(img)
| 14 | return False |
| 15 | |
| 16 | def canny(img): |
| 17 | low_threshold = 50 |
| 18 | high_threshold = 100 |
| 19 | img = cv2.Canny(img, low_threshold, high_threshold) |
| 20 | img = img[:, :, None] |
| 21 | img = 255 - np.concatenate([img, img, img], axis=2) |
| 22 | return img |
| 23 | |
| 24 | |
| 25 | if __name__ == "__main__": |