함수 /** @brief Finds edges in an image using the Canny algorithm @cite Canny86 .The function finds edges in the input image and marks them in the output map edges using theCanny algorithm. The smallest value between threshold1 and threshold2 is used for edge linking. Thelargest value is used to find initial segments of strong edges. See@param image 8-bit input image.@param edges output edge map; ..