Sorry Christoph, I guess I've been reading too many global illumination
papers, and they've been numbing my brain :) From my understanding so far,
importance sampling attempts to reduce the rays needed, and/or put the ones
cast to better use by not simply shooting rays/particles in a random manner,
but by attempting to adaptively "target" them to the areas that will make
the most difference.

Thanks,
George Pantazopoulos




"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3CC2F0EF.6DDAF486@gmx.de...
>
>
> George Pantazopoulos wrote:
> >
> > Hello,
> >     Does POVRay 3.5 use some kind of importance sampling or weighted
> > importance sampling when taking random samples to solve the diffuse
> > interreflection integral? I've been looking at the MegaPOV source but
its
> > not yet clear to me if this is the case or if it applies here.
>
> If you explain what 'importance sampling' is i'm quite sure i can answer
> your question.
>
> Christoph
>
> --
> POV-Ray tutorials, IsoWood include,
> TransSkin and more: http://www.tu-bs.de/~y0013390/
> Last updated 20 Apr. 2002 _____./\/^>_*_<^\/\.______

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