import cv2
import numpy as np
facedetect=cv2.CascadeClassifier('haarcascade_frontalface_default.xml');
cam=cv2.VideoCapture(1);
while(True):
retval,img=cam.read();
gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
faces=facedetect.detectMultiScale(gray,1.3,5);
for(x,y,w,h)in faces:
cv2.rectangle(img,(x,y),(x+w,y+h),(0,0,255),2)
cv2.imshow("Face",img);
if(cv2.waitKey(1)==ord('q')):
break;
cam.release()
cv2.destroyAllWindows()
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