Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 自适应光学技术研究室（八室）

	Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor
	Wei, Ling 1,2; Shi, Guohua 1,2; Lu, Jing 2; Yang, Jinsheng 1,2; Li, Xiqi 1,2; Zhang, Yudong 2
刊名	Journal of Optics (United Kingdom)
	2013
卷号	15 期号:5 页码:055702
ISSN号	20408978
中文摘要	The estimation of the centroid offset can have an effect on the accuracy of wavefront measurements conducted by highly sensitive Shack-Hartmann wavefront sensors. In this paper, a novel offset estimation algorithm processed in the Fourier domain is proposed. This method can be used to process the offset estimation in the Fourier domain and is efficient in noise suppression. The principle of the algorithm is described in detail. Comparisons between the technique and two other widely used algorithms, the best-threshold center of gravity algorithm and the correlation algorithm, are performed theoretically using numerical simulation and experimentally using a Shack-Hartmann wavefront sensor. The results show that the proposed offset estimation algorithm is unbiased, as robust as the correlation algorithm, as fast as the best-threshold center of gravity algorithm, and achieves a good balance between precision and speed. © 2013 IOP Publishing Ltd.
英文摘要	The estimation of the centroid offset can have an effect on the accuracy of wavefront measurements conducted by highly sensitive Shack-Hartmann wavefront sensors. In this paper, a novel offset estimation algorithm processed in the Fourier domain is proposed. This method can be used to process the offset estimation in the Fourier domain and is efficient in noise suppression. The principle of the algorithm is described in detail. Comparisons between the technique and two other widely used algorithms, the best-threshold center of gravity algorithm and the correlation algorithm, are performed theoretically using numerical simulation and experimentally using a Shack-Hartmann wavefront sensor. The results show that the proposed offset estimation algorithm is unbiased, as robust as the correlation algorithm, as fast as the best-threshold center of gravity algorithm, and achieves a good balance between precision and speed. © 2013 IOP Publishing Ltd.
学科主题	Adaptive optics - Algorithms - Fourier transforms - Stress intensity factors
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000319555500043
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/6357]
专题	光电技术研究所_自适应光学技术研究室（八室）
作者单位	1.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China 2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
推荐引用方式 GB/T 7714	Wei, Ling,Shi, Guohua,Lu, Jing,et al. Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor[J]. Journal of Optics (United Kingdom),2013,15(5):055702.
APA	Wei, Ling,Shi, Guohua,Lu, Jing,Yang, Jinsheng,Li, Xiqi,&Zhang, Yudong.(2013).Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor.Journal of Optics (United Kingdom),15(5),055702.
MLA	Wei, Ling,et al."Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor".Journal of Optics (United Kingdom) 15.5(2013):055702.