一种基于椒盐噪声图像的加权滤波算法研究

针对中值滤波和其改进算法虽然能够在很大程度上改善噪声带来的影响，但是使图像边缘变得模糊这一问题，提出一种滤除椒盐噪声的加权滤波新算法。该算法定义中值相似度和空间临近度函数，并采用双阈值，根据阈值的范围，采用不同的方法获取权值。使用该算法对图像进行加权滤波不仅能够有效地去除椒盐噪声，而且尽可能的保存完整的图像边缘信息。

Study on a Weighted Filtering Algorithm Based on the Images with Salt and Pepper Noise

Although median filtering and the algorithm improved can improve the influence that the noise come to a large extent, make the picture edge become misty. Aim to this problem, In this paper,a new weighted filtering algorithm used to the images with salt and pepper noise was proposed. This algorithm defined the median similarity and space close by degree functions, and adopt double threshold. It adopt a different method to obtain weights according to the scope of the double threshold. This algorithm can that not only filter the salt and pepper noise availably, but also keep an integrity possibly to the picture edge.