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Performance evaluation of phase diversity wavefront sensing in obtaining high-resolution images
Ling, Zhang1,2; Hui, Zhao1; Fan, Xuewu1
2018
Conference Name10th International Conference on Digital Image Processing, ICDIP 2018
Source PublicationTenth International Conference on Digital Image Processing, ICDIP 2018
Volume10806
Conference Date2018-05-11
Conference PlaceShanghai, China
PublisherSPIE
Contribution Rank1
Abstract

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.

KeywordPhase Diversity Wave-front Sensing High-resolution Image Error Analysis
Department空间光学应用研究室
DOI10.1117/12.2502821
Indexed ByEI ; CPCI
ISBN9781510621992
Language英语
ISSN0277786X;1996756X
WOS IDWOS:000452819600107
EI Accession Number20183605779210
Citation statistics
Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30601
Collection空间光学应用研究室
Affiliation1.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
Recommended Citation
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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