yes，sir，may be use createBackgroundSubtractorMOG2，such as
import cv2 as cv
import numpy as np
vid = cv.VideoCapture("D:/Program Files/Polyspace/R2019a/toolbox/images/imdata/traffic.avi")
mog = cv.createBackgroundSubtractorMOG2()
se = cv.getStructuringElement(cv.MORPH_RECT, (3, 3))
while True:
ret, imi = vid.read()
if ret is True:
fm = mog.apply(imi)
ret, bw = cv.threshold(fm, 220, 255, cv.THRESH_BINARY)
bw = cv.morphologyEx(bw, cv.MORPH_OPEN, se)
bg = mog.getBackgroundImage()
cv.imshow("left_bg&right_frame",np.concatenate((bg, imi), axis=1))
c = cv.waitKey(50)
else:
break
cv.destroyAllWindows()
