[Bf-committers] Patch adding a node to remove banding from images

["Björn S."]

Hello all,

As my first work for Blender I have written a node that removes banding 
artifacts from the input image and so blows an 8-bit image up to higher 
depth in some way.
I would be pleased if you would take some minutes to look at the code.

http://projects.blender.org/tracker/index.php?func=detail&aid=33930&group_id=9&atid=127

-Björn