Distance-Power Index Weighted Centroid Detection Algorithm for Shack-Hartmann Wavefront Sensors

Rui Ge; Wen Shen; Chao Liu; Zhouping Su; Huaxin Zhu; Dayu Li; Xinghai Lu; Quanquan Mu; Zhaoliang Cao; Li Xuan; Lifa Hu

doi:10.3788/LOP55.040401

Journals >Laser & Optoelectronics Progress >Volume 55 >Issue 4 >Page 040401 > Article

Laser & Optoelectronics Progress
Vol. 55, Issue 4, 040401 (2018)

Distance-Power Index Weighted Centroid Detection Algorithm for Shack-Hartmann Wavefront Sensors

Rui Ge¹, Wen Shen¹, Chao Liu¹, Zhouping Su¹, Huaxin Zhu¹, Dayu Li¹, Xinghai Lu¹, Quanquan Mu¹, Zhaoliang Cao¹, Li Xuan¹, and Lifa Hu¹

Author Affiliations

¹ Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, School of Science, Jiangnan University, Wuxi, Jiangsu 214122, China

¹ State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China

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DOI: 10.3788/LOP55.040401 Cite this Article Set citation alerts

Rui Ge, Wen Shen, Chao Liu, Zhouping Su, Huaxin Zhu, Dayu Li, Xinghai Lu, Quanquan Mu, Zhaoliang Cao, Li Xuan, Lifa Hu. Distance-Power Index Weighted Centroid Detection Algorithm for Shack-Hartmann Wavefront Sensors[J]. Laser & Optoelectronics Progress, 2018, 55(4): 040401 Copy Citation Text

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Fig. 1. Simulated light spot and its image on CCD. (a) Original light spot; (b) light spot without noise; (c) light spot with noise

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Calculation error of each algorithm under different cases. (a) Variation of calculation error with SNR; (b) variation of calculation error with the moving distance of light spot; (c) variation of calculation error with CCD sampling frequency; (d) variation of calculation error with spot size

Fig. 2. Calculation error of each algorithm under different cases. (a) Variation of calculation error with SNR; (b) variation of calculation error with the moving distance of light spot; (c) variation of calculation error with CCD sampling frequency; (d) variation of calculation error with spot size

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Algorithm	Variable
Algorithm	SNR	Moving distance	CCD sampling frequency	Spot size
ATCG	6.2830	6.7298	2.2046	3.2447
GCG	3.8337	4.9326	1.3469	2.0478
PCG	6.0810	6.5736	2.1522	3.2113
DPCG	1.0155	1.3818	0.3588	0.7205

Table 1. Average error of each algorithm under different variablespixel

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