具有细节保护特性的多级中值滤波算法

A Multilevel Median Filtering Algorithm with Preserving Details Characteristics

提出了一种改进的中值滤波算法。该算法对中值滤波进行了两方面的改进,一方面基于区域的统计信息,对噪声点进行分析;另一方面对多级中值滤波的方向进行自适应处理。与中值滤波相比,它具有更好的平滑噪声和边缘保持功能,而且能有效地滤除图像中的随机噪声。

An improved median filtering algorithm is presented in this paper. On the one hand, the methodanalyzes the noise based on local statistical information and on the other hand, the method conducts the selfadaptive processing of multilevel median filtering direction. Comparing with the median filtering, the proposed method has better performance for preserving details and smoothing random noise in images.