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主要是两种提取方式

import cv2import matplotlib.pyplot as pltimport numpy as npbacksub = cv2.createBackgroundSubtractorKNN()# backsub = cv2.createBackgroundSubtractorMOG2()capture = cv2.VideoCapture('dance.mp4')while True:    ret, frame = capture.read()    if frame is None:        break    fgmask = backsub.apply(frame)    # cv2.rectangle(frame,(10,2),(100,20),(255,255,255),-1)    # cv2.putText(frame,str(capture.get(cv2.CAP_PROP_FRAME_WIDTH)),(15,15),cv2.FONT_HERSHEY_SIMPLEX,0.5,(0,0,0))    newimage = cv2.bitwise_and(frame,frame,mask=fgmask)    total_image = np.hstack((frame,newimage))    cv2.imshow('image',total_image)    keyboard = cv2.waitKey(30)    if keyboard == 'q' or keyboard == 27:        break

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