DB2_周期_相移(对bmp文件进行小波变换，运行后点OPENBMP按钮找到BMP图片并打开然后点WAEVLETS看图片经过小波变换后的效果-_ DB2_ cycle phase shift (of the wavelet transform bmp files, after the point of running to find BMP picture OPENBMP button and open the picture and then points WAEVLETS look afte