关键词: 椒盐噪声 原始直方图估计 收敛性 高噪声率

Abstract:

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.

Key words: pepper-and-salt noise;original histogram estimation~convergence, high rate of noise