correlation coefficients and gradient-based methods are introduced. Using computer-simulated speckle images, their precision and efficiency depending on the subset size are studied. The optimal method and subset size are presented in various measurement ranges, which offer measuring bases for sub-pixel in DSCM.

Accession Number: WOS:000295055800038

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Laser Sensing and Imaging and Biological and Medical Applications of Photonics Sensing and Imaging

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Photoelect Technol Profess Comm, CSA, Tianjin Jinhang Inst Tech Phys, CASIC, Sci & Technol Low Light Level Night Vision Lab, Chinese Soc Astronaut

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-0-81948-833-6

Record 45 of 111

Title: Optimizing Design of Real-time Spatial Moving Target Tracking System

Author(s): Liang, DS (Liang, Dong Sheng); Liu, ZH (Liu, Zhao Hui); Liu, W (Liu, Wen)

Edited by: Zhang LC; Zhang CL; Chen Z

Source: MECHATRONICS AND MATERIALS PROCESSING I, PTS 1-3  Book Series: Advanced Materials Research  Volume: 328-330  Pages: 2234-2237  DOI: 10.4028/www.scientific.net/AMR.328-330.2234  Published: 2011  

Abstract: Achieving the detection and tracking of moving targets has been widely applied in all fields of today's society. Because of the shortcomings of traditional video tracking system, this paper proposes a novel method for designing video processing system based on hardware design of FPGA and DSP, and moving target in video can be detected and tracked by this system. In this system, DSP as the core of the system, it mainly completes the processing algorithms of video and image data, FPGA as a coprocessor, responsible for the completion of the processing of external data and logic. The hardware structure, link configuration, program code and other aspects of system are optimized. Finally, through the experiment, the input frame rate of video is 40frames/s, and the image resolution is 512pixels x 512pixels, median 16bites quantitative image sequence, the system can complete the relevant real-time detection and tracking algorithm and extract targets position of image sequences correctly. The results show that the advantage is that this system has powerful operation speed, real time, high accuracy and stability.

Accession Number: WOS:000306989601125

Conference Title: International Conference on Mechatronics and Materials Processing (ICMMP 2011)

Conference Date: NOV 18-20, 2011

Conference Location: Guangzhou, PEOPLES R CHINA

Conference Sponsors: Guangzhou Univ, Univ New S Wales, Zhejiang Univ, Xian Jiaotong Univ

Author Identifiers:

ISSN: 1022-6680

ISBN: 978-3-03785-238-5

Record 46 of 111

Title: The Extracting System Design of Small Dim Targets in Complex Background

Author(s): Liang, DS (Liang, Dong Sheng); Liu, ZH (Liu, Zhao Hui); Liu, W (Liu, Wen)

Edited by: Zhang LC; Zhang CL; Chen Z

Source: MECHATRONICS AND MATERIALS PROCESSING I, PTS 1-3  Book Series: Advanced Materials Research  Volume: 328-330  Pages: 2324-2327  DOI: 10.4028/www.scientific.net/AMR.328-330.2324  Published: 2011  

Abstract: For the moving small dim targets in visible image sequences with low SNR and complex background, whose contained characters are simple and poor, they are extracted difficultly. This paper proposes a new method to detect and extract positions of small dim moving targets. According to the features of moving targets, in a very short time interval, the target trajectory is considered as a straight line approximately. Firstly, it makes use of threshold segmentation methods to extract the positions of targets in each frame, then building the motion line equations after the joint of multi-frame processing results. Finally, the position of small dim targets are detected out and extracted, and false targets are eliminated accurately. Hardware system was designed and the algorithm is implemented on hardware systems successfully. The experiment results show related functions of the system and extracting algorithm is feasible, the system is stable and has a strong process ability, which can effectively detect and extract small and dim target in complex background correctly.

Accession Number: WOS:000306989601145

Conference Title: International Conference on Mechatronics and Materials Processing (ICMMP 2011)

Conference Date: NOV 18-20, 2011

Conference Location: Guangzhou, PEOPLES R CHINA

Conference Sponsors: Guangzhou Univ, Univ New S Wales, Zhejiang Univ, Xian Jiaotong Univ

Author Identifiers:

ISSN: 1022-6680

ISBN: 978-3-03785-238-5

Record 47 of 111

Title: Image enhancement techniques used for THz imaging

Author(s): Liang, YQ (Liang, Yuqing); Fan, WH (Fan, Wenhui); Xue, B (Xue, Bing)

Edited by: Zhang XC; Yao J; Zhang C; Wang Z

Source: INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2011: TERAHERTZ WAVE TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 8195  Article Number: 819515  DOI: 10.1117/12.900775  Published: 2011  

Abstract: Terahertz (THz) radiation has been widely applied in the areas of spectroscopy, sensing and imaging. With the advancement of THz technologies, THz imaging has been progressed significantly and has huge potential applications in medical diagnosis, environmental control, chemical and biological identification. In the past, people mainly focused on overcoming the obstacles in the hardware, such as the limitation of resolution, accuracy and speed in THz imaging system. In this paper, image enhancement techniques are employed to enhance the contrast and get the better profile of THz image. Our results clearly demonstrate that digital image processing techniques can suppress noise effectively, extract target edges robustly, and therefore improve the quality of THz image.

Accession Number: WOS:000295077600040

Conference Title: International Symposium on Photoelectronic Detection and Imaging 2011 - Terahertz Wave Technologies and Applications

Conference Date: MAY 24-26, 2011

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Photoelect Technol Professional Comm, CSA, Tianjin Jinhang Inst Techn Phys, CASIC, Sci & Technol Low Light Level Night Vision Lab, Chinese Soc Astronaut, SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-81948-836-7

Record 48 of 111

Title: Fuzzy Logic Controller Design Based on Genetic Algorithm for DC Motor

Author(s): Liu, CJ (Liu, Chun-juan); Li, BX (Li, Bian-xia); Yang, XX (Yang, Xiao-xu)

Book Group Author(s): IEEE

Source: 2011 INTERNATIONAL CONFERENCE ON ELECTRONICS, COMMUNICATIONS AND CONTROL (ICECC)  Pages: 2662-2665  Published: 2011  

Abstract: This paper propose a genetic based fuzzy logic controller to regulate the speed of separately excited DC motor. The fuzzy membership function and rules are optimized based on genetic algorithm. The DC motor speed control system is modeled and simulated in MATLAB/SIMULINK. Simulation results show that the optimized fuzzy logic controller not only has no overshoot, minimum settling times and vibrations, but also demonstrate high performance for real-time control over a wide range of operating conditions.

Accession Number: WOS:000298656802197

Conference Title: IEEE International Conference on Electronics, Communications and Control (ICECC)

Conference Date: SEP 09-11, 2011

Conference Location: Ningbo, PEOPLES R CHINA

Conference Sponsors: IEEE, Ningbo Univ, Key Lab Sci & Tech Natl Def (KLSTND)

ISBN: 978-1-4577-0321-8

Record 49 of 111

Title: Compressed Hyperspectral Image Sensing with Joint Sparsity Reconstruction

Author(s): Liu, HY (Liu, Haiying); Li, YS (Li, Yunsong); Zhang, J (Zhang, Jing); Song, J (Song, Juan); Lv, P (Lv, Pei)

Edited by: Huang B; Plaza AJ; Thiebaut C

Source: SATELLITE DATA COMPRESSION, COMMUNICATIONS, AND PROCESSING VII  Book Series: Proceedings of SPIE  Volume: 8157  Article Number: 815703  DOI: 10.1117/12.895425  Published: 2011  

Abstract: Recent compressed sensing (CS) results show that it is possible to accurately reconstruct images from a small number of linear measurements via convex optimization techniques. In this paper, according to the correlation analysis of linear measurements for hyperspectral images, a joint sparsity reconstruction algorithm based on interband prediction and joint optimization is proposed. In the method, linear prediction is first applied to remove the correlations among successive spectral band measurement vectors. The obtained residual measurement vectors are then recovered using the proposed joint optimization based POCS (projections onto convex sets) algorithm with the steepest descent method. In addition, a pixel-guided stopping criterion is introduced to stop the iteration. Experimental results show that the proposed algorithm exhibits its superiority over other known CS reconstruction algorithms in the literature at the same measurement rates, while with a faster convergence speed.

Accession Number: WOS:000297669800003

Conference Title: Conference on Satellite Data Compression, Communications, and Processing VII

Conference Date: AUG 23-24, 2011

Conference Location: San Diego, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-0-81948-767-4

Record 50 of 111

Title: Progress of NUV and FUV MCP-based photon-counting imaging detectors