中值滤波_百度百科 中值滤波法是一种非线性平滑技术，它将每一像素点的灰度值设置为该点某邻域窗口内的所有像素点灰度值的中值。 -Median filter _ Baidu 百科 median filtering method is a non-linear smoothing technique, which the gray value of each pixel is set to that point within the window of a neighbor pixel g