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EMGU Finding the most common value in a UMat

/ Published in: C#
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Given a UMat we sometimes need to find the most common value in that UMat. This code does it the unsafe (fast) way.

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  1. UMat umat = new UMat();
  2. byte mostCommonValue;
  3.  
  4. fixed (byte* buffer = umat.Bytes)
  5. {
  6.     byte* end = buffer + umat.Bytes.Length;
  7.  
  8.     int[] counters = new int[256];
  9.  
  10.     for (byte* pointer = buffer; pointer != end; pointer++)
  11.     {
  12.         counters[*pointer]++;
  13.     }
  14.  
  15.     mostCommonValue = (byte)Array.IndexOf(counters, counters.Max());
  16. }

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