POV-Ray : Newsgroups : povray.general : PovRay and reality : Re: PovRay and reality Server Time
10 Aug 2024 23:22:50 EDT (-0400)
  Re: PovRay and reality  
From: Larry Fontaine
Date: 20 Oct 1999 12:42:42
Message: <380DF12B.C1F69060@isd.net>
Hmm, are you sure the top ones aren't the photographs? (j/k)

Gilles Tran wrote:

> An interesting and educational challenge, because it may show how large is
> the gap between photographic reality and what we call "photorealism" in
> 3D... I've sometimes used photographs as guidelines and always found the gap
> pretty wide (unless the real life model is itself very artificial, but then
> what's the point : you may as well take a picture of a blank sheet of paper,
> overexpose it and then run pov with only a white background - I guarantee a
> 100% match). AFAIK, the lighting model in povray is quite simple (Pixar's
> Larry Gritz called it "simplistic" once) and one can achieve more or less
> realistic effects only by trickery, as you mention. And even then...
> Just for the fun, here is an example of what the big boys can do with
> specialized software (Lightscape in this case, which does architectural
> rendering where photorealism is necessary), and yet the author admits having
> done some post-processing in Photoshop.
> http://www.lightscape.com/Contest98/body_lealcomparison.asp
> http://www.lightscape.com/Contest98/body_lealcomparison2.asp
>
> G.
>
> Fabian Brau wrote:
>
> > Hello,
> >
> > Someone has already test how Povray can reproduce reality. This means
> > you take a simple scene (simple object), with simple light and you take
> > a photo and you compare to what povray calculate. Has povray is not
> > devoted to do this you can in a second step use some tricks (additional
> > light with no_shadow etc..). The difficulty is to repoduce exactly the
> > real scene into povray and find the good texture. Someone has attempt to
> > do this?
> >
> > Fabian.


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