第19卷
第6期
2011年6月
文章编号
1004-924X(2011)06-1384-07
光学精密工程
Optics and Precision Engineering
双相机相位差异散斑成像技术
Vol. 19 No.6
Jun.2011
王斌1，汪宗洋1.2，王建立"，赵金宇1，吴元昊"，张世学"，董磊，文明1
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033;2.中国科学院研究生院，北京100039）摘要：开展了用相位差异散斑技术实现图像采集和图像恢复的实验，在实验室环境下设计了针对扩展目标的相位差异散斑成像双相机实验平台。用两台外触发模式的相机同步采集焦面和指定离焦面上的短眼光图像.用变形镜构造光学系统误差，用强力热吹风机模拟大气满流。分析了用多台相机与单台相机相比引入的不同间题，给出了多通道之间相面施转间题的处理方法和多通道之间读出噪声不一致时的相位差异散班法的目标函数；验证了相位差异散斑法提高围像分辨率的能力。分别用采集到的单慎，3赖，10慎图像进行PDS运算并分析结果，与基本的相位差异法相比，多赖相位差异散斑戏像所恢复的图像质量有很大的提高。
关
键
词：相位差异；款斑成像；液前探测；图像恢复；相位估计
中图分类号：TP391.4;0436.1
文献标识码：A
doi:10, 3788/OPE. 20111906. 1384
Phase-diversespeckleimagingwithtwocameras WANG Bin'' , WANG Zong-yang-2, WANG Jian-li', ZHAO Jin-yu',
WU Yuan-hao',ZHANG Shi-xue',DONG Lei',WEN Ming(1.Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033,China;
2.Graduate University of Chinese Academy of Sciences,Beijing 100039,China)
Corresponding author,E-mail:eatingbeen@sohu.com
Abstract: Image capaturing and image restoration implentmented by Phase-diverse Speckle(PDS) were researched in this paper. A PDS experimental platform with two cameras was designed for the extend-ed object in our lab. Two cameras were taken to capture the short-expose images in focus and defocus simultaneously and a deformable mirror was used to construct optics system error, Then an electrical dryer was used to simulate the atmosphere turbulence. The problems from the two cameras were com pared with that from single camera. Furthermore, the PD destination function was derived when the two cameras have different readout noises and how to solve the image rotation between the multi-chan nels was given. Finally, the capability of PDS method for image resolution improvement was valida ted. The PDS processes by single frame, 3 frames and 1o frames were execussed, respectively, and results show that the PDS technique can generate images with highly improved quality compared with
收稿日期：2010-10-12；修订日期：2010-10-29，
基金项目：国家863高技术研究发展计划资助项目（No2009AA8080603）