open-cv invisible clock.py

import cv2
import numpy as np
import time

cap = cv2.VideoCapture(0)
time.sleep(2)
background = 0 


for i in range(30):
  ret, background = cap.read()

while (cap.isOpened()):  
  ret, img = cap.read()

  if not ret:
        break

  hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)
  lower_red = np.array([0, 120, 70])
  upper_red = np.array([10, 255, 255])
  mask1 = cv2.inRange(hsv, lower_red, upper_red)

  lower_red = np.array([170, 120, 70])  # HSV values
  upper_red = np.array([180, 255, 255])  # HSV values
  mask2 = cv2.inRange(hsv, lower_red, upper_red)

  mask1 = mask1 + mask2

  mask1 = cv2.morphologyEx(mask1, cv2.MORPH_OPEN, np.ones((3, 3), np.uint8), iterations=2)

  mask1 = cv2.morphologyEx(mask1, cv2.MORPH_DILATE, np.ones((3, 3), np.uint8), iterations=2)

  mask2 = cv2.bitwise_not(mask1) 

  res1 = cv2.bitwise_and(background, background, mask=mask1)  

  res2 = cv2.bitwise_and(img, img, mask=mask2)
  
  final_output = cv2.addWeighted(res1, 1, res2, 1, 0)
  cv2.imshow("Eurekaa  !!!", final_output)
  k = cv2.waitKey(10)
  if k == 27:
    break

cap.release()
cv2.destroyAllWindows()