Christopher James Huff wrote:

> Here's the single-path, random choices per-path method, with 64 samples
> and taking 4m 5.03s to render:

Hi Christopher

The picture looks ok, but I think it would be possible to reduce the noise,
that is the variance of the sampling. 64 samples should be enough for a
clear picture. 

I have found following thesis with deals with monte carlo integration and
how to keep the variance low:

        http://graphics.stanford.edu/papers/veach_thesis/

It also introduces the "integral over all possible lightpaths" principle
wich I think is a really nice and general abstraction. I have started to
implement the bidirectional path integration method outlined in chapter 10
in my own raytracer but had to stop it due to lack of time.

- Micha

-- 
POV-Ray Objects Collection: http://objects.povworld.org

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