Pixelate and divide into parts image with c#

I want to pixelate image and divide image into parts that pixelated then I would like to take the 开发者_JS百科approximate color of that divided part.

Imagine that fans are holding cartons and whole image is giving a shape and color of something ?

as in googled image : http://www.fenerbahcemaclari.com/images/tribun_resim.jpg

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Scale the image down to the number of pixels needed, then you can enlarge again. You can use the standard functionality of System.Drawing.Bitmap.

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Pixelate image: http://ericwillis.com/notes/2009/11/pixelate-an-image-with-csharp/