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题名:
Centroid offset estimation in the Fourier domain for a highly sensitive Shack-Hartmann wavefront sensor
作者: Wei, Ling1,2; Shi, Guohua1,2; Lu, Jing2; Yang, Jinsheng1,2; Li, Xiqi1,2; Zhang, Yudong2
刊名: JOURNAL OF OPTICS
出版日期: 2013-05-01
卷号: 15, 期号:5
关键词: offset estimation ; Fourier domain ; Shack-Hartmann wavefront sensor
文章类型: Article
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.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: ADAPTIVE OPTICS ; ALGORITHM ; DENSITY
收录类别: SCI
语种: 英语
WOS记录号: WOS:000319555500043
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1246
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China

Recommended Citation:
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,2013,15(5).
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