| Department | 自适应光学技术研究室（八室） |
| Improvement of correlation-based centroiding methods for point source Shack-Hartmann wavefront sensor | |
| Li, Xuxu1,2; Li, Xinyang1; wang, Caixia1 | |
| Source Publication | OPTICS COMMUNICATIONS
 |
| Volume | 411Pages:187-194 |
| 2018-05-15 | |
| Language | 英语 |
| ISSN | 0030-4018 |
| DOI | 10.1016/j.optcom.2017.11.059 |
| Indexed By | SCI ; Ei |
| WOS ID | WOS:000418646600031 |
| EI Accession Number | 20175004525912 |
| Subtype | J |
| Abstract | This paper proposes an efficient approach to decrease the computational costs of correlation-based centroiding methods used for point source Shack-Hartmann wavefront sensors. Four typical similarity functions have been compared, i.e. the absolute difference function (ADF), ADF square (ADF(2)), square difference function (SDF), and cross-correlation function (CCF) using the Gaussian spot model. By combining them with fast search algorithms, such as three-step search (TSS), two-dimensional logarithmic search (TDL), cross search (CS), and orthogonal search (OS), computational costs can be reduced drastically without affecting the accuracy of centroid detection. Specifically, OS reduces calculation consumption by 90%. A comprehensive simulation indicates that CCF exhibits a better performance than other functions under various light-level conditions. Besides, the effectiveness of fast search algorithms has been verified. (C) 2017 Elsevier B.V. All rights reserved. |
| Keyword | Shack-Hartmann wavefront sensor Centroiding methods Correlation methods Point source Fast search algorithms |
| EI Keywords | Functions ; Learning algorithms ; Wavefronts |
| EI Classification Number | 921 Mathematics ; 922.2 Mathematical Statistics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ioe.ac.cn/handle/181551/9333 |
| Collection | 自适应光学技术研究室（八室） |
| Affiliation | 1.The Key Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 2.University of Chinese Academy of Sciences, Beijing; 100039, China |
| Recommended Citation GB/T 7714 | Li, Xuxu,Li, Xinyang,wang, Caixia. Improvement of correlation-based centroiding methods for point source Shack-Hartmann wavefront sensor[J]. OPTICS COMMUNICATIONS,2018,411:187-194. |
| APA | Li, Xuxu,Li, Xinyang,&wang, Caixia.(2018).Improvement of correlation-based centroiding methods for point source Shack-Hartmann wavefront sensor.OPTICS COMMUNICATIONS,411,187-194. |
| MLA | Li, Xuxu,et al."Improvement of correlation-based centroiding methods for point source Shack-Hartmann wavefront sensor".OPTICS COMMUNICATIONS 411(2018):187-194. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2018-2100.pdf（2010KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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