说明：  open cv 邊緣化 用Canny作邊緣化處理 cvCanny, void cvCanny( const CvArr* image, CvArr* edges, double threshold1, double threshold2, int aperture_size=3 ) image 單通道輸入圖像. edges 單通道存儲邊緣的輸出圖像 threshold1 第一個閾值 threshold2 第二個閾值 aperture_size Sobel 運算元內核大小 (見 cvSobel).
(open cv for marginalized marginalized deal with the Canny cvCanny, void cvCanny (const CvArr* image, CvArr* edges, double threshold1, double threshold2, int aperture_size = 3) image single input image. edges stored in the edge of the output channel Image threshold1 first threshold threshold2 second operand threshold aperture_size Sobel kernel size (see cvSobel).)