Improved vector-extrapolation-based Richardson–Lucy algorithm used for wavefront coded imaging
文献类型:期刊论文
作者 | Zhao, Hui1; Xia, Jingjing1,2; Zhang, Ling1,3; Fan, Xuewu1 |
刊名 | Applied Optics |
出版日期 | 2019-05-01 |
卷号 | 58期号:13页码:3630-3638 |
ISSN号 | 1559128X;21553165 |
DOI | 10.1364/AO.58.003630 |
产权排序 | 1 |
英文摘要 | The Richardson–Lucy (RL) algorithm is a well-known nonlinear restoration method and has been widely applied in the fields of astronomical image restoration, microscopic image restoration, and so on because of its capability of generating high-quality restoration results and potential in realizing super-resolution. However, when being applied to restore the wavefront coded blurry images, the classical RL algorithm converges very slowly and has to be iterated many times before obtaining a satisfactory result, which severely prohibits its real-time application. Vector-extrapolation-based RL algorithm was invented to solve this problem, but the noise amplification increases fast, and additional post-processing is needed to further improve the signal-to-noise ratio. Therefore, in this paper, an improved RL algorithm is proposed by introducing an exponential modified correction term into the framework of the original vector-extrapolation-based RL algorithm. It not only results in a bigger iteration step, which ensures a faster convergence can be obtained, but also the noise amplification is effectively prohibited. Besides that, we design a structure-similarity-index-metric-based stopping criterion, based on which the optimum number of iterations for each color channel is obtained. Experimental results reveal that the total iterations decreases approximately 78.9%, and the restored images demonstrate a superior visual quality without denoising additionally. ? 2019 Optical Society of America |
语种 | 英语 |
出版者 | OSA - The Optical Society |
WOS记录号 | WOS:000467539700055 |
源URL | [http://ir.opt.ac.cn/handle/181661/31499] |
专题 | 西安光学精密机械研究所_空间光学应用研究室 |
通讯作者 | Zhao, Hui |
作者单位 | 1.Space Optics Lab, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710019, China; 2.Shaanxi Normal University, Xi’an; 710119, China; 3.University of Chinese Academy of Sciences, Beijing; 100049, China |
推荐引用方式 GB/T 7714 | Zhao, Hui,Xia, Jingjing,Zhang, Ling,et al. Improved vector-extrapolation-based Richardson–Lucy algorithm used for wavefront coded imaging[J]. Applied Optics,2019,58(13):3630-3638. |
APA | Zhao, Hui,Xia, Jingjing,Zhang, Ling,&Fan, Xuewu.(2019).Improved vector-extrapolation-based Richardson–Lucy algorithm used for wavefront coded imaging.Applied Optics,58(13),3630-3638. |
MLA | Zhao, Hui,et al."Improved vector-extrapolation-based Richardson–Lucy algorithm used for wavefront coded imaging".Applied Optics 58.13(2019):3630-3638. |
入库方式: OAI收割
来源:西安光学精密机械研究所
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