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2017-01-25 03:40:03 -0600

asked a question

Why is the null type expected error occurs if VideoCapture('vtest.avi') is replaced by VideoCapture(0) in BackgroundSubtractorMOG2 tutorial?

import numpy as np
import cv2

cap = cv2.VideoCapture(0)

fgbg = cv2.createBackgroundSubtractorMOG2()

while(1):
    ret, frame = cap.read()

    fgmask = fgbg.apply(frame)

    cv2.imshow('frame',fgmask)
    k = cv2.waitKey(30) & 0xff
    if k == 27:
        break

cap.release()
cv2.destroyAllWindows()