Denoising Alpha channel into file output node

Support Compositing and Post Processing
1

Hi,

I am wanting to denoise a bunch of different passes & render layers in blender, and I have realised that I also need to denoise the alpha channel.

I have done this here with the composite node, set to use alpha with the appropriate denoiser nodes. Which works great.

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But my problem is I can’t use the composite node as I need to output this render layer into a separate location. So I made this node setup to do that.

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However, it still doesn’t denoise properly, would someone be able to point me in the right direction with this?

Is my node setup slightly off?

I have been fiddling with compositing for a few days now and there are some things that are taking ages to do.

Thanks for you help :slight_smile:

2

I have figured it out.
For anyone also interested this is the working node setup:

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The mistake I made was the “set alpha” node had to be set to “replace alpha” not “apply mask”.
Also, make sure to have the HDR box ticked for your image/rgb denoiser node, otherwise, the colours won’t be correct.