title: How to get matrix elements from Image in C#.net?
body: <p>I am new to Image Processing. I need to apply the Mean Filter for an image,
  so that needs to get the matrix elements in one pixel from an image.</p>
  
  <p>I am getting a pixel value as 2*2 Matrix (ARGB) like <code>(255,103,103,103)</code>.
  I don't know how to convert the color values <code>(255,103,103,103)</code> to an Integer like <code>25678</code>
  so that I can find the mean value.</p>
  
  <p>Please help me out with the problem.</p>