Finds edges in an image
img_out = Canny(img_in, threshold1, threshold2, apertureSize[, L2gradient])
Input image (single channel 8-bit) (Mat).
First threshold for the hysteresis procedure (double).
Second threshold for the hysteresis procedure (double).
Aperture size for the Sobel operator (double) (default 3).
Flag indicating to use the more accurate L2 norm for the image gradient magnitude (double) (default %f).
Output image (Mat).
Canny
finds edges in an image using the Canny algorithm.