Record 1 of 125

Title: A level set method with shape priors by using locality preserving projections

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

Source: NEUROCOMPUTING  Volume: 170  Pages: 188-200  DOI: 10.1016/j.neucom.2014.07.086  Published: DEC 25 2015  

Abstract: A novel level set method (LSM) with the constraint of shape priors is proposed to implement a selective image segmentation. Firstly, the shape priors are aligned by using image moment to deprive the spatial related information. Secondly, the aligned shape priors are projected into the subspace expanded by using locality preserving projection to measure the similarity between the shapes. Finally, a new energy functional is built by combing data-driven and shape-driven energy items to implement a selective image segmentation method. We assess the proposed method and some representative LSMs on the synthetic, medical and natural images, the results suggest that the proposed one is superior to the pure data-driven LSMs and the representative LSMs with shape priors. (C) 2015 Elsevier B.V. All rights reserved.

Accession Number: WOS:000361256000019

Conference Title: International Conference on Intelligent Science and Intelligent Data Engineering (IScIDE)

Conference Date: JUL 31-AUG 02, 2013

Conference Location: Beijing, PEOPLES R CHINA

Author Identifiers:

ISSN: 0925-2312

eISSN: 1872-8286

Record 2 of 125

Title: Hydrothermal synthesis of TiO₂ nanostructure films and their photoelectrochemical properties

Author(s): Miao, H (Miao, Hui); Hu, XY (Hu, Xiaoyun); Fan, J (Fan, Jun); Li, CB (Li, Chaoben); Sun, Q (Sun, Qian); Hao, YY (Hao, Yuanyuan); Zhang, GW (Zhang, Guowei); Bai, JT (Bai, Jintao); Hou, X (Hou, Xun)

Source: APPLIED SURFACE SCIENCE  Volume: 358  Pages: 418-424  DOI: 10.1016/j.apsusc.2015.08.212  Part: A  Published: DEC 15 2015  

Abstract: In this study, anatase TiO2 nanostructured films were successfully prepared via Ti foil-assisted hydrothermal synthesis method without any surfactants. With the increase of hydrothermal time from 3 to 12 h, the surface morphologies of the films changed from nanotubes to nanoflowers and the thickness of the films increased from 2.5 to 4.2 mu m. The nanoflowers were seated on a layer of oriented nanotubes and consisted of nanosheets. Both nanotubes and nanosheets were multi-walled, comprising interconnected [TiO6] octahedra. Ti foil and acid-treated Ti foil both formed pieces of thin films on the surface with nanotubes and nanoflowers, respectively. Photoelectrochemistry tests showed that the photocurrent response of the nanotube film was nearly 13.8 mu A/cm(2), which was approximately three times higher than that of nanoflowers film. This indicates that the nanotubes more successfully transferred electrons to the surface of the film as a result of nanotubes providing direct pathways for electrons from the point of injection to the Ti foil electrode. The ultraviolet (UV)-visible-near infrared (NIR) absorption spectra indicated that the nanotube film had a narrower band gap as compared to the nanoflower film. In other words, a relatively low hydrothermal treatment temperature or relatively short hydrothermal treatment time is better for preparing excellent photocurrent response films. (C) 2015 Elsevier B.V. All rights reserved.

Accession Number: WOS:000366220400052

Conference Title: 1st International Workshop on Graphene and C3N4-based Photocatalysts (IWGCP)

Conference Date: JUN 05-08, 2015

Conference Location: Wuhan Univ Technology, Wuhan, PEOPLES R CHINA

Conference Sponsors: Jianghan Univ, Changsha Univ

Conference Host: Wuhan Univ Technology

Author Identifiers:

ISSN: 0169-4332

eISSN: 1873-5584

Record 3 of 125

Title: Projection-Based NMF for Hyperspectral Unmixing

Author(s): Yuan, Y (Yuan, Yuan); Feng, YC (Feng, Yachuang); Lu, XQ (Lu, Xiaoqiang)

Source: IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING  Volume: 8  Issue: 6  Special Issue: SI  Pages: 2632-2643  DOI: 10.1109/JSTARS.2015.2427656  Published: JUN 2015  

Abstract: As a widely concerned research topic, many advanced algorithms have been proposed for hyperspectral unmixing. However, they may fail to accurately identify endmember signatures when coming across insufficient spatial resolution. To deal with this problem, an algorithm based on semisupervised linear sparse regression is proposed, in which unmixing procedure is reduced to seeking an optimal subset from the spectral library to best model mixed pixels in the scene. However, the number of the spectra with nonzero abundance is much more than that of the true endmember signatures. Furthermore, the selection of library spectra as endmember signatures is undesirable due to the divergent imaging conditions. In this paper, a novel projection-based nonnegative matrix factorization (NMF) (PNMF) algorithm is proposed by importing spectra library into the NMF framework. The main novelties of this paper are listed as follows. 1) By introducing the spectral library, the extraction of endmember signatures is no longer restricted by spatial resolution. 2) Related spectra are selected and projected onto a subspace containing the endmember signatures. So that the number of endmember signatures is controlled by dimension of the subspace. 3) In PNMF, the endmember signatures are adaptively generated from the spectral library, and are matched with the observed hyperspectral images. This overcomes the difficulty caused by diverse imaging conditions, and makes the proposed algorithm more practical for real applications. The experimental results, conducted on both synthetic and real hyperspectral data, illustrate the advantages of the proposed algorithm when compared with the state-of-the-art algorithms.

Accession Number: WOS:000359264000028

Conference Title: 6th Workshop on Hyperspectral Image and Signal Processing - Evolution in Remote Sensing (WHISPERS)

Conference Date: JUN 24-27, 2014

Conference Location: Lausanne, SWITZERLAND

Author Identifiers:

ISSN: 1939-1404

eISSN: 2151-1535

Record 4 of 125

Title: Transmission loss in x-ray framing cameras

Author(s): Bai, XH (Bai, Xiaohong); Zhu, BL (Zhu, Bingli); Bai, YL (Bai, Yonglin); Gou, YS (Gou, Yongsheng); Xu, P (Xu, Peng); Jin, J (Jin, Jing); Wang, B (Wang, Bo); Liu, BY (Liu, Baiyu); Qin, JJ (Qin, Junjun)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94491K  DOI: 10.1117/12.2077374  Published: 2015  

Abstract: We present evidence that transmission loss in gated x-ray framing cameras can affect relative gains. Transmission loss is caused by a variety of factors including: incident voltage waveform, matched load, width of Au electrode gap, and so on. The transition electrode in MCP (Micro-channel Plate) is continuous gradual change line, and it has good capability of compensation. When continuous gradual change micro-strip line is designed, dielectric loss tangent is one of transmission loss factors too. The model structure is designed based on the analysis of modeling and simulation techniques and experiment data as well as forecast target. The transmission loss is reduced from 50% to 25%, the transmission efficiency is greatly improved.

Accession Number: WOS:000354183600055

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 5 of 125

Title: A GPU-based Implementation of PKF for INs/eNS Integrated Navigation System

Author(s): Bai, ZF (Bai, Zhaofeng); Qiu, YH (Qiu, Yuehong)

Book Group Author(s): IEEE

Source: 2015 IEEE 6TH INTERNATIONAL SYMPOSIUM ON MICROWAVE, ANTENNA, PROPAGATION, AND EMC TECHNOLOGIES (MAPE)  Pages: 737-742  Published: 2015  

Abstract: By usiug uavigation system, carrier arrives at a predetermined position follow the route within the stipulated time, INS (Inertial Navigation System) has disadvantage of navigation error accumulate with time. CNS (Celestial Navigation System) has a low data update but the navigation error does not accumulate with time. Our goal is to develop a high-precision and high-performance navigation system by using integrated navigation method and Parallel Kalman Filter (PKF). As CPU (graphic processor units) have shown to provide much speedup in matrix computing which can be used on the filter algorithm of integrated navigation system, we will explore in this work for system performance optimization. Experiments results demonstrated that proposed solutions by using CPU accelerated Kalman filter has a scalable speedup as the measurement dimension increases than a pure CPU counterpart.

Accession Number: WOS:000398702000167

Conference Title: 6th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies

Conference Date: OCT 28-30, 2015

Conference Location: Shanghai, PEOPLES R CHINA

Conference Sponsors: IEEE, IEEE Beijing Sect, Beijing Jiaotong Univ, IEEE AP S, IEEE EO S, IEEE MTT S, IEEE Signal Proc Soc, ANSYS China

Author Identifiers:

ISBN: 978-1-4673-7441-5

Record 6 of 125

Title: Image compression based on GPU encoding

Author(s): Bai, ZF (Bai, Zhaofeng); Qiu, YH (Qiu, Yuehong)

Edited by: Falco CM; Jiang X

Source: SEVENTH INTERNATIONAL CONFERENCE ON DIGITAL IMAGE PROCESSING (ICDIP 2015)  Book Series: Proceedings of SPIE  Volume: 9631  Article Number: 96310D  DOI: 10.1117/12.2197078  Published: 2015  

Abstract: With the rapid development of digital technology, the data increased greatly in both static image and dynamic video image. It is noticeable how to decrease the redundant data in order to save or transmit information more efficiently. So the research on image compression becomes more and more important. Using GPU to achieve higher compression ratio has superiority in interactive remote visualization. Contrast to CPU, GPU may be a good way to accelerate the image compression. Currently, GPU of NIVIDIA has evolved into the eighth generation, which increasingly dominates the high-powered general purpose computer field. This paper explains the way of GPU encoding image. Some experiment results are also presented.

Accession Number: WOS:000360230700012

Conference Title: 7th International Conference on Digital Image Processing (ICDIP)

Conference Date: APR 09-10, 2015

Conference Location: Los Angeles, CA

Conference Sponsors: Wuhan Univ, Int Assoc Comp Sci & Informat Technol, Nanyang Technol Univ

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-829-3

Record 7 of 125

Title: On Two Heuristic Viewpoints Concerning the Study of Light

Author(s): Bi, SW (Bi, Siwen)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94490L  DOI: 10.1117/12.2085041  Published: 2015  

Abstract: It has been a debatable problem that what the essence of light is, and how it is produced. As James Clerk Maxwell setting up the theory of electromagnetic, the mainstream consciousness was occupied gradually by the wave theory of light. But at the end of 19th century, a series experimental phenomenon weren't precisely explained by the wave theory of light such as photoelectric effect experiment. In 1905, Albert Einstein published his famous paper. On a Heuristic Viewpoint Concerning the Production and Transformation of Light., which laid the foundation of light quantum hypothesis. While solving these problems perfectly, a new problem was caused that because the wave theory and the quantum theory are both applicable to interpret some of the experiment of light, what is the essence of light.
This paper first outlines the history of optical development and current status, and states the difficulties and deficiencies of the study of light. Then we put forward the key concept of the paper called lightstring which consults some points of the theory of modern optics and physics which called the optical frequency comb and the string theory, then presents the essence of light based on the light string concept in order to make the concept of photons specific. And then we put forward the production mechanism of light - the String-Light effect based on the concept of light string. In this paper, we attempt to put forward a new idea of the study of the essence of light and the production mechanism of it.

Accession Number: WOS:000354183600020

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-565-0

Record 8 of 125

Title: The Digital Simulation of End-To-End Imaging Chain in Optical Remote Sensing System Based on MTF Models

Author(s): Bu, F (Bu, Fan); Qiu, YH (Qiu, Yuehong); Yao, DL (Yao, Dalei); Jiang, BT (Jiang, Baotan)

Book Group Author(s): IEEE

Source: PROCEEDINGS OF 2015 4TH INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE AND NETWORK TECHNOLOGY (ICCSNT 2015)  Pages: 328-333  Published: 2015  

Abstract: The conflicts between the miniaturization of optical remote sensor and the high resolution force us to build an end-to-end simulation system, and optimize the process of the image acquisition and processing. In this paper, based on the analysis of MTF models of each link in imaging chain, a scientific visualization method of end-to-end optical remote sensing process using MTF models is presented. And, imaging simulation software is programmed with Matlab to implement the process. Using this program, the final simulated image can be generated from the original through the whole remote sensing image course according to the input parameters of each link in image chain. Through research on simulated images, we can analyze effectively the effects of each link on the quality of images, and carry out the optimization of optical remote sensor.

Accession Number: WOS:000393314500068

Conference Title: 4th International Conference on Computer Science and Network Technology (ICCSNT)

Conference Date: DEC 19-20, 2015

Conference Location: Harbin, PEOPLES R CHINA

Conference Sponsors: Heilongjiang Univ, Dalian Jiaotong Univ, NE Normal Univ, Shaanxi Normal Univ, Harbin Inst Technol, IEEE, IEEE Harbin Sect

Author Identifiers:

ISBN: 978-1-4673-8173-4

Record 9 of 125

Title: A design of camera simulator for photoelectric image acquisition system

Author(s): Cai, GH (Cai, Guanghui); Liu, W (Liu, Wen); Zhang, X (Zhang, Xin)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 944923  DOI: 10.1117/12.2075572  Published: 2015  

Abstract: In the process of developing the photoelectric image acquisition equipment, it needs to verify the function and performance. In order to make the photoelectric device recall the image data formerly in the process of debugging and testing, a design scheme of the camera simulator is presented. In this system, with FPGA as the control core, the image data is saved in NAND flash through USB2.0 bus. Due to the access rate of the NAND flash is too slow to meet the requirement of the system, to fix the problem, the pipeline technique and the High-Band-Buses technique are applied in the design to improve the storage rate. It reads image data out from flash in the control logic of FPGA and output separately from three different interface of Camera Link, LVDS and PAL, which can provide image data for photoelectric image acquisition equipment's debugging and algorithm validation. However, because the standard of PAL image resolution is 720*576, the resolution is difference between PAL image and input image, so the image can be output after the resolution conversion. The experimental results demonstrate that the camera simulator outputs three format image sequence correctly, which can be captured and displayed by frame gather. And the three-format image data can meet test requirements of the most equipment, shorten debugging time and improve the test efficiency.

Accession Number: WOS:000354183600074

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 10 of 125

Title: REPRESENTATIVE AND DIVERSE VIDEO SUMMARIZATION

Author(s): Chen, X (Chen, Xiao); Li, XL (Li, Xuelong); Lui, XQ (Lui, Xiaoqiang)

Book Group Author(s): IEEE

Source: 2015 IEEE CHINA SUMMIT & INTERNATIONAL CONFERENCE ON SIGNAL AND INFORMATION PROCESSING  Pages: 142-146  Published: 2015  

Abstract: Video summarization usually refers to produce a summary preserving essential content of the original video. Many existing methods have been developed to select representative frames by a dictionary learning model, which have led to a state-of-the-art performance. However, learning dictionary without considering relationship between samples of the original data space would lead to imprecise representation. To address this problem, in this paper, geometrical distribution information of samples is incorporated into the dictionary learning process. A graph based learning strategy is employed to draw the geometrical distribution information. Meanwhile, the diversity criteria is considered as important as representativeness, which can reduce redundant frames to be selected in final summary. Thus similarity measuring is imported to guarantee that a final summary contains diversity contents within the original video. The proposed method is validated on a challenging and widely used dataset, and state-of-the-art performance is achieved in contrast to other methods.

Accession Number: WOS:000380436500030

Conference Title: IEEE China Summit & International Conference on Signal and Information Processing

Conference Date: JUL 12-15, 2015

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: IEEE

Author Identifiers:

ISBN: 978-1-4799-1948-2

Record 11 of 125

Title: Colorimetric pyrometry system design and calibration experiment

Author(s): Chen, YH (Chen Yaohong); Liu, W (Liu Wei); Fan, ZY (Fan Zheyuan); Ren, L (Ren Long); Yi, B (Yi Bo); Xie, QS (Xie Qingsheng); Duan, CP (Duan Chengpeng)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94492P  DOI: 10.1117/12.2075515  Published: 2015  

Abstract: In order to solve the problem of the existing single waveband thermal imaging system can't get precise temperature of object with emissivity unknown, an optical system of beam splitting lens and filter were used to established a colorimetric temperature measurement system based on infrared thermal imaging system. Completed the compensation for non-effective pixel, enhancement of contrast, calibration of nonhomogeneity and coherence for infrared thermal imaging system according to the application requirement, then acquired the calibration data with blackbody as radiation source at 200 square similar to 500 square and fit it. A temperature measurement test performed at last, compared with the result acquired by thermocouple and single waveband thermal imaging system, it was shown that the colorimetric pyrometry system achieve the attractive precision after calibration and applied to measure the temperature of the object with emissivity unknown.

Accession Number: WOS:000354183600096

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 12 of 125

Title: Large mode area waveguides by volume ultrafast laser photoinscription

Author(s): Cheng, GH (Cheng, Guanghua); Liu, X (Liu, Xin); Stoian, R (Stoian, Razvan)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 944903  DOI: 10.1117/12.2083183  Published: 2015  

Abstract: Multicore structures based on increased index waveguiding traces are fabricated by ultrafast laser photoinscription in bulk optical glass. A parametric study of the geometry of structure, number of traces and index contrast is discussed with respect to guided modes characteristics. Multicore waveguide present optical designs allowing large mode area light guiding by ultrafast laser photoinscription with coherent mode superposition in near infrared and mid-infrared in fused silica and Chalcogenide glass.

Accession Number: WOS:000354183600002

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 13 of 125

Title: Research of wind loading on optical window for airborne optoelectronic equipment based on CFD

Author(s): Deng, XG (Deng, Xiaoguo); Yang, XX (Yang, Xiaoxu); Li, G (Li, Gang); Zheng, XG (Zheng, Xiaogiang)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94492G  DOI: 10.1117/12.2076597  Published: 2015  

Abstract: In order to improve the reliability and working performance of the optical window for airborne optoelectronic equipment, we conduct the aerodynamic analysis of airborne optoelectronic equipment under different flight speed, and get the aerodynamic load distribution of optical window under three different typical flight speed. By building the model of the optical window and simulating the model with the method of CFD, the deformation and stress caused by aerodynamic loading under different thickness of the optical window have been got. The results shows that the thickness of the optical window at 10mm could best meet the requirements of structural strength and quality. Then we analysis the impact of the deformation of the optical window on the imaging quality of the optical system. The deformation of the optical window is very tiny, and it is deformed from the flat into a spherical whose radius is very large. The MTF of the optical system after deformation are basically the same as its MTF before deformation. Thus, the impact of the deformation of the optical window on the imaging quality of the optical system can be ignored. The results of the analysis provide important reference for the design of the optical window for airborne optoelectronic equipment.

Accession Number: WOS:000354183600087

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 14 of 125

Title: The Design of Space Optical Communications Terminal with High Efficient

Author(s): Deng, XG (Deng, Xiaoguo); Li, G (Li, Gang); Jiang, B (Jiang, Bo); Yang, XX (Yang, Xiaoxu); Yan, PP (Yan, Peipei)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94490J  DOI: 10.1117/12.2083003  Published: 2015  

Abstract: In order to improve high-speed laser space optical communications terminal receive energy and emission energy, meet the demand of mini-type and light-type for space-based bear platform, based on multiple-reflect coaxial optical receiving antenna structure, while considering the installation difficulty, a high-efficient optical system had been designed, which aperture is off-axial, both signal-receiving sub-optical system and emission sub-optical system share a same primary optical path. By the separating light lens behind the primary optical path, the received light with little energy will be filtered and shaped and then transmitted to each detector, at the same time, by the coupling element, the high-power laser will be coupling into optical antenna, and then emitted to outside. Applied the power-detected optical system evaluate principle, the optimized off-axial optical system's efficiency had been compared with the coaxial optical system. While, analyzed the Gauss beam energy distribution by numerical theory, discussed that whether off-axis optical system can be an emission terminal, verify the feasibility of the theory of the design of the system.

Accession Number: WOS:000354183600018

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 15 of 125

Title: Analyzing time walk error of leading trailing edge CFD of timing discrimination for Gaussian and Rayleigh distribution waveform

Author(s): Dong, LJ (Dong, Lijun); Liu, K (Liu, Ke); Guo, L (Guo, Lei); Miao, YX (Miao, Yinxiao); Xin, LW (Xin, Liwei)

Edited by: Tan J; Wen X

Source: NINTH INTERNATIONAL SYMPOSIUM ON PRECISION ENGINEERING MEASUREMENTS AND INSTRUMENTATION  Book Series: Proceedings of SPIE  Volume: 9446  Article Number: 944642  DOI: 10.1117/12.2181701  Published: 2015  

Abstract: In this study we analyze one of a CFD for timing discrimination. Walk error, drift and precision are the three performance parameters of timing discrimination. The walk error is the most important error type generally. Firstly, we divided the waveform into two types. One is the Gaussian waveform distribution which has three parameters: amplitude, mean, and the pulse width; and the other is Rayleigh waveform distribution which has two parameters: mean and pulse. We analyzed different situations with their changing parameter, and the drift value of time can be obtained for each parameter changing.

Accession Number: WOS:000353127500144

Conference Title: 9th International Symposium on Precision Engineering Measurements and Instrumentation (ISPEMI)

Conference Date: AUG 08-10, 2014

Conference Location: Changsha, PEOPLES R CHINA

Conference Sponsors: Int Comm Measurements & Instrumentat, Chinese Soc Measurement, Instrumentat Comm, Harbin Inst Technol, Natl Univ Def Technol, Natl Nat Sci Fdn China, China Instrument & Control Soc

ISSN: 0277-786X

ISBN: 978-1-62841-561-2

Record 16 of 125

Title: Color filter array demosaicing: an adaptive progressive interpolation based on the edge type

Author(s): Dong, QQ (Dong, Qiqi); Liu, ZH (Liu, Zhaohui)

Edited by: Shen C; Yang W; Liu H

Source: AOPC 2015: IMAGE PROCESSING AND ANALYSIS  Book Series: Proceedings of SPIE  Volume: 9675  Article Number: 967518  DOI: 10.1117/12.2199330  Published: 2015  

Abstract: Color filter array (CFA) is one of the key points for single-sensor digital cameras to produce color images. Bayer CFA is the most commonly used pattern. In this array structure, the sampling frequency of green is two times of red or blue, which is consistent with the sensitivity of human eyes to colors. However, each sensor pixel only samples one of three primary color values. To render a full-color image, an interpolation process, commonly referred to CFA demosaicing, is required to estimate the other two missing color values at each pixel. In this paper, we explore an adaptive progressive interpolation based on the edge type algorithm. The proposed demosaicing method consists of two successive steps: an interpolation step that estimates missing color values according to various edges and a post-processing step by iterative interpolation.

Accession Number: WOS:000363280200044

Conference Title: Conference on Applied Optics and Photonics (AOPC) - Image Processing and Analysis

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-900-9

Record 17 of 125

Title: The Method of Time Synchronization between Telecommunication Base Stations with GPS Common View

Author(s): Du, X (Du, Xu); Hua, Y (Hua, Yu); Jin, XZ (Jin, Xiao-zhen); Jia, HN (Jia, Hai-ni)

Edited by: Qi E; Shen J; Dou R

Source: PROCEEDINGS OF THE 21ST INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT 2014  Pages: 31-34  DOI: 10.2991/978-94-6239-102-4_7  Published: 2015  

Abstract: According to the demand of the navigation system of China telecom to realize high precision time synchronization between adjacent base stations, we come up with the method of long distance time transfer using GPS common view. The hardware design and software design of this system are introduced in detail. In this paper, we use the powerful multi-channel Resolution T receiver and the TDC-GP1 counter chip to form a set of GPS common view comparison system based on ARM platform. Preliminary results of the test show that the system has stable performance and the alignment accuracy is within 5 ns. Therefore, this system we design can realize high precision time synchronization between adjacent base stations.

Accession Number: WOS:000373492700007

Conference Title: 21st International Conference on Industrial Engineering and Engineering Management 2014 (IEEM)

Conference Date: NOV 01-02, 2014

Conference Location: Zhuhai, PEOPLES R CHINA

Conference Sponsors: CMES, Chinese Ind Engn Inst, Beijing Inst Technol, Tianjin Univ Sci & Technol

ISBN: 978-94-6239-102-4; 978-94-6239-101-7

Record 18 of 125

Title: Real-fringe DASH interferometer for upper atmospheric wind and temperature observation: concept and simulation

Author(s): Fei, XY (Fei, Xiaoyun); Feng, YT (Feng, Yutao); Bai, QL (Bai, Qinglan)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94492S  DOI: 10.1117/12.2075814  Published: 2015  

Abstract: Doppler asymmetric spatial heterodyne spectroscopy (DASH) is a new technology for measuring upper atmospheric winds by observing the Doppler shift of atmospheric emission lines from a satellite using a limb viewing geometry. The real-fringe DASH interferometer is a modification of conventional DASH interferometer; it keeps the advantages of the conventional one. Moreover, this interferometer will not need exit optics to image the superposed fringes onto the detector; it will be more compact and lightweight, making it suitable for space-based platforms. We describe the concept of the new interferometer and present the exact expression of spatial frequency and phase of the interferogram. We also describe design and simulation of a real-fringe DASH interferometer for observation of the O [D-1] 630nm emission. The simulation results agree with the theory.

Accession Number: WOS:000354183600099

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 19 of 125

Title: Research on the High-brightness Traffic Variable Message Sign Based on Laser Diodes

Author(s): Feng, LL (Feng, Li-li); Huang, HT (Huang, Hai-tao); Ruan, C (Ruan, Chi)

Edited by: Lee B; Gu M; Yuan X; Jaque D; Su Y

Source: AOPC 2015: ADVANCED DISPLAY TECHNOLOGY; AND MICRO/NANO OPTICAL IMAGING TECHNOLOGIES AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 9672  Article Number: 967202  DOI: 10.1117/12.2196782  Published: 2015  

Abstract: Researches indicate that foggy weather is one of the most critical factors that restrict human's traffic activities and cause traffic accidents. It will reduce the visibility of traffic message board, which could cause the insecurity of transportation. Commonly, light-emitting diodes (LEDs) were used as light source for variable message sign, which could not be seen clearly in the foggy low visibility condition. A high-brightness light source which could be used for variable information board was firstly put forward in this paper. And a new type of variable message sign used in low visibility condition was also introduced. Besides, the attenuation characteristics of laser diode (LD) and light-emitting diode (LED) were analyzed respectively. Calculation and simulation show that the attenuation of red light source is fastest, and the yellow LED light has the better transmittance property. In the experiment, LDs were used to make variable message board for verifying image definition. A 16*16 array structure composed of LDs was designed and could display Chinese characters. By comparing the display effect of LDs and LEDs driven with same power, they were placed in fog chamber of the visibility less than 5 meters. And experiment results show that the penetrability of red LD light is better than that of red LED. So traffic variable message sign based on LDs could improve the image definition and the information could be seen more clearly in the foggy weather. In addition to the high-brightness, good coherence, good direction, experimental results show that traffic variable message board based on LD has better visual effect in low visibility condition.

Accession Number: WOS:000364672200002

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

ISSN: 0277-786X

ISBN: 978-1-62841-897-2

Record 20 of 125

Title: UNSUPERVISED FEATURE LEARNING FOR SCENE CLASSIFICATION OF HIGH RESOLUTION REMOTE SENSING IMAGE

Author(s): Fu, M (Fu, Min); Yuan, Y (Yuan, Yuan); Lu, XQ (Lu, Xiaoqiang)

Book Group Author(s): IEEE

Source: 2015 IEEE CHINA SUMMIT & INTERNATIONAL CONFERENCE ON SIGNAL AND INFORMATION PROCESSING  Pages: 206-210  Published: 2015  

Abstract: Due to the rapid development of various satellite sensors, a large amount of high resolution remote sensing images can be obtained. In order to efficiently represent the scenes from these high resolution images, an unsupervised feature learning method is proposed for high resolution image scene classification. In the proposed method, a set of filter banks are learned in an unsupervised manner from the unlabeled image patches, which are robust, efficient and do not need elaborately designed descriptors such as SIFT. And then, each image is encoded by these filter banks using a soft distance assignment scheme, generating a final feature vector to excellently represent the image scene. Finally, by virtue of the traditional SVM classifier, the sematic concepts of different scenes can be categorized. Experimental evaluation on the the high resolution remote sensing images demonstrates the effectiveness and good performance of the proposed method.

Accession Number: WOS:000380436500043

Conference Title: IEEE China Summit & International Conference on Signal and Information Processing

Conference Date: JUL 12-15, 2015

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: IEEE

Author Identifiers:

ISBN: 978-1-4799-1948-2

Record 21 of 125

Title: ASO-S: Advanced Space-based Solar Observatory

Author(s): Gan, WQ (Gan, Weiqun); Deng, YY (Deng, Yuanyong); Li, H (Li, Hui); Wu, J (Wu, Jian); Zhang, HY (Zhang, Haiying); Chang, J (Chang, Jin); Chen, CY (Chen, Changya); Zhang, ZQ (Zhang, Zhiqiang); Chen, B (Chen, Bo); Feng, L (Feng, Li); Guo, JH (Guo, Jianhua); Hu, YM (Hu, Yiming); Huang, Y (Huang, Yu); Li, ZH (Li, Zhaohui); Peng, YM (Peng, Yuming); Wang, DG (Wang, Dongguang); Wang, H (Wang, Hong); Wang, JN (Wang, Jianing); Wen, DS (Wen, Desheng); Wu, Z (Wu, Zhen); Zhang, Z (Zhang, Zhe); Zhao, EX (Zhao, Erxin)

Edited by: Fineschi S; Fennelly J

Source: SOLAR PHYSICS AND SPACE WEATHER INSTRUMENTATION VI  Book Series: Proceedings of SPIE  Volume: 9604  Article Number: 96040T  DOI: 10.1117/12.2189062  Published: 2015  

Abstract: ASO-S is a mission proposed for the 25th solar maximum by the Chinese solar community. The scientific objectives are to study the relationships among solar magnetic field, solar flares, and coronal mass ejections (CMEs). ASO-S consists of three payloads: Full-disk Magnetograph (FMG), Lyman-alpha Solar Telescope (LST), and Hard X-ray Imager (HXI), to measure solar magnetic field, to observe CMEs and solar flares, respectively. ASO-S is now under the phase-B studies. This paper makes a brief introduction to the mission.

Accession Number: WOS:000366021400020

Conference Title: Conference on Solar Physics and Space Weather Instrumentation VI

Conference Date: AUG 09-10, 2015

Conference Location: San Diego, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-770-8

Record 22 of 125

Title: A Maximum Entropy Feature Descriptor for Age Invariant Face Recognition

Author(s): Gong, DH (Gong, Dihong); Li, ZF (Li, Zhifeng); Tao, DC (Tao, Dacheng); Liu, JZ (Liu, Jianzhuang); Li, XL (Li, Xuelong)

Book Group Author(s): IEEE

Source: 2015 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION (CVPR)  Book Series: IEEE Conference on Computer Vision and Pattern Recognition  Pages: 5289-5297  Published: 2015  

Abstract: In this paper, we propose a new approach to overcome the representation and matching problems in age invariant face recognition. First, a new maximum entropy feature descriptor (MEFD) is developed that encodes the microstructure of facial images into a set of discrete codes in terms of maximum entropy. By densely sampling the encoded face image, sufficient discriminatory and expressive information can be extracted for further analysis. A new matching method is also developed, called identity factor analysis (IFA), to estimate the probability that two faces have the same underlying identity. The effectiveness of the framework is confirmed by extensive experimentation on two face aging datasets, MORPH (the largest public-domain face aging dataset) and FGNET. We also conduct experiments on the famous LFW dataset to demonstrate the excellent generalizability of our new approach.

Accession Number: WOS:000387959205037

Conference Title: IEEE Conference on Computer Vision and Pattern Recognition (CVPR)

Conference Date: JUN 07-12, 2015

Conference Location: Boston, MA

Conference Sponsors: IEEE

Author Identifiers:

ISSN: 1063-6919

ISBN: 978-1-4673-6964-0

Record 23 of 125

Title: A new X-ray framing camera with picoseconds time resolution

Author(s): Gou, YS (Gou Yongsheng); Bai, YL (Bai Yonglin); Liu, BY (Liu Baiyu); Bai, XH (Bai Xiaohong); Qin, JJ (Qin Junjun); Wang, B (Wang Bo); Zhu, BL (Zhu Bingli); Xu, P (Xu Peng); Cao, WW (Cao Weiwei)

Edited by: Gong H; Wu N; Ni Y; Chen W; Lu J

Source: AOPC 2015: OPTICAL AND OPTOELECTRONIC SENSING AND IMAGING TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 9674  Article Number: 96740G  DOI: 10.1117/12.2197312  Published: 2015  

Abstract: A new method to get a X-ray framing camera with picoseconds time resolution was proposed based on time amplification. Its principle comes from that we use high voltage electrical pulse to get speed dispersion of the photoelectrons pulse first, and then the photoelectrons pulse will be stretched in axial direction by drift area, at the end the photoelectrons pulse after stretched will be framing imaged by a traditional MCP(microchannel plate) gated framing camera. A model of the camera was built according to this method. Time amplification of the system is about 30, and image magnification of the system is about 0.4. Parameters for designing the camera system were presented after theoretical deriving and model simulation. At last, theoretical time resolution and spatial resolution of the camera were given.

Accession Number: WOS:000364675700046

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-899-6

Record 24 of 125

Title: A circuit used for peak power detecting of the laser pulse

Author(s): Gou, YS (Gou Yongsheng); Liu, BY (Liu Baiyu); Bai, YL (Bai Yonglin); Wang, B (Wang Bo); Zhu, BL (Zhu Bingli); Bai, XH (Bai Xiaohong); Qin, JJ (Qin Junjun); Xu, P (Xu Peng)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94492O  DOI: 10.1117/12.2075496  Published: 2015  

Abstract: Based on the principle of capacitor pre-charging, an analog pulse stretch circuit is designed for detecting peak power of narrow laser impulse. Experimental test were carried out. And it could achieve regulation accuracy of 5ps, jitter<600ps. Due to the need of different delay ranges during the practical applications, the analog pulse stretch circuit is optimized. It doesn't only meet the different adjustment ranges, but also maintains high regulation accuracy.

Accession Number: WOS:000354183600095

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 25 of 125

Title: Color Constancy Technology based on Detail Description

Author(s): Guo, HN (Guo Huinan); Cao, JZ (Cao Jianzhong); Zhang, H (Zhang Hui); Zhou, ZF (Zhou Zuofeng)

Edited by: Falco CM; Jiang X

Source: SEVENTH INTERNATIONAL CONFERENCE ON DIGITAL IMAGE PROCESSING (ICDIP 2015)  Book Series: Proceedings of SPIE  Volume: 9631  Article Number: 96310U  DOI: 10.1117/12.2197007  Published: 2015  

Abstract: Color constancy is an important problem in machine vision and image processing fields. We propose a new method in this paper that is based on detail information description to estimate the chromaticity of the light source and restore the real color property of captured images. The main idea of the proposed approach is that according to human vision characteristics use the interest information in an image to estimate the lighting condition of real scene. To approve the proposed method, two well-known algorithms are selected and their contrast results are also presented. It is shown in this paper that the proposed approach performs better than other traditional methods for color constancy most of the time.

Accession Number: WOS:000360230700029

Conference Title: 7th International Conference on Digital Image Processing (ICDIP)

Conference Date: APR 09-10, 2015

Conference Location: Los Angeles, CA

Conference Sponsors: Wuhan Univ, Int Assoc Comp Sci & Informat Technol, Nanyang Technol Univ

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-829-3

Record 26 of 125

Title: Color Enhancement Algorithm for Low-Quality Image Based on Gamma Mapping

Author(s): Guo, HN (Guo, Huinan); Zhang, GP (Zhang, Gaopeng); Mei, C (Mei, Chao); Zhang, DR (Zhang, Derui); Song, XD (Song, Xiaodong)

Edited by: Zhang Q

Source: SIXTH INTERNATIONAL CONFERENCE ON ELECTRONICS AND INFORMATION ENGINEERING  Book Series: Proceedings of SPIE  Volume: 9794  Article Number: 97941X  DOI: 10.1117/12.2202930  Published: 2015  

Abstract: Color quality plays an important role in imaging and displaying. For the Low-quality image, we propose a new method in this paper that is based on gamma mapping to improve color contrast and restore color expression of real world scene. The main idea of the proposed approach is that according to human vision characteristics uses logarithm transformation to extend luminance response of image so; meanwhile, adopts the gamma mapping to enhance the contrast of highlight and dark regions. To approve the proposed method, two well-known algorithms are selected and their contrast results are also presented. The results show that the proposed approach performs better than other traditional methods for color restoration which is of good robustness.

Accession Number: WOS:000366833200067

Conference Title: 6th International Conference on Electronics and Information Engineering (ICEIE)

Conference Date: SEP 26-27, 2015

Conference Location: Dalian, PEOPLES R CHINA

Conference Sponsors: Dalian Univ, Key Lab Adv Design & Intelligent Comp, Minist Educ

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-5106-0029-4

Record 27 of 125

Title: Sparse representation based on multiscale bilateral filter for infrared image using compressed sensing

Author(s): Han, JJ (Han, Jiaojiao); Qin, HL (Qin, Hanlin); Leng, HB (Leng, Hanbing); Yan, X (Yan, Xiang); Li, J (Li, Jia); Zhou, HX (Zhou, Huixin)

Edited by: Gong H; Wu N; Ni Y; Chen W; Lu J

Source: AOPC 2015: OPTICAL AND OPTOELECTRONIC SENSING AND IMAGING TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 9674  Article Number: 96742Q  DOI: 10.1117/12.2202706  Published: 2015  

Abstract: Compressed sensing is an arisen and significant theory, which has been widely used in infrared image reconstruction and many methods based on compressed sensing have been proposed. However, the existing methods can hardly accurately reconstruct infrared images. Considering that the sparsity of an infrared image plays a crucial role in compressed sensing to accurately reconstruct image, this paper presents a new sparse representation (MBFSF) that integrates the multiscale bilateral filter with shearing filter to overcome the above disadvantage. Firstly, one approximation subband image and a series of detail subband images at different scales and directions are obtained by the MBFSF. Then, in view of the feature that the most information is preserved in the approximation subband image, the proposed method only measures the detail subband images and preserves the approximation subband image. Subsequently, a very sparse random measurement matrix is used for the measurement at the detail subband images to reduce the computation cost and storage of large random measurement matrices in compressed sensing. Finally, an accelerated iterative hard thresholding algorithm is employed to reconstruct the infrared image. Experimental results show that the proposed method has superior performance in terms of reconstruction accuracy and compares favorably with existing compressed sensing methods, which is an effective method in high-resolution infrared imaging based on compressed sensing.

Accession Number: WOS:000364675700105

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-899-6

Record 28 of 125

Title: The realization of low order FSM method and its application

Author(s): He, J (He, Jiai); Liu, XY (Liu, Xiangyang); Pei, CQ (Pei, Chengquan)

Edited by: Du W; Zhou X

Source: PROCEEDINGS OF THE 2015 3RD INTERNATIONAL CONFERENCE ON MACHINERY, MATERIALS AND INFORMATION TECHNOLOGY APPLICATIONS  Book Series: ACSR-Advances in Comptuer Science Research  Volume: 35  Pages: 1830-1835  Published: 2015  

Abstract: Cyclostationary statistical characteristic is the main theory of studying non-stationary periodic signal. Signal and noise are always assumed that obey Gaussian distribution model in traditional signal's processing. As the environment of non-Gaussian pulse is increasing complex, degradation problems of system performance can be solved by building alpha stable distribution theory model. Firstly, this paper introduces the alpha stable distribution to estimate FSM cyclic spectrum and proposes cycle spectrum analysis under discrete signal. Then, the verification is given by taking AM communication signal on Matlab platform. The results show that in a complex environment, the low-level FSM algorithm which is based on alpha stable distribution has better performances on robustness and noise immunity. Finally, the algorithm proposed in this paper is applied to construct characteristic parameter, which is important for blind signal separation and identification.

Accession Number: WOS:000371522300342

Conference Title: 3rd International Conference on Machinery, Materials and Information Technology Applications (ICMMITA)

Conference Date: NOV 28-29, 2015

Conference Location: Qingdao, PEOPLES R CHINA

ISSN: 2352-538X

ISBN: 978-94-6252-120-9

Record 29 of 125

Title: High Power Diode Laser Stack Development Using Gold-Tin Bonding Technology

Author(s): Hou, D (Hou, Dong); Wang, JW (Wang, Jingwei); Zhang, P (Zhang, Pu); Cai, L (Cai, Lei); Dai, Y (Dai, Ye); Li, YJ (Li, Yingjie); Liu, XS (Liu, Xingsheng)

Edited by: Glebov AL; Leisher PO

Source: COMPONENTS AND PACKAGING FOR LASER SYSTEMS  Book Series: Proceedings of SPIE  Volume: 9346  Article Number: 934604  DOI: 10.1117/12.2079610  Published: 2015  

Abstract: High power diode lasers have increased application in many fields. In this work, a sophisticated high power and high performance conduction cooled diode laser stack has been developed for long pulse duration and high duty cycle using gold-tin (AuSn) bonding technology. The transient thermal behavior and optical simulation of the laser diode stack module are investigated to optimize the laser device structure. CTE-matched submount and AuSn hard solder are used for bonding the laser diode bar to achieve higher reliability and longer lifetime. Guided by the numerical simulation and analytical results, conduction cooled diode laser stack with high power, long pulse duration and high duty cycle is fabricated and characterized. Compared with the conventional indium bonding technology, the new design is a promising approach to obtain improved performance with high reliability and long lifetime.

Accession Number: WOS:000353681400004

Conference Title: Conference on Components and Packaging for Laser Systems

Conference Date: FEB 09-12, 2015

Conference Location: San Francisco, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-436-3

Record 30 of 125

Title: The design of aerial camera Focusing Mechanism

Author(s): Hu, CC (Hu, Changchang); Yang, HT (Yang, Hongtao); Niu, HJ (Niu, Haijun)

Edited by: Han S; Ellis JD; Guo J; Guo Y

Source: AOPC 2015: OPTICAL TEST, MEASUREMENT, AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 9677  Article Number: 96771F  DOI: 10.1117/12.2199676  Published: 2015  

Abstract: In order to ensure the imaging resolution of aerial camera and compensating defocusing caused by the changing of atmospheric temperature, pressure, oblique photographing distance and other environmental factor [1,2], and to meeting the overall design requirements of the camera for the lower mass and smaller size, the linear focusing mechanism is designed. Through the target surface support, the target surface component is connected with focusing driving mechanism. Make use of precision ball screws, focusing mechanism transforms the input rotary motion of motor into linear motion of the focal plane assembly. Then combined with the form of linear guide restraint movement, the magnetic encoder is adopted to detect the response of displacement. And the closed loop control is adopted to realize accurate focusing. This paper illustrated the design scheme for a focusing mechanism and analyzed its error sources. It has the advantages of light friction and simple transmission chain and reducing the transmission error effectively. And this paper also analyses the target surface by finite element analysis and lightweight design. Proving that the precision of focusing mechanism can achieve higher than 3um, and the focusing range is +/- 2mm.

Accession Number: WOS:000364678700061

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

ISSN: 0277-786X

ISBN: 978-1-62841-902-3

Record 31 of 125

Title: Videometrics Technology of Flyers' Pose

Author(s): Hu, XL (Hu Xiaoli); Su, XQ (Su Xiuqin); Zhang, SX (Zhang Sanxi); Liu, B (Liu Biao); Zhou, ZQ (Zhou Zhiqiang)

Edited by: Han S; Ellis JD; Guo J; Guo Y

Source: AOPC 2015: OPTICAL TEST, MEASUREMENT, AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 9677  Article Number: 96770V  DOI: 10.1117/12.2199225  Published: 2015  

Abstract: In this paper pose measurement refers to flying pose measurement of rigid body including the pitch angle, yaw angel and roll angle. Pose measurement is of vital importance for such items as weapons settings, fault analysis and optimation design. Pose measurement based on optical images has many merits such as intuitive and non-contacted, which is a main method to measure pose currently. According to the parameters used and principle of the algorithms, the existing methods of pose measurement based on optical images are classified systematically and comprehensively for the first time as following: the methods of one station un-using camera's inner parameters are divided into the feature length ratio method and the direct linear transformation(DLT) method, otherwise they are divided into the perspective n points(PNP)problem and the optical and radar integration method, the axes from planes intersection using two stations extensible to multistation, and model matching applied to one or more stations, and then they are comparatively analyzed. At last combined with practical applications such as one or more stations, have or no model and inner parameters used or unused, some selection and improvement of key points are given practically.

Accession Number: WOS:000364678700051

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-902-3

Record 32 of 125

Title: Study on the technology of mutual alignment based on the four-quadrant photo electric detector

Author(s): Hu, YB (Hu Ya-bin); Wang, M (Wang Miao)

Edited by: Liu S; Zhuang S; Lv D; Wang L; Zhang G; Petelin MI; Xiang L

Source: SELECTED PAPERS OF THE PHOTOELECTRONIC TECHNOLOGY COMMITTEE CONFERENCES  Book Series: Proceedings of SPIE  Volume: 9795  Article Number: 979501  DOI: 10.1117/12.2207844  Published: 2015  

Abstract: Panoramic stereo cameras and laser radars have their own coordinate system in the dynamic spatial sensing area and they have to determine the position relationship between each other through joint calibration. As using the traditional technology of mutual alignment based on the telescope cross wire is tedious and requires high operating skills, a new method of mutual alignment using lasers and four-quadrant photo electric detectors is provided after analyzing the working principle of four-quadrant photo electric detectors. Firstly make the laser beam irradiate the active area of the four-quadrant photo electric detector through coarse aiming. Then the center of a light spot offset relative to the center of the active area can be obtained according to the output voltage of four quadrants. The pose of two instruments can be adjusted properly to realize mutual alignment. The experimental results indicate that the alignment accuracy of four-quadrant detectors can meet the requirements of mutual alignment, which provides a new idea for joint calibration.

Accession Number: WOS:000369137800002

Conference Title: International Conference on Frontiers in Optical Imaging Technology and Applications / International Symposium on Terahertz Technology and Applications / International Symposium on Surface Topography and Optical Microscopy

Conference Date: 2015

Conference Location: PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Shanghai Sci & Technol, Chinese Acad Engn, Natl Nat Sci Fdn China, Harbin Inst Technol

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-0168-0

Record 33 of 125

Title: Restoration of motion blurred image with Lucy-Richardson algorithm

Author(s): Jing, L (Jing, Li); Hui, LZ (Hui, Liu Zhao); Liang, Z (Liang, Zhou)

Edited by: Shen C; Yang W; Liu H

Source: AOPC 2015: IMAGE PROCESSING AND ANALYSIS  Book Series: Proceedings of SPIE  Volume: 9675  Article Number: 967519  DOI: 10.1117/12.2199337  Published: 2015  

Abstract: Images will be blurred by relative motion between the camera and the object of interest. In this paper, we analyzed the process of motion-blurred image, and demonstrated a restoration method based on Lucy-Richardson algorithm. The blur extent and angle can be estimated by Radon transform algorithm and auto-correlation function, respectively, and then the point spread function (PSF) of the motion-blurred image can be obtained. Thus with the help of the obtained PSF, the Lucy-Richardson restoration algorithm is used for experimental analysis on the motion-blurred images that have different blur extents, spatial resolutions and signal-to-noise ratios (SNR's). Further, its effectiveness is also evaluated by structural similarity (SSIM). Further studies show that, at first, for the image with a spatial frequency of 0.2 per pixel, the modulation transfer function (MTF) of the restored images can maintains above 0.7 when the blur extent is no bigger than 13 pixels. That means the method compensates low frequency information of the image, while attenuates high frequency information. At second, we fund that the method is more effective on condition that the product of the blur extent and spatial frequency is smaller than 3.75. Finally, the Lucy-Richardson algorithm is found insensitive to the Gaussian noise (of which the variance is not bigger than 0.1) by calculating the MTF of the restored image.

Accession Number: WOS:000363280200045

Conference Title: Conference on Applied Optics and Photonics (AOPC) - Image Processing and Analysis

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-900-9

Record 34 of 125

Title: Experiments of Ghost imaging with pseudo-thermal light for remote sensing applications

Author(s): Kang, ZH (Kang, Zhihua); Ma, L (Ma, Lin); Kang, Y (Kang, Yan); Yao, YP (Yao, Yinping); Zhang, TY (Zhang, Tongyi)

Edited by: Gong H; Wu N; Ni Y; Chen W; Lu J

Source: AOPC 2015: OPTICAL AND OPTOELECTRONIC SENSING AND IMAGING TECHNOLOGY  Book Series: Proceedings of SPIE  Volume: 9674  Article Number: 96742U  DOI: 10.1117/12.2202795  Published: 2015  

Abstract: Based on previous researches, we construct a pseudo-thermal light ghost imaging system suited for remote imaging applications. By using pulsed pseudo-thermal light, the transmitted power is improved to ghost imaging long distant targets. By using imaging lens system, the path lengths of reference and signal light need not keep equal, as in lensless ghost imaging system, thus the transmitter, receiver, and correlator circuit can be integrated and keep compact. Furthermore, the revolution is improved by reducing the sizes of speckles. And the number of imaging frames is decreased (thus reduced the image-reconstruct time) and the signal-noise-ratio of ghost image is improved by compressed sensing. Based on the constructed experimental system, we implemented ghost imaging of a target at about 30m range.

Accession Number: WOS:000364675700109

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-899-6

Record 35 of 125

Title: Detecting Shadow of Moving Object based on Phong Illumination Model

Author(s): Li, FP (Li, Fei Peng); Song, ZX (Song, Zongxi); Li, B (Li, Bin); Wu, MJ (Wu, Meng Jie); Shen, C (Shen, Chao)

Edited by: Ching X; Dvorik V

Source: PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON INFORMATION SCIENCES, MACHINERY, MATERIALS AND ENERGY (ICISMME 2015)  Book Series: Advances in Intelligent Systems Research  Volume: 126  Pages: 2019-2022  Published: 2015  

Abstract: When detecting moving objects using visible light image sequence, the shadows of moving objects always appear together with moving objects. Shadows usually change with light condition, which brings difficulty for recognizing objects after segmenting image. This text proposes an algorithm to detect shadows in foreground image according to the Phong illumination model. The algorithm combines the brightness information between foreground image and background image to calculate an array of brightness relative variation ratio, detecting shadows using the statistical feature of shadows in the array. The algorithm uses the statistical histogram to describe statistical feature of brightness relative variation ratio, and the Gaussian model to do curve fitting as a description for the shape of statistical histogram. And finally with the property of the fitted function could we find the threshold value of shadows adaptively.

Accession Number: WOS:000359818900412

Conference Title: 1st International Conference on Information Sciences, Machinery, Materials and Energy (ICISMME)

Conference Date: APR 11-13, 2015

Conference Location: Chongqing, PEOPLES R CHINA

Conference Sponsors: Budapest Univ Technol & Econ, Univ W England, Univ Technol Sydney, Univ Polytechn Bucharest, Univ Teknologi MARA

Author Identifiers:

ISSN: 1951-6851

ISBN: 978-94-62520-67-7

Record 36 of 125

Title: Effects of Packaging on the Performances of High Brightness 9xx nm CW Mini-bar Diode Lasers

Author(s): Li, XN (Li, Xiaoning); Wang, JW (Wang, Jingwei); Feng, FF (Feng, Feifei); Liu, YL (Liu, Yalong); Yu, DS (Yu, Dongshan); Zhang, P (Zhang, Pu); Liu, XS (Liu, Xingsheng)

Edited by: Glebov AL; Leisher PO

Source: COMPONENTS AND PACKAGING FOR LASER SYSTEMS  Book Series: Proceedings of SPIE  Volume: 9346  Article Number: 93460C  DOI: 10.1117/12.2080480  Published: 2015  

Abstract: 9xx nm CW mini-bar diode lasers and stacks with high brightness and reliability are desired for pumping fiber lasers and direct fiber coupling applications. For the traditional cm-bar with 1mm-2mm cavity, it can provide CW output power up to 80W-100W and high reliability, whereas the brightness is relatively low. In comparison, mini-bar based diode lasers with 4mm cavity offer a superior performance balance between power, brightness, and reliability. However, the long cavity and large footprint of mini-bar diode laser renders its sensitivity towards thermal stress formed in packaging process, which directly affects the performances of high bright mini-bar diode lasers. In this work, the thermal stress correlating with package structure and packaging process are compared and analyzed. Based on the experiment and analysis results, an optimized package structure of CW 60W 976 nm mini-bar diode lasers is designed and developed which relieves thermal stress.

Accession Number: WOS:000353681400009

Conference Title: Conference on Components and Packaging for Laser Systems

Conference Date: FEB 09-12, 2015

Conference Location: San Francisco, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-436-3

Record 37 of 125

Title: A kind of transmission-type lens using in X-ray band

Author(s): Li, Y (Li, Yan); Li, XL (Li, Xiao-li); Xu, XY (Xu, Xiangyan)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 944917  DOI: 10.1117/12.2075444  Published: 2015  

Abstract: The negative refractive index characteristics of one-dimensional photonic crystal consisted by Fibonacci multi-layer films has been studied by numerical method. The refractive indices for two materials, which are used to construct the Fibonacci multi-layer films, are 0.920 and 0.999, respectively. The calculation result shows that, on one hand, there are several negative refractive index zones for this kind of photonic crystal even if the refractive indices are very small; on the other hand, the difference is very large for the frequency between the zones. As an example, a kind of transmission-type plano-concave lens is designed. The simulation of the electromagnetic field distribution for the lens demonstrates that the lens can focus the incoming X-ray radiation. At the same time, the calculation of the absorption strength and refractive indices for real materials shows that not only there are large differences for the absorption strength with different materials, but also the refractive indices for real materials are different in X-ray band. Obviously, the characteristics above support a kind of transmission-type lens using in X-ray.

Accession Number: WOS:000354183600042

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 38 of 125

Title: Calibration method of focal plane for static multi-star simulator

Author(s): Li, ZH (Li Zhaohui); Zhao, JK (Zhao Jianke); Xu, L (Xu Liang)

Edited by: Liu S; Zhuang S; Lv D; Wang L; Zhang G; Petelin MI; Xiang L

Source: SELECTED PAPERS OF THE PHOTOELECTRONIC TECHNOLOGY COMMITTEE CONFERENCES  Book Series: Proceedings of SPIE  Volume: 9795  Article Number: 979505  DOI: 10.1117/12.2208000  Published: 2015  

Abstract: The calibration work was important to the development of star sensor, improving the accuracy of star simulator was very important for the calibration of star sensor. In reality, being limited in manufacturing technology, assembling and testing facility and so on, it was very difficult to achieve the precision of design theory, especially the star angular distance. In this paper, from the accuracy of angular distance of star simulator, combined with the installation practice, through real-time monitoring of theodolite, and put forward a quantitative method of focusing. Experimentation have shown that the method can realize the accurately focusing of star simulator, all the angle distance error finally were less than 7.72., and can improve the installation efficiency.

Accession Number: WOS:000369137800006

Conference Title: International Conference on Frontiers in Optical Imaging Technology and Applications / International Symposium on Terahertz Technology and Applications / International Symposium on Surface Topography and Optical Microscopy

Conference Date: 2015

Conference Location: PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Shanghai Sci & Technol, Chinese Acad Engn, Natl Nat Sci Fdn China, Harbin Inst Technol

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-5106-0168-0

Record 39 of 125

Title: Design of low-dispersion output coupler for Cr:LiSAF lasers

Author(s): Liao, CY (Liao, Chunyan); Qin, JJ (Qin, Junjun); Zhu, XH (Zhu, Xiuhong)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94491S  DOI: 10.1117/12.2083289  Published: 2015  

Abstract: An designed output coupler used for the dispersion compensation in Cr:LiSAF femtosecond lasers is reported. It is composed of 50 alternating Ta2O5 and SiO2 layers whose thicknesses are obtained by computer optimization to provide low transmittance and as little as possible group delay dispersion. The optimized output coupler has continuous low transmittance of 1% and group delay dispersion of 0 +/- 6fs(2) from 750nm to 900nm, which can meet the need of dispersion compensation in Cr:LiSAF lasers.

Accession Number: WOS:000354183600063

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

Author Identifiers:

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 40 of 125

Title: The Design of ADRC Based on Single Axis Stable Platform

Author(s): Liu, EH (Liu, Erhao); Yang, HT (Yang, Hongtao); Liu, GS (Liu, Guangsen)

Edited by: Jiang LB; Zhang XY

Source: PROCEEDINGS OF THE 2015 4TH INTERNATIONAL CONFERENCE ON COMPUTER, MECHATRONICS, CONTROL AND ELECTRONIC ENGINEERING (ICCMCEE 2015)  Book Series: AER-Advances in Engineering Research  Volume: 37  Pages: 1355-1361  Published: 2015  

Abstract: Permanent magnet synchronous motor (PMSM) driving stable platform directly is often used in guided rockets. Due to the extended state observe (ESO) contained in the active disturbance rejection controller (ADRC), it can estimate the speed of the rotated carrier and the uncertain disturbances accurately without requiring exact mathematic model of system. An active disturbance rejection controller based on single axis stable platform is designed and optimized. The simulation results show that the system using the simplified ADRC has such characters as high robustness, high accurate and quickness.

Accession Number: WOS:000373379700252

Conference Title: 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering (ICCMCEE)

Conference Date: SEP 28-29, 2015

Conference Location: Hangzhou, PEOPLES R CHINA

Conference Sponsors: Int Informatizat & Engn Assoc, Indian Inst Technol, Univ Sydney Technol, Univ Polytechn Bucharest, Univ Teknologi MARA

ISSN: 2352-5401

ISBN: 978-94-6252-110-0

Record 41 of 125

Title: Characterization of Far Field of Diode Laser by Three Dimensional Measurement

Author(s): Liu, H (Liu, Hui); Yuan, ZY (Yuan, Zhiyuan); Cui, L (Cui, Long); Wu, D (Wu, Di); Liu, XS (Liu, Xingsheng)

Edited by: Glebov AL; Leisher PO

Source: COMPONENTS AND PACKAGING FOR LASER SYSTEMS  Book Series: Proceedings of SPIE  Volume: 9346  Article Number: 93461A  DOI: 10.1117/12.2076548  Published: 2015  

Abstract: In this paper three dimensional characterization of the far field of diode laser beam is proposed. Both the divergence angle and intensity distribution can be extracted and analyzed from the measurement results with obliquity factor correction and power transmission correction. The instrument provides high resolution and fast measurement.

Accession Number: WOS:000353681400032

Conference Title: Conference on Components and Packaging for Laser Systems

Conference Date: FEB 09-12, 2015

Conference Location: San Francisco, CA

Conference Sponsors: SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-436-3

Record 42 of 125

Title: Topology optimization design of a space mirror

Author(s): Liu, JZ (Liu, Jiazhen); Jiang, B (Jiang, Bo)

Edited by: Liu S; Zhuang S; Lv D; Wang L; Zhang G; Petelin MI; Xiang L

Source: SELECTED PAPERS OF THE PHOTOELECTRONIC TECHNOLOGY COMMITTEE CONFERENCES  Book Series: Proceedings of SPIE  Volume: 9795  Article Number: 97952Y  DOI: 10.1117/12.2209031  Published: 2015  

Abstract: As key components of the optical system of the space optical remote sensor, Space mirrors' surface accuracy had a direct impact that could't be ignored of the imaging quality of the remote sensor. In the future, large-diameter mirror would become an important trend in the development of space optical technology. However, a sharp increase in the mirror diameter would cause the deformation of the mirror and increase the thermal deformation caused by temperature variations. A reasonable lightweight structure designed to ensure the optical performance of the system to meet the requirements was required. As a new type of lightweight approach, topology optimization technology was an important direction of the current space optical remote sensing technology research. The lightweight design of rectangular mirror was studied. the variable density method of topology optimization was used. The mirror type precision of the mirror assemblies was obtained in different conditions. PV value was less than lambda/10 and RMS value was less than lambda/50(lambda = 632.8nm). The results show that the entire The mirror assemblies can achieve a sufficiently high static rigidity, dynamic stiffness and thermal stability and has the capability of sufficient resistance to external environmental interference. Key words: topology optimization, space mirror, lightweight, space optical remote sensor

Accession Number: WOS:000369137800104

Conference Title: International Conference on Frontiers in Optical Imaging Technology and Applications / International Symposium on Terahertz Technology and Applications / International Symposium on Surface Topography and Optical Microscopy

Conference Date: 2015

Conference Location: PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Shanghai Sci & Technol, Chinese Acad Engn, Natl Nat Sci Fdn China, Harbin Inst Technol

ISSN: 0277-786X

ISBN: 978-1-5106-0168-0

Record 43 of 125

Title: SUPERPIXEL FATS FOR FAST FOREGROUND EXTRACTION

Author(s): Liu, K (Liu, Kang); Li, XL (Li, Xuelong); Dong, YS (Dong, Yongsheng)

Book Group Author(s): IEEE

Source: 2015 IEEE CHINA SUMMIT & INTERNATIONAL CONFERENCE ON SIGNAL AND INFORMATION PROCESSING  Pages: 132-136  Published: 2015  

Abstract: Fast foreground extraction is an important and challenging problem. Although GrabCut can perform well in foreground extraction, the average accuracy is not satisfactory, and more importantly, its computational cost is large. In this paper, we propose a fast interactive foreground extraction based on superpixel GrabCut and matting. Specifically, we use a superpixel method to process images in order to improve the efficiency of the GrabCut. To obtain a refined mask, we employ the Shared matting method whose trimaps are implemented by our constructed fast and adaptive trimaps (FATs). Experimental results demonstrate the proposed method is more competitive and effective in the visual sense, E-Time and MSE criterions.

Accession Number: WOS:000380436500028

Conference Title: IEEE China Summit & International Conference on Signal and Information Processing

Conference Date: JUL 12-15, 2015

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: IEEE

Author Identifiers:

ISBN: 978-1-4799-1948-2

Record 44 of 125

Title: A modified star map identification method suitable for astronomical camera

Author(s): Liu, MY (Liu, Meiying); Wang, H (Wang, Hu); Wen, DS (Wen, Desheng); Liu, J (Liu, Jie); Xue, YK (Xue, Yaoke); Liu, Y (Liu, Yang); Zhao, H (Zhao, Hui)

Edited by: Shen C; Yang W; Liu H

Source: AOPC 2015: IMAGE PROCESSING AND ANALYSIS  Book Series: Proceedings of SPIE  Volume: 9675  Article Number: 96751R  DOI: 10.1117/12.2199618  Published: 2015  

Abstract: High accuracy star map identification results are the basis of astronomical positioning. The traditional triangle star identification algorithm has a higher redundancy and a poor robustness to noise. Considering the specific requirements of the star map identification of the astronomical camera, in allusion to this default, proceeding with selection of guide stars, construction of guide star catalogue and realization of matching algorithm, a modified triangle algorithm based on traditional one is presented. With the proposed algorithm, the guide star is selected from astronomical durchmusterung. In order to speed up guide star indexing, the guide star catalogue is founded after dividing the sky using the overlapping rectangle method. The guide star sub-catalogue is constructed by the radius of guide triangle circumcircle and the two sides of guide triangle. The characteristic radius is used for indexing and sorted in an ascending order to improve the searching efficiency in the processing of star map identification. The matching scope of the angular distance is narrowed and the matching rate of angular distance is improved by the matching of the characteristics radius. If there exists redundancy, a normalized magnitude is used to eliminate it. Within the observing area of the real sky, the 1050 star maps continuously are calculated. The simulation results show that, the identification rate of this algorithm is greater than 97. 83% when the noise of position error is two pixels, and the average identification time is about 25. 07ms. Compared with the traditional triangle algorithm, this modified algorithm has a couple of advantages, including the smaller storage capacity of guide star catalogue, better robustness to position and magnitude error, higher rate of correcting star map identification and lower redundancy.

Accession Number: WOS:000363280200063

Conference Title: Conference on Applied Optics and Photonics (AOPC) - Image Processing and Analysis

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

ISSN: 0277-786X

ISBN: 978-1-62841-900-9

Record 45 of 125

Title: A portable swappable method scientific CMOS image data storage system

Author(s): Liu, WL (Liu Wen-long); Pi, HF (Pi Hai-feng); Hu, BL (Hu Bing-liang); Gao, JR (Gao Jia-rui)

Edited by: Liu S; Zhuang S; Lv D; Wang L; Zhang G; Petelin MI; Xiang L

Source: SELECTED PAPERS OF THE PHOTOELECTRONIC TECHNOLOGY COMMITTEE CONFERENCES  Book Series: Proceedings of SPIE  Volume: 9795  Article Number: 97950C  DOI: 10.1117/12.2208424  Published: 2015  

Abstract: In the field of deep space exploration, the detector needs high-speed data real-time transmission and large capacity storage. SATA( Serial advanced technology attachment) as a new generation of interface protocols, SATA interface hard disk has the advantages of with large storage capacity, high transmission rate, the cheap price, data is not lost when power supply drop, so it is suitable for used in high speed large capacity data storage system. This paper by using Kintex-7 XCE7K325T XILINK series FPGA, the data of scientific CMOS CIS2521F through the SATA controller is stored in the hard disk. If the hard disk storage is full, it will automatically switch to the next hard disk.

Accession Number: WOS:000369137800013

Conference Title: International Conference on Frontiers in Optical Imaging Technology and Applications / International Symposium on Terahertz Technology and Applications / International Symposium on Surface Topography and Optical Microscopy

Conference Date: 2015

Conference Location: PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Shanghai Sci & Technol, Chinese Acad Engn, Natl Nat Sci Fdn China, Harbin Inst Technol

ISSN: 0277-786X

ISBN: 978-1-5106-0168-0

Record 46 of 125

Title: Graded Index Porous Optical Fibers - Dispersion Management in Terahertz Range

Author(s): Ma, T (Ma, Tian); Markov, A (Markov, Andrey); Wang, LL (Wang, Lili); Skorobogatiy, M (Skorobogatiy, Maksim)

Book Group Author(s): IEEE

Source: 2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)  Book Series: Conference on Lasers and Electro-Optics  Published: 2015  

Abstract: Graded index porous fiber incorporating an air-hole array featuring variable air-hole diameters and inter-hole separations is proposed. We experimentally demonstrate smaller pulse distortion, larger bandwidth and higher excitation efficiency compared to fibers with uniform porosity.

Accession Number: WOS:000370627101281

Conference Title: Conference on Lasers and Electro-Optics (CLEO)

Conference Date: MAY 10-15, 2015

Conference Location: San Jose, CA

Author Identifiers:

ISSN: 2160-9020

ISBN: 978-1-55752-968-8

Record 47 of 125

Title: Optical System Design for Wide-angle Airborne Mapping Camera with Diffractive Optical Element

Author(s): Niu, HJ (Niu Hai-Jun); Zhang, J (Zhang Jian); Yan, AQ (Yan A-qi); Leng, HB (Leng Han-bing); Fei, JQ (Fei Jia-qi); Wu, DS (Wu Deng-shan); Cao, JZ (Cao Jian-zhong)

Edited by: Tian A; Asundi A; Liu W; Zhang C

Source: INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014)  Book Series: Proceedings of SPIE  Volume: 9449  Article Number: 94492N  DOI: 10.1117/12.2085042  Published: 2015  

Abstract: With the development of the digital airborne photo-grammetry technology, the more performances of the optical system for airborne mapping camera are required, such as the longer focal, the wider field of view (FOV), at the same time, the secondary spectrum correction becomes more important and difficult for the optical system design. A high performance optical system of airborne mapping camera with 200mm focus and2 omega=60 degrees FOV is designed in this paper. The range of work wavelength is from 430nm to 885nm. A two-layer HDOE with negative dispersive characteristic is used to eliminate the secondary spectrum in the process of optical system design. The diffraction efficiency of the designed two-layer HDOE is up to 90%. From the result of design, the MTFs in whole fields are over 0.5 at 90lp/mm, which shows that the system has a great image quality. Meantime, the thermal analysis is done at the temperature range between -20 degrees C and 40 degrees C, and the MTF curves of the system at-20 degrees C similar to 40 degrees C show that a great image quality is kept, which meets the design requirements.

Accession Number: WOS:000354183600094

Conference Title: International Conference on Photonics and Optical Engineering (icPOE)

Conference Date: OCT 13-15, 2014

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Technol Univ, Xian Jiaotong Univ, Xian Inst Opt & Precis Mech, Xian Inst Appl Opt, Nanyang Technol Univ, Ctr Opt & Laser Engn, Shaanxi Opt Soc, Shaanxi Prov Phys Soc, Opt & Photon Soc Singapore, SPIE

ISSN: 0277-786X

ISBN: 978-1-62841-565-0

Record 48 of 125

Title: All-optical Signal Processing Technique for Secure Optical Communication

Author(s): Qian, FC (Qian, Feng-chen); Su, B (Su, Bing); Ye, YL (Ye, Ya-lin); Zhang, Q (Zhang, Qian); Lin, SF (Lin, Shao-feng); Duan, T (Duan, Tao); Duan, J (Duan, Jie)

Edited by: Liao Y; Zhang W; Jiang D; Wang W; Brambilla G

Source: AOPC 2015: OPTICAL FIBER SENSORS AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 9679  Article Number: 96790P  DOI: 10.1117/12.2199635  Published: 2015  

Abstract: Secure optical communication technologies are important means to solve the physical layer security for optical network. We present a scheme of secure optical communication system by all-optical signal processing technique. The scheme consists of three parts, as all-optical signal processing unit, optical key sequence generator, and synchronous control unit. In the paper, all-optical signal processing method is key technology using all-optical exclusive disjunction (XOR) gate based on optical cross-gain modulation effect, has advantages of wide dynamic range of input optical signal, simple structure and so on. All-optical XOR gate composed of two semiconductor optical amplifiers (SOA) is a symmetrical structure. By controlling injection current, input signal power, delay and filter bandwidth, the extinction ratio of XOR can be greater than 8dB. Finally, some performance parameters are calculated and the results are analyzed. The simulation and experimental results show that the proposed method can be achieved over 10Gbps optical signal encryption and decryption, which is simple, easy to implement, and error-free diffusion.

Accession Number: WOS:000365190900025

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

ISSN: 0277-786X

ISBN: 978-1-62841-904-7

Record 49 of 125

Title: Demonstration of 20Gb/s Polarization-insensitive Wavelength Switching system for High-Speed Free-space Optical Network

Author(s): Qian, FC (Qian, Feng-Chen); Ye, YL (Ye, Ya-lin); Yu, W (Yu, Wen); Tao, D (Tao, Duan); Huan, F (Huan, Feng)

Edited by: Liao Y; Zhang W; Jiang D; Wang W; Brambilla G

Source: AOPC 2015: OPTICAL FIBER SENSORS AND APPLICATIONS  Book Series: Proceedings of SPIE  Volume: 9679  Article Number: 967908  DOI: 10.1117/12.2197788  Published: 2015  

Abstract: A 20Gb/s polarization-insensitive all-optical wavelength switching system for high-speed free-space optical communication (FSO) network is experimentally demonstrated All-optical wavelength conversion (AOWC) is implemented using four-wave mixing (FWM) by highly-nonlinear fiber (HNLF). In the experimental setup, a simple actively mode-locked fiber ring laser (AML-FRL) with repetition frequency from 1 to 15 GHz is used to generate eight 2.5Gb/s tributary signals, which are multiplexed into one 20Gb/s optical data stream. At the receiver, the 20 Gb/s OTDM data stream is demultiplexed down to 2.5 Gb/s via a polarization-insensitive FWM scheme. The whole space communication distance is over 10 meters in building hallway. The experimental results show that this system can stably run over 24 hours at 10(-9) BER level, thus the proposed architecture can work at higher rate with wavelength-division multiplexing (WDM) and high order modulation schemes.

Accession Number: WOS:000365190900008

Conference Title: Annual Conference of the Chinese-Society-for-Optical-Engineering on Applied Optics and Photonics, China (AOPC)

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE, Opt Soc, European Opt Soc, Opt Soc Korea

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-62841-904-7

Record 50 of 125

Title: Galvanometer Control System Design of Aerial Camera Motion Compensation

Author(s): Qiao, MR (Qiao, Mingrui); Cao, JZ (Cao, Jianzhong); Wang, HW (Wang, Huawei); Guo, YZ (Guo, Yunzeng); Hu, CC (Hu, Changchang); Tang, H (Tang, Hong); Niu, YF (Niu, Yuefeng)

Edited by: Xiangli B; Kim DW; Xue S

Source: AOPC 2015: TELESCOPE AND SPACE OPTICAL INSTRUMENTATION  Book Series: Proceedings of SPIE  Volume: 9678  Article Number: 967804  DOI: 10.1117/12.2197149  Published: 2015  

Abstract: Aerial cameras exist the image motion on the flight. The image motion has seriously affected the image quality, making the image edge blurred and gray scale loss. According to the actual application situation, when high quality and high precision are required, the image motion compensation (IMC) should be adopted. This paper designs galvanometer control system of IMC. The voice coil motor as the actuator has a simple structure, fast dynamic response and high positioning accuracy. Double-loop feedback is also used. PI arithmetic and Hall sensors are used at the current feedback. Fuzzy-PID arithmetic and optical encoder are used at the speed feedback. Compared to conventional PID control arithmetic, the simulation results show that the control system has fast response and high control accuracy.

Accession Number: WOS:000363283600004

Conference Title: Conference on Applied Optics and Photonics (AOPC) - Telescope and Space Optical Instrumentation

Conference Date: MAY 05-07, 2015

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, SPIE

ISSN: 0277-786X