title: how to adjust the parameters of backgroundSubtractorMOG
body: <p>So I know there are a few parameters that I can set and I am not really sure about the <strong>nmixtures, backgroundRatio and noseSigma</strong></p>
  
  <pre><code>Python: cv2.createBackgroundSubtractorMOG([history[, nmixtures[, backgroundRatio[, noiseSigma]]]]) → retval
  Parameters: 
  history – Length of the history.
  nmixtures – Number of Gaussian mixtures.
  backgroundRatio – Background ratio.
  noiseSigma – Noise strength (standard deviation of the brightness or each color channel). 0 means some automatic value.
  </code></pre>
  
  <p>I looked to find a good explanation on how to properly adjust these parameters but I didn't find anything. Can someone suggest a proper way to adjust these based on data?</p>