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Performance evaluation of phase diversity wavefront sensing in obtaining high-resolution images
Ling, Zhang1,2; Hui, Zhao1; Fan, Xuewu1
2018
会议名称10th International Conference on Digital Image Processing, ICDIP 2018
会议录名称Tenth International Conference on Digital Image Processing, ICDIP 2018
卷号10806
会议日期2018-05-11
会议地点Shanghai, China
出版者SPIE
产权排序1
摘要Phase diversity wave-front sensing technique (PD) is a widely known estimation method of wave-front deformation of optical imaging system. Base on PD, high-resolution image could be obtained by eliminating the influence of wave-front deformation through online or offline restoration. However, there are a variety of errors that could affect the accuracy and efficiency in obtaining wave-front estimation and in reconstructing images. Hence in this paper, a large number of simulations are carried out to evaluate the performance of PD considering five major factors including the value of introduced defocus, the defocus error, the noise level, the scale of wave-front aberration, and the size of the images. Two criteria are adopted to do the evaluation. One is based on consistency between the estimated wave-front and the purposely introduced one. The other is based on the accuracy of reconstructed images. The results demonstrate that the introduced defocus value should be controlled in the range of 0.2 λ -1.2 λ , Gaussian noise level should be less than 0.0005, wave-front aberration should be in the range of 0.3 λ -1.2 λ , and defocus error should be controlled in the range of -50μm - -10μm (corresponding to -0.0988 λ to -0.0198 λ ). Besides those, as long as the size of the restored image is less than 128*128 pixels, the total estimation and reconstruction time will not exceed 5.96s. © 2018 SPIE.
作者部门空间光学应用研究室
DOI10.1117/12.2502821
收录类别EI
ISBN号9781510621992
语种英语
ISSN号0277786X
EI入藏号20183605779210
引用统计
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/30601
专题空间光学应用研究室
作者单位1.Space Optics Lab, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science, Xi'an; 710019, China;
2.University of Chinese, Academy of Sciences, Beijing; 100049, China
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GB/T 7714
Ling, Zhang,Hui, Zhao,Fan, Xuewu. Performance evaluation of phase diversity wavefront sensing in obtaining high-resolution images[C]:SPIE,2018.
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