灰度图像边缘检测 ................\colortograyimg.m ................\Edgedetection.m ................\Edgedetection2.m ................\LENNA_128.BMP ................\maincl.jpg ................\Maincolors.m ................\PAN2005.bmp ................\PAN2678.bmp ................\PAN3057.jpg ................\photo022.bmp ................\PHOTO043.JPG