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Arnold Denoiser Imager / noice

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meU6KLN
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Arnold Denoiser Imager / noice

Hey, 

 

I still try to properly understand how to use the denoising feature in Arnold. For lookdev I use the Oidn a lot and it gives great and fast results. I also used it for sequences with the batch render, even though its not really made for animations. But it is easy to use: just add the denoiser, select the layers I want to have denoised and thats it. 

 

I have troubles understanding noice: I followed Lee Griggs video on Youtube (https://www.youtube.com/watch?v=eV7N_ymSjwM) and made a test sequence to test the noice utility with rendered .exr sequences. 

 

- Why is there a noice imager in the Arnold RenderView? I thought noice is a tool that is used afterwards. What does it do? Do i need to turn it on when I want to properly denoise afterwards or does it denoise every render right after its done when rendering a batch sequence

 

- A question a lot of people have: How do we use noice when we want to denoise specific passes? I also followed Rezas video on how to use noice (https://www.youtube.com/watch?v=YSAcFE_x-Ds&t=749s), have the "Output Denoising AOVs on. When I load my rendered .exr in noice, I still get only RGBA. 

 

It would be awesome if someone could explain, maybe even doing a proper workflow tutorial so everyone can catch up and understands on how to use noice with seperate AOVs. I know that it is possible somehow. 

 

Arnold can be super slow and people complain a lot about high render times, even thinking about switching render engines. I think using noice can be a real gamechanger if used properly. 

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lee_griggs
als Antwort auf: meU6KLN

Hi meU6KLN, Noice in the Arnold RenderView window is purely for denoising still images (see top here): https://docs.arnoldrenderer.com/display/A5AFMUG/Arnold+Denoiser

 

> have the "Output Denoising AOVs on. When I load my rendered .exr in noice, I still get only RGBA. 

Do you have 'merge AOVs' enabled in the common tab for EXR?

Information about Output Denoising AOVs can be found here:

https://docs.arnoldrenderer.com/display/A5AFMUG/AOVs#AOVs-OutputDenoisingAOVs

The workflow is here:

https://docs.arnoldrenderer.com/display/A5AFMUG/Arnold+Denoiser

 

Lee Griggs
Arnold rendering specialist
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meU6KLN
als Antwort auf: meU6KLN

Ah, I see!

 

"The Arnold Denoiser requires that the parameter "Output Variance AOVs" is enabled in the Render Settings AOVs tab (Output Denoising AOVs)."

 

I had trouble with creating the Output Driver for each AOV layer and didn't knew that I have to tell Arnold Denoiser (noice) to denoise RGBA / coat / diffuse / specular / sss / transmission - layers in the Light Group AOV input. 

 

This link was very good to understand what and how to do: https://support.superrendersfarm.com/hc/en-us/articles/360062299040-maya-arnold-denoiser !

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