常用滤波算法：程序判断法，中值滤波法，算术平均滤波法，加权平均滤波法，滑动平均滤波法，低通滤波法，中位值平均滤波-Common filtering algorithm: program to determine, median filtering, arithmetic mean filtering method, the weighted average filter, moving average filter, low-pass filtering, median average filt