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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 (United Kingdom)
出版日期: 2013
卷号: 15, 期号:5, 页码:055702
学科分类: Adaptive optics - Algorithms - Fourier transforms - Stress intensity factors
DOI: 10.1088/2040-8978/15/5/055702
文章类型: 期刊论文
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.
收录类别: SCI ; Ei
项目资助者: National Major Scientific Equipment program [2012YQ120080] ; National Science Foundation of China [61108082] ; Knowledge Innovation Program of the Chinese Academy of Sciences [KGCX2-Y11-920] ; West Light Foundation of the Chinese Academy of Sciences
语种: 英语
WOS记录号: WOS:000319555500043
ISSN号: 20408978
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6357
Appears in Collections:自适应光学技术研究室(八室)_期刊论文

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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

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 (United Kingdom),2013,15(5):055702.
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