采用邻域平均法的均值滤波器非常适用于去除通过扫描得到的图像中的颗粒噪声。领域平均法有力地抑制了噪声,同时也由于平均而引起了模糊现象,模糊程度与领域半径成正比。-Neighborhood average method is used to mean filter is very suitable for removing particulate noise in the image is obtained by scanning.Area average method effectively suppress the noise, but also caused the fuzzy phenomenon, due to the average fuzzy degree is proportional to the area radius.