(OpenCV by Python)3. 동영상 다루기

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참고 : https://docs.opencv.org/master/db/deb/tutorial_display_image.html

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실시간 동영상 처리하기

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코드

#-Python-OpenCV/Program/video/video_prac

import numpy as np  # cv2 설치하면 numpy는 같이 설치됨
import cv2 as cv

def video_capture(path):
    cap = cv.VideoCapture(0)
	if not cap.isOpened():
    	print("Cannot open camera")
    	exit()
    	
	while True:
    	# Capture frame-by-frame
    	ret, frame = cap.read()
    	
		# if frame is read correctly ret is True
   		if not ret:
        	print("Can't receive frame (stream end?). Exiting ...")
        	break
    
    	# Our operations on the frame come here
    	gray = cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
    
    	# Display the resulting frame
    	cv.imshow('frame', gray)
    	if cv.waitKey(1) == ord('q'):
        	break
        
	# When everything done, release the capture
	cap.release()
	cv.destroyAllWindows()