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Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor
Wei, Ling1,2; Shi, Guohua1,2; Lu, Jing2; Yang, Jinsheng1,2; Li, Xiqi1,2; Zhang, Yudong2
Source PublicationJournal of Optics (United Kingdom)
Volume15Issue:5Pages:055702
2013
Language英语
ISSN20408978
DOI10.1088/2040-8978/15/5/055702
Indexed BySCI ; Ei
WOS IDWOS:000319555500043
Subtype期刊论文
AbstractThe 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.; 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.
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6357
Collection自适应光学技术研究室(八室)
Affiliation1. 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
Recommended Citation
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.
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