bs.py

#!/usr/bin/env python
# -*- coding:utf-8 -*-

import cv2

cap = cv2.VideoCapture(0)
substractor = cv2.createBackgroundSubtractorMOG2()

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

    if not succeeded:
        continue

    fgmask = substractor.apply(frame)

    fg = cv2.bitwise_and(frame, frame, mask = fgmask)

    cv2.imshow('fg', fg)
    cv2.imshow('frame', frame)
    cv2.imshow('mask', fgmask)
    if cv2.waitKey(1) & 0xFF == ord(' '):
        break

cap.release()
cv2.destroyAllWindows()