title: AttributeError: module 'cv2.cv2' has no attribute 'bgsegm
body: <pre><code>import numpy as np
  import cv2
  cap = cv2.VideoCapture('vtest.avi')
  fgbg = cv2.bgsegm.createBackgroundSubtractorMOG()
  while(1):
      ret, frame = cap.read()
      fgmask = fgbg.apply(frame)
      cv2.imshow('frame',fgmask)
      k = cv2.waitKey(30) &amp; 0xff
      if k == 27:
          break
  cap.release()
  cv2.destroyAllWindows()
  </code></pre>
  
  <p>I am getting the following error: AttributeError: module 'cv2.cv2' has no attribute 'bgsegm'.</p>
  
  <p>I am using Python 3.6 with OpenCV 3.6 on windows machine.
  I tried using the pip install opencv-contrib-python command but still the problem remains same on my windows machine. This command helped be on Ubuntu system, but not on windows. I searched similar problems on stack but couldn't solve this issue. Can someone help me out on this? Thanks!</p>