椒盐噪声下图像直方图的行为  

Behavior of Image Histogram Under Pepper-and-Salt Noise

作　　者：蔡利栋[1] 

机构地区：[1]暨南大学计算机科学系,广东广州510632

出　　处：《计算机工程与科学》2008年第11期25-27,45,共4页Computer Engineering & Science

基　　金：国家自然科学基金资助项目(60275028)

摘　　要：重获噪声图像的原始直方图有助于确定像素的原始灰度值。本文讨论了脉冲噪声下图像直方图的行为,给出了由噪声图像直方图直接或近似估计原始图像直方图的公式,表明了公式的收敛性,并作了仿真验证。结果成功地应用于高椒盐噪声图像的恢复问题。It is helpful to retrieve the original histogram of an image for its recovery from pulse noise. In this paper,the behavior of image histogram under pulse noise is described, a direct or approximate estimation of the original image histogram from its noisy versions is formulated, the convergence issue is presented and then verified with a simulation, resulting to a successful restoration of images with a high rate of pepper-and-salt noise.

关 键 词：椒盐噪声 原始直方图估计 收敛性 高噪声率 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]