POV-Ray : Newsgroups : povray.newusers : Getting good glows over high-intensity areas : Re: Getting good glows over high-intensity areas Server Time
29 Jul 2024 16:22:41 EDT (-0400)
  Re: Getting good glows over high-intensity areas  
From: Warp
Date: 19 Jul 2005 01:58:04
Message: <42dc966c@news.povray.org>
ZainAnak <nomail@nomail> wrote:
> Any ideas?

  What you are after is color-bleeding.

  In photography color-bleeding happens when the amount of light which
hits a spot in the film is too bright for the film. What happens is that
the brightness will "bleed" a bit to its surroundings, making the bright
spot to look like it was glowing.
  A somewhat similar effect in photography can be achieved by using a
filter in front of the lens which scatters the light a bit (this makes
everything glow a bit, not just ultrabright parts).

  In computer renderings these effects are most easily achieved as a
post-processing effect. The official version of POV-Ray does not currently
support any kind of post-processing of the image and thus this effect
is basically not possible. (In some special cases you can fake it, but
not in the general case.)

  At least the 0.x version of MegaPOV supported this kind of post-processing
(or at least close to it), but I don't remember if the latest 1.x version
does.

-- 

                                                          - Warp


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