def draw_line(img, x1, y1, x2, y2, color=(0, 255, 0), thickness=2):
    return cv2.line(img, (x1, y1), (x2, y2), color, thickness)
def draw_line(img, x1, y1, x2, y2, color=(0, 255, 0), thickness=2):
    return cv2.line(img, (x1, y1), (x2, y2), color, thickness)