Contours for cv2 dont working

[Sasa578639]

contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)

        for cnt in contours:

            shape = get_shape(cnt)

            # Draw on frame
            draw_color = COLOR_MAP.get(name, (0, 255, 0))
            M = cv2.moments(cnt)
            if M["m00"] > 0:
                cx = int(M["m10"] / M["m00"])
                cy = int(M["m01"] / M["m00"])
                cv2.drawContours(frame, [cnt], -1, draw_color, 2)
                cv2.circle(frame, (cx, cy), 5, draw_color, -1)
                cv2.putText(frame, f"{name} {shape}", (cx - 40, cy - 20),
                            cv2.FONT_HERSHEY_SIMPLEX, 0.5, draw_color, 2)

sys.stdout.write('\r' + ' ' * 80 + '\r')
sys.stdout.flush()

debug_pub.publish(bridge.cv2_to_imgmsg(frame, 'bgr8'))

def main():
rospy.init_node(NODE_NAME)

global detection_pub, debug_pub
detection_pub = rospy.Publisher(RESULT_TOPIC, String, queue_size=1)
debug_pub = rospy.Publisher(DEBUG_TOPIC, Image, queue_size=1)

# Subscribe with large buffer for performance
rospy.Subscriber(CAMERA_TOPIC, Image, image_callback, queue_size=1, buff_size=2**24)

rospy.loginfo(f"{NODE_NAME} started. Listening on {CAMERA_TOPIC}")
rospy.spin()

if name == 'main':
main()

[okalachev]

What do you mean by not working?