Accelerating path tracing by eye path reprojection

[Lord Crc]

Interesting paper here, could this be easily added?

http://www.rendering.ovgu.de/rendering_ ... roject.pdf

Note on the end they talk about using the method with bidir. Do we already do this? I can't recall. I know you do it for some vertexes, but all?

[jeanphi]

Hi,

I had tried to implement something similar in Lux a while ago (in 2008, in was the path2 integrator), however I had issues weighting standard paths and so called reconstructed paths, so the results were not accurate.
Worth investigating some more I guess...

Jeanphi

[Lord Crc]

Well, I was thinking that since you now have gotten the weighting sorted bidir (at least, not far from it), perhaps the necessary infrastructure and knowledge was there to make this somewhat easy to implement. For some value of easy

[jeanphi]

Hi,

Actually it's not that easy because with the current infrastructure you would have to compute the probability of a path landing at a given point, which is unfeasible in any practical amount of time so you have to take another route: estimate the reconstructed picture and mix it with the standard render using a posteriori weighting.

Jeanphi