import numpy as np
import cv2

cap = cv2.VideoCapture(0)
while (True):
	#Capture frame - by - frame
	ret, frame = cap.read()
	# Our operations on the frame come here
	gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
	# Display the resulting frame
	cv2.imshow('frame', gray)
	if cv2.waitKey(1) & 0xFF == ord('q'):
		break
# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()