Path Tracing vs. Ray Tracing (2016)

Re:Path Tracing vs. Ray Tracing (2016) by GolDDranks on Wednesday December 19, 2018 @04:40AM (#18714452)

I wonder what convolutional neural networks bring to the table. Maybe you could use them to get rid of the noise, or then you could use ray tracing for the base image and train a CNN to "recolour" that image based on a noisy path traced one of the same scene.

This demo is 4 years old, but the noise still seems to be a problem: https://youtu.be/BpT6MkCeP7Y

If anybody's got more recent impressive demos to link, I'd like to see how things have been developing.

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Re:Path Tracing vs. Ray Tracing (2016) by blooop on Wednesday December 19, 2018 @10:00AM (#18715993)

This uses a neural network

https://www.youtube.com/watch?v=YjjTPV2pXY0

video results start around 1:15

This one does not use a neural network:

https://www.youtube.com/watch?v=HSmm_vEVs10

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Re:Path Tracing vs. Ray Tracing (2016) by aidenn0 on Wednesday December 19, 2018 @04:09PM (#18719648)

Those both only use global motion, which is the simplest case for temporal filtering; it would be interesting to see the effects with local motion (e.g. a blinking light).

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Re:Path Tracing vs. Ray Tracing (2016) by pcwalton on Wednesday December 19, 2018 @10:54AM (#18716463)

> Maybe you could use them to get rid of the noise

That's what they do. See: http://drz.disneyresearch.com/~jnovak/publications/KPCN/inde...

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Re:Path Tracing vs. Ray Tracing (2016) by bestest on Wednesday December 19, 2018 @04:45AM (#18714476)

This one is 3 years old, showcasing Brigade https://vimeo.com/124065358.

It looks like this is part of Octane Render.

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