magic.py

 
    
    
    
    
pip install opencv-python

import numpy as np
import cv2
import time
import os
# to set display enviroment variable
os.environ['DISPLAY'] = ':0'

cap = cv2.VideoCapture(0)

time.sleep(3)

background = 0

#capture the background
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])
    upper_red = np.array([180,255,255])
    
    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=1)
    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('Magic', final_output)
    k = cv2.waitKey(10)
    if k==27:
        break

cap.release()
cv2.destroyAllWindows()