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The flat-field method based on rotated images for FY-3E/X-EUVI 期刊论文
Frontiers in Physics, 2022, 卷号: 10, 页码: 7
作者:  G. X. Ding;  K. Wu;  L. P. He;  B. Chen and F. Liu
收藏  |  浏览/下载：0/0  |  提交时间：2023/06/14
Image motion of remote sensing camera with wide field of view over the Antarctic and Arctic 期刊论文
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021, 卷号: 14, 页码: 3475-3484
作者:  J. Han;  X. Yang;  W. Yue;  T. Xu;  S. Wang
收藏  |  浏览/下载：2/0  |  提交时间：2022/06/13
Analytical method for the transformation of Zernike polynomial coefficients for scaled, rotated, and translated pupils 期刊论文
Applied Optics, 2018, 卷号: 57, 期号: 34, 页码: F22-F30
作者:  Li, L.;  Zhang, B.;  Xu, Y. S.;  Wang, D. J.
收藏  |  浏览/下载：3/0  |  提交时间：2019/09/17
Dynamic modulation transfer function analysis and research of image rotation for aerial camera 期刊论文
Guangxue Xuebao/Acta Optica Sinica, 2017, 卷号: 37, 期号: 2
作者:  Liu, C.;  Y. Ding;  D. Tian;  Y. Du and C. Sun
收藏  |  浏览/下载：11/0  |  提交时间：2018/06/13
大口径光学平面镜面形检测技术研究 学位论文
博士: 中国科学院大学, 2014
朱硕
收藏  |  浏览/下载：152/0  |  提交时间：2014/08/21
Recognition technology of large-scale hybrid-distortion target 期刊论文
Guangzi Xuebao/Acta Photonica Sinica, 2014, 卷号: 43, 期号: 9
Ren B.; Ma J.; Lan L.; Wang W.-S.
收藏  |  浏览/下载：12/0  |  提交时间：2015/04/24
A comprehensive genetic algorithm for design optimization of Z-bar loader working mechanism 期刊论文
Journal of Mechanical Science and Technology, 2013, 卷号: 27, 期号: 11
Shen J.; Wang G.; Bi Q.; Qu J.
收藏  |  浏览/下载：16/0  |  提交时间：2014/05/14
Displacement estimation by the phase-shiftings of fourier transform in present white noise (EI CONFERENCE) 会议论文
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Wu Y.-H.; Yu Q.-Y.
收藏  |  浏览/下载：16/0  |  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.  
Polar-coordinate laser writer: analysis of exposure dose distribution 会议论文
2002
Xie Y. J.; Lu Z. W.; Li F. Y.; Weng Z. C.
收藏  |  浏览/下载：11/0  |  提交时间：2013/03/28

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