Charles C wrote:
> sooperFoX wrote:
>
> > Now I will try your scene again Severi with just Path Tracing (no MLT). I
> > already tried it using BiPT overnight (8 hours) and still there was a noisy
> > black area in the middle of the green glass boxes that was taking a long time
> > to go away (where they overlap the most).
>
>
> Naive question here, but do any of the existing unbiased renderers out
> there have any method that either a) kicks in at a certain point to try
> to detect noise and send a disproportionate number of rays into noisier
> parts of the image, or b) takes optional user input (even mid-render)
> and doing likewise?
> Charles

Yes, MLT (Metropolis Light Transport) spends most of its time doing the
"difficult" areas and is best for interior scenes that are lit mostly by
indirect light. You can set up a room that has only a very tiny crack in the
wall and the light on the other side of the wall, and it will find its way
through. MLT works on top of path tracing or bi-directional path tracing.

It does not take user input at any time, though.

As far as I know, Kerkythea is not the only renderer to support MLT. There is a
Java renderer called SunFlow which does the same, and there may be others.

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