POV-Ray : Newsgroups : povray.binaries.images : Motecarlo path tracing with MegaPov 1.2.1 : Re: Motecarlo path tracing with MegaPov 1.2.1 Server Time
2 Aug 2024 14:13:13 EDT (-0400)
  Re: Motecarlo path tracing with MegaPov 1.2.1  
From: nemesis
Date: 7 Feb 2008 09:40:00
Message: <web.47ab17efdcec6a9fa9518f020@news.povray.org>
"H. Karsten" <h-karsten()web.de> wrote:
> "nemesis" <nam### [at] gmailcom> wrote:
> > how about processing it for 1 hour and removing the noise in Photoshop/Gimp? ;)
>
> The process is similar to a normal Photo process: You let light throe the
> objective and the photons rain down onto your image plane. The longer the
> objective is open the more photons you have - the finer the detail.
>
> By having less detail no filter (what ever it is) will give it to you.

hmm, true.  But suppose the detail is almost good enough, but there's still
noise which won't truly go away if not for another 20 hours on a quadcore.
Wouldn't it be nice to simply replace those extra render hours in favor of 2
seconds on a bitmap noise reducer?

Seems it was exactly what Enrico Cerica, a famous Blender artist, did for this
impressive render with Indigo:
http://enricocerica.cgsociety.org/gallery/578040/
http://features-temp.cgsociety.org/gallerycrits/208213/208213_1199047047_large.jpg

11 hours on a core 2 duo plus 2D noise reduction...

his also famous for his impressive yafray renders:
http://yafray.org/sec/8/common/show_img.php?file=177_EnricoCerica.jpg
http://yafray.org/sec/8/common/show_img.php?file=159_Enrico_Cerica.jpg
http://yafray.org/sec/8/common/show_img.php?file=161_Enrico_Cerica.jpg
http://yafray.org/sec/8/common/show_img.php?file=168_EnricoCerica.jpg
http://yafray.org/sec/8/common/show_img.php?file=144_EnricoCerica.jpg

> Maybe, this is a way to come closer to
> photographic results: The first dots have to be bigger and getting smaller in
> time. (just an idea..)

yay!  kinda like radiosity pretrace steps with smaller and smaller mosaic
previews? :)


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