实现了Mean Shift:A Robust Approach Toward Feature Space Analysis一书中的所介绍的平滑方法。-A program of literature of Mean Shift: A Robust Approach Toward Feature Space Analysis introduces smoothing method.

三种小波阈值降噪方法，很实用，算法简单，实用-[row col]=size(X) pn=0.0 pd=0.0 pb=0.0 pw=0.0