Optimization method for the centroid sensing of Shack-Hartmann wavefront sensor

	Optimization method for the centroid sensing of Shack-Hartmann wavefront sensor
	Zhao F.; Huang W.; Xu W.; Yang T.
	2014
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	ISBN/10072276
卷号	43 期号:9 页码:3005-3009
摘要	In order to improve the centroid sensing accuracy of spot image of Shack-Hartmann wavefront sensor (S-H WFS), the error sources of centroid detection were discussed in the paper. The influence of detection window, threshold selection and centroid algorithm on centroid detection accuracy was analyzed. On this basis, detecting window selection method based on template match and adaptive threshold selection method based on single spot were proposed. The methods proposed in this paper were combined with the center of weight algorithm for improving the centroid detection accuracy. The accuracy with the comprehensive method increases 40% comparing with traditional method when signal-to-noise ratio(SNR) of the spot image of S-H WFS is more than 3. The methods was applied to a S-H WFS working in visible spectrum, the results showed that maximum centroid departure decreased from 0.83 pixel to 0.15 pixel. The work in this paper has a high value of practical application.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44239
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhao F.,Huang W.,Xu W.,et al. Optimization method for the centroid sensing of Shack-Hartmann wavefront sensor[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2014,43(9):3005-3009.
APA	Zhao F.,Huang W.,Xu W.,&Yang T..(2014).Optimization method for the centroid sensing of Shack-Hartmann wavefront sensor.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,43(9),3005-3009.
MLA	Zhao F.,et al."Optimization method for the centroid sensing of Shack-Hartmann wavefront sensor".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 43.9(2014):3005-3009.

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