J4 ›› 2010, Vol. 48 ›› Issue (06): 1013-1017.
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JING Wenbo1, DUAN Jin2, WANG Xiaoman2, ZHAO Si2, XU Hao2, JIANG Huilin1
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Abstract:
The centroid detection errors of four methods of centroid detection algorithm about ShackHartmann array spots were compared at the same SNR, during which not only the centroid detection error but also the velocity of detection was taken into account. The experiment results indicate that IWCa has less detection error (CEE<0.5) although the SNR is lower than 5 and the velocity is also great. In consideration of centroid detection error and detection rate, centroid detection accuracy and rapidity were effectively improved.
Key words: ShackHartmann wavefront sensor; centroid algorithm; centroid detection error; signal noise ratio; time complexity
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JING Wen-Bo, DUAN Jin, WANG Xiao-Man, DIAO Sai, XU Hao, JIANG Hui-Lin. Comparison of ShackHartmann Array Spot CentroidDetection Errors[J].J4, 2010, 48(06): 1013-1017.
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http://xuebao.jlu.edu.cn/lxb/EN/Y2010/V48/I06/1013
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