摘要
介绍基于相位差法图像恢复的原理；搭建以鉴别率板为目标物，牛顿望远镜为成像系统的实验装置，并用热吹风模拟大气扰动对成像光路进行干扰，分别采集焦面和离焦面的图像；运用相位差法对图像进行恢复，并且以对比度为标准与维纳滤波图像恢复的结果进行比较。结果表明：当成像系统存在大像差，或者受大气扰动较严重时，相位差法的图像恢复效果显著，优于维纳滤波的图像恢复效果。
The principle of image restoration based on the phase diversity is introduced. The experimental setup is built where the resolution test chart is imaged by the Newtonian telescope. The focal and defocal images are collected with the interruption of atmosphere turbulence which is modeled by the hot wind from the hair drier, the two images are used to restore the blurred image with the phase diversity. Using contrast as the criterion, the quality of the restored images is compared between the phase diversity and the Wiener filtering methods. The results show that in the presence of large aberration or strong atmosphere disturbance, the image restoration based on the phase diversity is remarkably effective and performs even better than the Wiener filtering method.
作者
罗建文
吴泉英
范君柳
陈宝华
LUO Jianwen1, WU Quanying1,2 , FAN Junliu1,2 , CHEN Baohua1,2.(1. Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Mathematics and Physics, Suzhou University of Science and Technology, Suzhou 215009, China; 2. Graduate Practice Station in Soochow Mason Optics Co. , Ltd. , Suzhou 215028, Chin)
出处
《激光杂志》
北大核心
2018年第5期49-52,共4页
Laser Journal
基金
国家自然科学基金(No.61378056)
江苏省大学生创新创业训练省级重点项目(No.201610332007Z)
江苏省企业研究生工作站(No.2015-577)
苏州科技大学科研基金青年项目(No.XKQ201614)
关键词
应用光学
相位差法
图像恢复
维纳滤波
applied optics
phase diversity
image restoration
Wiener filtering
