本程序实现边缘检测，并可通过设置阀值t二值化输出图像，选择类型设置检测算子（Roberts , sobel , sobel_diagonal ,sobel算子, Prewit ,canny ， LoG ）。-Edge detection of the program, and by setting the threshold t of the output binary image, select the type of operator settings (Roberts' , ' sobel' , ' sobel_diagonal' , sobel operator, ' Prewit' , canny ' ,'　LoG ' ).