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.
出处
《计算机工程与科学》
CSCD
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)
关键词
椒盐噪声
原始直方图估计
收敛性
高噪声率
pepper-and-salt noise
original histogram estimation^convergence
high rate of noise
