title: Exact Meaning of the parameters given to initialize MSER in OpenCV 2.4.x?
body: <p>OpenCV reference manual (2.4.x) states that the constructor that initializes MSER requires the following parameters: </p>
  
  <p>delta, min_area, max_area, max_variation, min_diversity, max_evolution, area_threshold,
  min_margin, edge_blur_size.</p>
  
  <p><strong>I am dealing with grayscale images. What is the use of the parameters "delta", "max_variation" and "min_diversity"? What property of an MSER do these parameters help control?</strong></p>
  
  <p>I have tried a lot to find the exact answer to this and I could only find a little information on the following pages (none of which was particularly useful in telling me what exactly do these 3 parameters control):
  1. <a href="http://code.opencv.org/projects/opencv/wiki/MSER" rel="noreferrer">OpenCV wiki</a>
  2. <a href="http://en.wikipedia.org/wiki/Maximally_stable_extremal_regions" rel="noreferrer">Wikipedia description of MSER</a>
  3. <a href="https://stackoverflow.com/questions/tagged/mser">MSER questions on STackOverflow</a></p>
  
  <p>Please help!</p>