Project1_face_detection.py

import cv2

cascade = cv2.CascadeClassifier('haarcascade_frontalface_alt2.xml')

cap = cv2.VideoCapture(0)

while True:
	_, frame = cap.read()

	gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

	faces = cascade.detectMultiScale(gray, 1.1, 3)

	#print(faces)

	for x,y,w,h in faces:
		cv2.rectangle(frame, (x,y), (x+w, y+h), (0,0,255), 2)

	cv2.imshow('window', frame)


	if cv2.waitKey(1) == 27:
		cv2.destroyAllWindows()
		break