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Department自适应光学技术研究室(八室)
Optimum parameters of image preprocessing method for Shack-Hartmann wavefront sensor in different SNR condition
Wei, Ping1,2,3,4; Li, Xinyang1,3; Luo, Xi1,3; Li, Jianfeng2
Source PublicationProceedings of SPIE - FOURTH SEMINAR ON NOVEL OPTOELECTRONIC DETECTION TECHNOLOGY AND APPLICATION
Volume10697
Pages1069742
2018
Language英语
ISSN0277-786X
DOI10.1117/12.2315582
Indexed BySCI ; Ei
WOS IDWOS:000435407700132
EI Accession Number20182805540044
SubtypeC
AbstractThe centroid method is commonly adopted to locate the spot in the sub-apertures in the Shack-Hartmann wavefront sensor (SH-WFS), in which preprocessing image is required before calculating the spot location due to that the centroid method is extremely sensitive to noises. In this paper, the SH-WFS image was simulated according to the characteristics of the noises, background and intensity distribution. The Optimal parameters of SH-WFS image preprocessing method were put forward, in different signal-to-noise ratio (SNR) conditions, where the wavefront reconstruction error was considered as the evaluation index. Two methods of image preprocessing, thresholding method and windowing combing with thresholding method, were compared by studying the applicable range of SNR and analyzing the stability of the two methods, respectively.
KeywordSH-WFS centroid method SNR Thresholding method Windowing method
EI KeywordsAdaptive optics ; Electric appliances ; Image processing ; Underwater acoustics ; Wavefronts
Conference Name4th Seminar on Novel Optoelectronic Detection Technology and Application4th Seminar on Novel Optoelectronic Detection Technology and Application
Conference DateOCT 24-26, 2017OCT 24-26, 2017
Conference PlaceNanjing, PEOPLES R CHINANanjing, PEOPLES R CHINA
EI Classification Number704.2 Electric Equipment ; 716.1 Information Theory and Signal Processing ; 741.1 Light/Optics ; 751.1 Acoustic Waves
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Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9128
Collection自适应光学技术研究室(八室)
Affiliation1.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China;
2.University of Electronic Science and Technology of China, Chengdu, Sichuan; 610054, China;
3.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China;
4.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Wei, Ping,Li, Xinyang,Luo, Xi,et al. Optimum parameters of image preprocessing method for Shack-Hartmann wavefront sensor in different SNR condition[C],2018:1069742.
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