Temporal Denoising Analysis

This video is an analysis of techniques to reduce video noise (specifically temporal noise) in Blender.
I have created a Blender Compositor node-based temporal denoiser, which can be downloaded for free from my Gumroad.
https://markstead.gumroad.com/l/Tempo...

The video shows how to use the node-based temporal denoiser, and the strategies used to reduce noise and overcome problems.
Finally I do a comparison of the NVidia OptiX based temporal denoiser with my node-based temporal denoiser.
When you render your animation with the required render passes you can evaluate both denoisers and work out what works best for you.

This video covers:
00:00 - Introduction - Why temporal noise is a problem
02:10 - Frame blending
03:09 - Motion compensation - Using the compositor node group
06:01 - How ghosting is prevented
07:29 - Shadow handling experiments
08:45 - Temporal Denoising Comparison - OptiX vs Node Group
09:31 - Summary

This video uses the following Blender demo scenes:
- Agent 327: Operation Barbershop, by Blender Studio
- Spring, by Blender Studio
- The Junk Shop, by Alex Treviño
- Monster Under The Bed, by Metin Seven
All which can be downloaded on the Blender website https://www.blender.org/download/demo...

Warning: Changing the Camera focal length (zoom) is not correctly accounted for in the generation of motion vectors.  The code dates from 2015 and has not been updated.
https://projects.blender.org/blender/...
For now switch to just using spatial denoising for any parts of the animation where the focal length changes.

• #film_animation
• #blender
• #temporal
• #spatial
• #denoising
• #node_group
• #compositor
• #compositing
• #optix