图像上散斑的消除  

REMOVING THE SPECKLE ON THE IMAGE

作　　者：尹宝银[1] 戴海涛[1] 王应宗[1] 

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《咸阳师范学院学报》2002年第4期16-19,共4页Journal of Xianyang Normal University

摘　　要：由各种原因造成图像上的随机分布斑点我们统称之为图像上的散斑。本文提出了利用4F系统在频谱面上用可运动的有限孔径对频谱进行扫描的方法来消除已固化在图像上的散斑 ,并对此方法进行了理论分析和实验验证 ,从而得到一个有效可行的消斑方法。We call the irregular speckle in the image as the imaging speckle while the speckle eχists in all kinds of conditions.ln this paper,we investigated the method to eliminate the imaging speckle which has formed and solidified on the image.By moving the limited window to scan the plane of the spacefrequency in 4F system,we can remove or weak the speckle in the image.And we have proved this method theoretically and eχperimentalIy.

关 键 词：激光散斑 概率密度函数 空间滤波 自相关函数 随机分布斑点 光学成像 消斑方法 

分 类 号：O433.54[机械工程—光学工程]