中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Investigation of dwell time based on lucy-richardson algorithm and gercherg surface continuation algorithm 会议论文  OAI收割
Shanghai, China, 2020-06-29
作者:  
Qian, XinJie;  Ma, Zhen;  Yao, Yongsheng;  Shen, Le
  |  收藏  |  浏览/下载:21/0  |  提交时间:2021/03/04
Improved vector extrapolation based Richardson-Lucy algorithm used for wavefront coded imaging and experimental demonstration 会议论文  OAI收割
Munich, Germany, 2019-06-24
作者:  
Zhao, Hui;  Xia, Jingjing;  Zhang, Ling;  Yu, Congcong;  Fan, Xuewu
  |  收藏  |  浏览/下载:44/0  |  提交时间:2019/11/27
气动光学效应图像复原算法与应用研究 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, 2012
作者:  
赵博
收藏  |  浏览/下载:91/0  |  提交时间:2015/09/02
Image motion compensation for a certain aviation camera based on Lucy-Richardson algorithm (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
Zhong C.; Fu J.; Ding Y.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
Design and image restoration research of a cubic-phase-plate system (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
Wave-front coding technology is a novel jointly optical and digital imaging technology which can greatly extend the depth of focus of optical systems. The image restoration process is an important part of wave-front coding technology. Using wave-front coding makes the modulation transfer function(MTF) values of the optical systems change little over a range of several times the depth of focus  which means the system MTF is quite insensitive to defocus  and there is no zero in the passband. So we can design a single filter for the restoration of images in different defocus positions. However  it's hard to avoid noise during image acquisition and transmission processes. These noises will be amplified in the image restoration  especially in the high frequency part when the MTF drop is relatively low. The restoration process significantly reduces the system signal to noise ratio this way. Aimed at the problem of noise amplification  a new algorithm was proposed which incorporated wavelet denoising into the iterative steps of Lucy-Richardson algorithm. Better restoration results were obtained through the new algorithm  effectively solving the noise amplification problem of original LR algorithm. Two sets of identical triplet imaging systems were designed  in one of which the cubic-phase-plate was added. Imaging experiments of the manufactured systems were carried  and the images of a traditional system and a wave-front coded system before and after decoding were compared. The results show that the designed wave-front coded system can extend the depth of focus by 40 times compared with the traditional system while maintaining the light flux and the image plane resolution. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Restoration of pinhole images using Lucy-Richardson algorithm 期刊论文  OAI收割
acta physica sinica, 2006, 卷号: 55, 期号: 5, 页码: 2364-2370
作者:  
Kong, XL;  Li, YT;  Yuan, XH;  Yu, QZ;  Zheng, ZY
收藏  |  浏览/下载:16/0  |  提交时间:2015/08/18