Denoising Renders in Blender 2.81
Blender 2.8 makes denoising your renders dead simple
But there are a few do's and don'ts you need to know. (Plus testing denoising photos, Eevee renders, and animations!) If you're not sure about the best way to denoise in Blender 2.8 with Intel's Open Image Denoise compositing node, this tutorial is for you.
Since Blender 2.81 isn't out yet by the time of making this video, I'm using the Alpha version which you can download at blender.org/experimental.
First, I am going to look at Blender's Denoising Node and use it on a very noisy image that I rendered out with only 50 samples. While the Denoising Node does a great job on it's own, there are a few things you can do to get an even better result. For one, you can plug more information into the denoiser to help it process your image more effectively. Whether you use the denoising info's normal and albedo passes or the diffuse color and regular normal passes is up to you since it depends on the scene.
Normal and Diffuse Color passes vs. Denoising Normal and Denoising Albedo
03:49 - We can get even better by using the denoising information with the normal and albedo.
06:03 - I took a photo that came out very noisy and not really usable. Let's zoom into the noise, plug in the Denoise Node and see how we can clear this up...if at all.
07:05 - What about other renders, like Eevee? Yes, Eevee can get noisy, too. This can be improved by turning the sample count very high, but we'll try denoising it instead.
Does it only work with Intel?
08:45 - The node was implemented by Intel, so does it only run on Intel systems? Unlike Nvidia Denoising (which we'll look at as well), this is not the case.
09:13 - With complex animations, you can get pretty noisy areas and jitter, which doesn't go away even when adding samples.
Denoising motion blur, depth of field, fireflies, and hair
10:22 - Intel's denoiser work in every situation I can think of!
Denoising node vs. Cycles denoising
10:48 - The new denoiser not only works better, but it's also significantly faster.
Intel Denoising vs. nVidia OptiX denoising with D-Noise
I also have a section about nVidia RTX and realtime ray tracing in this blog post 👉 http://bit.ly/2LjIJRv