Denoising and Transparent Material Issue

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Denoising and Transparent Material Issue

Postby Draydin_r » Tue Jan 08, 2019 5:55 am

Draydin_r Tue Jan 08, 2019 5:55 am
Currently I seem to be running into an issue with the denoiser. It seems to have some rather lack luster performance on Glass and like materials. Is this a known issue?

See below for examples of a undenoised and denoised set of glass panes. Notice how blochy and odd the glass looks even with relatively similar noise.

MainRender_Glass.PNG


Denoiser_Glass.PNG
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Intel Core i7 CPU 6850K @ 3.60GHz 128.0 GB Ram / Win 10 64 bit / 1x GeForce GTX 1070 8 GB vRam (Foreground Desktop and Denoiser) + 1x GeForce RTX 2080 Ti (Background Renderer) / Currently Running Octane 3 & 4.01.1 Standalone/Lightwave/Max2017
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Re: Denoising and Transparent Material Issue

Postby bepeg4d » Tue Jan 08, 2019 4:53 pm

bepeg4d Tue Jan 08, 2019 4:53 pm
Hi,
try to increase the sampling until the blochy effect is gone.
ciao Beppe
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Re: Denoising and Transparent Material Issue

Postby Zay » Thu Jan 10, 2019 12:33 pm

Zay Thu Jan 10, 2019 12:33 pm
Yes, I see the same thing with transparent objects. Windows and the likes. This is real hard for the denoiser. I usually use area render on those difficult areas first.
Win 7 64bit | 3.4GHz I7 | 64GB ram | 2x GTX 1080Ti - driver 431.36| Modo/ZBrush/Poser
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Re: Denoising and Transparent Material Issue

Postby Draydin_r » Fri Jan 11, 2019 6:10 am

Draydin_r Fri Jan 11, 2019 6:10 am
@bepeg4d

I did in fact try that but it still remained, in fact it almost looked like the longer the samples went, the less the denoiser would work on the glass.

Do we know why the denoiser doesn't work well on these surfaces?
Intel Core i7 CPU 6850K @ 3.60GHz 128.0 GB Ram / Win 10 64 bit / 1x GeForce GTX 1070 8 GB vRam (Foreground Desktop and Denoiser) + 1x GeForce RTX 2080 Ti (Background Renderer) / Currently Running Octane 3 & 4.01.1 Standalone/Lightwave/Max2017
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