adding a hint of noise can help add some variation.  there's only so
far that will go, though.

I had come across that "power retouche" plugin for Photoshop and had
wondered if there might be some things along those lines you could do
to an image in Nuke to bring it back from the dead, but nothing's
forced me down that road yet.  It might give you some ideas, though.

http://powerretouche.com/Histogram_Repair_plugin_tutorial.htm



On Mon, Apr 11, 2011 at 12:07 PM, Ned Wilson <[email protected]> wrote:
> Hey all,
>
> Have any of you found a quick and dirty way to remove posterization?
>
> I have some footage that was pretty heavily compressed ( and it would appear 
> up-rezzed from a SD source ).
>
> The JPEG damage is pretty nasty, but F_DeNoise does a pretty decent job of 
> taking that out. The issue is that when the image contains an obvious color 
> band, F_DeNoise regards it as a detail.
>
> I'm having some success doing an edge detect and using the result to mask a 
> blur, but there has to be a more clever way. 
> :)_______________________________________________
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> [email protected]
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>
>
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