POV-Ray : Newsgroups : povray.pov4.discussion.general : Dithered output : Re: Dithered output Server Time
27 Feb 2024 18:42:39 EST (-0500)
  Re: Dithered output  
From: Warp
Date: 23 Oct 2008 14:56:33
Message: <4900c8e0@news.povray.org>
Dan Connelly <djc### [at] yahoocom> wrote:
> Warp wrote:
> >   This sounds like something you could write with a generic post-processing
> > script (which future versions of POV-Ray should and will most probably
> > support).
> > 

> I thought dithering had to know the exact value of a color so, for constant color,
it could cycle between discretized colors with a weighting depending on how close the
actual color is to each.  (for graded colors, it's slightly more complicated).  This
can't be done post-processing, by which point the precision has already been lost.

  The floating point values of each color component of each pixel will,
obviously, be available to the post-processing filter.

                                                          - Warp

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