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Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting
其他题名基于二维各向异性高斯拟合评价探测相机的成像质量
Li, Kun; Zhao, Jian-Ke; Chen, Yong-Quan; Xue, Xun; Duan, Ya-Xuan; Cao, Kun
作者部门检测技术研究中心
2017-12-01
发表期刊Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN1004924X
卷号25期号:12页码:3187-3194
产权排序1
摘要To evaluate quantitatively the image quality of a spot-detecting camera, a 2D anisotropic Gaussian fitting method was proposed. A spot-detecting camera was used to collect the infinity point target coming from a star simulator, and a certain area of energy distribution was obtained. Based on the correlation of the Gaussian energy distribution and the original distribution, this energy distribution was used in anisotropic Gaussian fitting to solve the parameters such as Gaussian radius and anisotropic factor. Then, the size of 80% of the energy was obtained by numerical integration. The experimental results show that the background threshold and anisotropic factor are optimized automatically and the influence of the noise on test results is reduced since the correlation is introduced. Moreover, the introduction of anisotropic factors, evaluation of pixel-phase error and the effect of optical system aberration on the imaging quality of the camera can be used as the testing condition criterion for defocused spots. The experimental results show that the repeatability of equivalent area circle diameter for the defocused spots is 0.15 pixel under the crisscross-shaped condition and that is 0.19 pixel under the farmland-shaped condition, respectively. The proposed method implements the defocused spot test by spot-detecting cameras, and also controls better imaging quality. © 2017, Science Press. All right reserved.

DOI10.3788/OPE.20172512.3187
收录类别EI ; CSCD
语种中文
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/30787
专题检测技术研究中心
作者单位Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an,710119, China
推荐引用方式
GB/T 7714
Li, Kun,Zhao, Jian-Ke,Chen, Yong-Quan,et al. Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(12):3187-3194.
APA Li, Kun,Zhao, Jian-Ke,Chen, Yong-Quan,Xue, Xun,Duan, Ya-Xuan,&Cao, Kun.(2017).Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(12),3187-3194.
MLA Li, Kun,et al."Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.12(2017):3187-3194.
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