title: Difference between HomographyBasedEstimator and findHomography OpenCV
body: <p>I am trying to write a program that stitches images using SURF detector and I would like to know the difference between the two homography estimator. 
  I understand <code>findHomography</code> uses RANSAC, is <code>HomographyBasedEstimator</code> using RANSAC too?</p>
  
  <p>If it isn't, would someone point me to the paper <code>HomographyBasedEstimator</code> used?</p>
  
  <p>Thanks in advance</p>