Assessment of image quality for spot-detecting camera with anisotropic Gaussian fitting
文献类型：期刊论文
| 作者 | Li, Kun; Zhao, Jian-Ke ; Chen, Yong-Quan; Xue, Xun; Duan, Ya-Xuan; Cao, Kun
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| 刊名 | Guangxue Jingmi Gongcheng/Optics and Precision Engineering
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| 出版日期 | 2017-12-01 |
| 卷号 | 25期号:12页码:3187-3194 |
| ISSN号 | 1004924X |
| DOI | 10.3788/OPE.20172512.3187 |
| 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 |
| 产权排序 | 1 |
| 英文摘要 | 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. |
| 语种 | 中文 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/30787]  |
| 专题 | 西安光学精密机械研究所_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. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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