High precision center measurement of far-field laser based onimproved Zernike moments

Xiang YU; Rongguo FU; Mingzhu HUANG; Jianpo GAO; Xing LYU; Lingyun MA; Huanan ZHANG; Qi YANG

doi:10.5768/JAO202344.0610011

Journal of Applied Optics, Volume. 44, Issue 6, 1244(2023)

High precision center measurement of far-field laser based onimproved Zernike moments

Xiang YU1... Rongguo FU1,*, Mingzhu HUANG1, Jianpo GAO1, Xing LYU1, Lingyun MA1, Huanan ZHANG1 and Qi YANG2 |Show fewer author(s)

Author Affiliations

¹School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

²Electric Power Research Institute, State Grid Shanxi Electric Power Co., Ltd., Taiyuan 030001, China

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Figures & Tables(6)

Fig. 1. Ideal step edge model

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Fig. 2. Two kinds of grayscale edge models

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Fig. 3. Experimental diagram of far-field laser spot center detection system

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Fig. 4. Circular mask and sliding diagram

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Fig. 5. Center offset of different algorithms at multi frame scenarios

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Table 1. Coordinate recognition of centers using different algorithms and errors

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Table 1. Coordinate recognition of centers using different algorithms and errors

算法	坐标	光斑1	光斑2	光斑3	光斑4	光斑5
文献[18]	标准坐标	(78,93)	(79,93)	(78,93)	(78,93)	(78,93)
质心法	坐标	(75.1424,	(74.8204,	(75.2993,	(76.5744,	(75.7874,
	坐标	91.9414)	91.9414)	92.2102)	91.3654)	92.7104)
	误差/pixel	3.047	4.259	2.813	2.169	2.231
传统Zernike矩方法	坐标	(76.2123,	(77.9677,	(75.9912,	(77.7795,	(76.8907,
	坐标	93.6194)	91.8535)	93.4039)	94.1819)	91.7429)
	误差/pixel	1.892	1.542	2.450	1.202	1.6765
本文算法	坐标	(78.3731,	(78.3854,	(78.3901,	(78.3546,	(78.3781,
	坐标	93.4190)	93.4112)	93.4050)	93.4190)	93.4052)
	误差/pixel	0.561	0.563	0.562	0.535	0.554

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Xiang YU, Rongguo FU, Mingzhu HUANG, Jianpo GAO, Xing LYU, Lingyun MA, Huanan ZHANG, Qi YANG. High precision center measurement of far-field laser based onimproved Zernike moments[J]. Journal of Applied Optics, 2023, 44(6): 1244

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