title: Smooth an existing "image" in C#
body: <p>How can I smooth a <code>Graphics</code> object in C# ? To be more precise, I need to run a smoothing at a very precise moment of my <code>Graphics</code> object generation, on the whole object. The image is coloured.</p>
  
  <p>I am flexible in terms of input classes (<code>Graphics</code>, etc..). I just suggested <code>Graphics</code> at it is a central class for image manipulations in C#.</p>
  
  <p><code>Graphics.SmoothingMode</code> is out of context for what I need to do and I imagine WU's algorithm only applies to drawing lines in greyscale.</p>