POV-Ray : Newsgroups : povray.unofficial.patches : convolution matrix : Re: convolution matrix Server Time
2 Sep 2024 10:19:00 EDT (-0400)
  Re: convolution matrix  
From: Chris Huff
Date: 26 Feb 2000 06:31:03
Message: <chrishuff_99-E6BAF9.06323026022000@news.povray.org>
In article <8EE67889Aseed7@204.213.191.228>, ing### [at] homenl (ingo) 
wrote:

> Here is an explaination of what it does:
> http://btp1da.phy.uni-bayreuth.de/FreeBSD/gimp/Plugin_generic.html#446972

Ah, I have used those before(GraphicConverter has them). This sounds 
more like a post_process feature than a texture feature, though...
But it seems odd to be limited to a float value for each pixel-why not 
use a color vector instead? And maybe make the size user defined instead 
of fixed.

The reason it would be a post_process feature and not a pigment warp is 
that it seems to require pixels, or at least color samples in a plane. 
That would be pretty difficult to accomplish without UV coordinates for 
every object, I think. Maybe if there were a way to define it for 
specific objects, so it was only applied in the area of the image 
covered by the object...the code shouldn't be too hard, but what would 
the syntax be?

-- 
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/


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