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• 光电技术研究所 [1]
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• OAI收割 [10]

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• 期刊论文 [7]
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浏览/检索结果: 共10条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Timesaving phase retrieval approach based on difference map normalization and fast iterative algorithm 期刊论文  OAI收割 Optics and Lasers in Engineering, 2019, 卷号: 121, 页码: 18-28 作者:  Y.Zhang;  X.B.Tian;  R.G.Liang   |  收藏  |  浏览/下载：30/0  |  提交时间：2020/08/24 Phase shifting algorithm,Iterative algorithm,Difference ma,normalization,Phase shift,Interferometry,principal component analysis,wave-front reconstruction,shifting,interferometry,extraction,interferograms,vibration,errors,Optics   Theoretical and experimental study of two-phase-stepping approach for hard X-ray differential phase contrast imaging 期刊论文  OAI收割 acta phys. sin., 2013, 卷号: 62, 期号: 6 作者:  Du Yang;  Lei Yao-Hu;  Liu Xin;  Guo Jin-Chuan;  Niu Han-Ben 收藏  |  浏览/下载：20/0  |  提交时间：2015/05/29 grating interferometer  X-ray phase contrast imaging  two-stepping phase shift algorithm   Error compensation of four and five buckets wavefront extraction algorithms in phase-shifting interferometer 期刊论文  OAI收割 OPTIK, 2013, 卷号: 124, 期号: 22, 页码: 5624-5627 作者:  Zhu, Mingxin;  Bai, Fuzhong;  Gan, Shiming;  Huang, Kaizheng;  Huang, Linhai 收藏  |  浏览/下载：19/0  |  提交时间：2015/04/17 Phase-shifting algorithm  Phase extraction  Phase shift deviation  Detector nonlinearity   The movement estimation of target and background by fourier phase spectrum difference (EI CONFERENCE) 会议论文  OAI收割 2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China 作者:  Zhang X.;  Zhang X.;  Zhang X.;  Wang J.;  Zhang S. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 An algorithm for estimating displacement of the moving target and background by shift theory of Fourier transform is presented. According to the relation between the change and the Fourier transform of image sequence  the method employs the displacement value of the moving target and background by the difference of Fourier phase spectrum. The algorithm estimates the movements from the whole field of the image with excellent global property. This paper provides the calculus and experiments of the algorithm which show the accuracy of 1 pixel. 2010 IEEE.   结构光系统标定方法研究 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2008 作者:  高伟 收藏  |  浏览/下载：87/0  |  提交时间：2015/09/02 三位轮廓测量  结构光系统  便携式结构光系统  相机标定  投影仪标定  相位移动算法  模块补偿算法  3D shape measurement  structured light system  portable structured light system  camera calibration  projector calibration  phase shift algorithm  compensating modules algorithm   A new blind-equalization algorithm for an FIR SIMO system driven by MPSK signal 期刊论文  OAI收割 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2007, 卷号: 54, 期号: 3, 页码: 227-231 作者:  Gu, Nong;  Xiang, Yong;  Tan, Min;  Cao, Zhiqiang 收藏  |  浏览/下载：25/0  |  提交时间：2015/11/08 blind system equalization  constant modulus algorithm  finite-impulse response (FIR) single-input multiple-output (SIMO) system  M-ary phase-shift-keying (MPSK) signal   Displacement estimation by the phase-shiftings of fourier transform in present white noise (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wu Y.-H. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 Displacement estimation is a fundamental problem in Real-time video image processing. It can be typically approached by theories based on features in spatial domain. This paper presents an algorithm which improves the theory for estimating the moving object's displacement in spatial domain by its Fourier transform frequency spectrum. Because of the characters of Fourier transform  the result is based on all the features in the image. Utilizing shift theorem of Fourier transform and auto-registration  the algorithm employs the phase spectrum difference in polar coordinate of two frame images sequence with the moving target1  2. The method needn't transform frequency spectrum to spatial domain after calculation comparing with the traditional algorithm which has to search Direc peak  and it reduces processing time. Since the technique proposed uses all the image information  including all the white noise in the image especially  and it's hard to overcome the aliasing from noises  but the technique can be an effective way to analyze the result in little white noise by the different characters between high and low frequency bands. It can give the displacement of moving target within 1 pixel of accuracy. Experimental evidence of this performance is presented  and the mathematical reasons behind these characteristics are explained in depth. It is proved that the algorithm is fast and simple and can be used in image tracking and video image processing.   Methods for removal of spurious reflection effect on phase-shifting interferometry 期刊论文  OAI收割 j. opt. a-pure appl. opt., 2006, 卷号: 8, 期号: 8, 页码: 617, 624 钟向红 收藏  |  浏览/下载：1533/220  |  提交时间：2009/09/18 spurious reflection  phase retrieval  phase-shift algorithm  phase-shifting interferometry   A four-frame phase shift method insensitive to phase shifter nonlinearity 期刊论文  OAI收割 j. opt. a-pure appl. opt., 2006, 卷号: 8, 期号: 3, 页码: 300, 303 钟向红 收藏  |  浏览/下载：1963/558  |  提交时间：2009/09/18 phase shifting interferometry  phase shift algorithm  phase retrieval  phase shift calibration   NMR experimental realization of seven-qubit D-J algorithm and controlled phase-shift gates with improved precision 期刊论文  OAI收割 CHINESE SCIENCE BULLETIN, 2003, 卷号: 48, 期号: 3, 页码: 239-243 作者:  Wei, DX;  Luo, J;  Sun, XP;  Zeng, XZ;  Yang, XD 收藏  |  浏览/下载：27/0  |  提交时间：2015/12/03 D-J quantum algorithm  controlled phase-shift gate with improved precision  NMR experiment