OpenCV - 在背景減法器中修復前景MOG

Question

如何在opencv-python中使用mog背景減法器修復前景？我想有一個更穩定的前景，可以保持顯示的前景，一旦能夠正確減去前景和背景（例如固定前景約5秒） 這裏是我的代碼：

cap = cv2.VideoCapture(0) 
history = 500 # or whatever you want it to be 
accelerate = 5 

fgbg = cv2.createBackgroundSubtractorMOG2(history=500, varThreshold=20, detectShadows=True) 

count=0 
while(1): 
    for i in (1, accelerate): 
     ret, frame = cap.read() 
    fgmask = fgbg.apply(frame, learningRate=1.0/history) 
    imageproc(fgmask,count) 

# time.sleep(5) 
    k = cv2.waitKey(0) & 0xff 
    if k == 27: 
     break 
cap.release() 
cv2.destroyAllWindows() 

Answer 1

import numpy as np 
import cv2 
import time 

cap = cv2.VideoCapture('video.avi') 

fgbg = cv2.createBackgroundSubtractorMOG() 
while(1): 
    ret, frame = cap.read() 

    fgmask = fgbg.apply(frame) 

    cv2.imshow('frame',fgmask) 
    time.sleep(5) 
    k = cv2.waitKey(30) & 0xff 
    if k == 27: 
     break 

cap.release() 
cv2.destroyAllWindows()