This cv2.findContours function takes three input arguments. The first argument is an image that should be a grayscale image. The second is a ... ... <看更多>

... <看更多>

findContours () function, we have passed an argument, Contour Retrieval Mode. We usually passed cv2.RETR_LIST or cv2.RETR_TREE and it worked nice. But what does ... ... <看更多>

_, contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE) # fails with error "not enough values to unpack ... ... <看更多>

_, contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE) # fails with error "not enough values to unpack ... ... <看更多>