While some RenderMan plugins integrate the Denoise feature, RenderMan does ship with a tool for processing images after rendering. Keep in mind that the appropriate AOVs must be included for the Denoise filter to work.
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Denoising does not affect the alpha channel of images. Doing so can cause artifacts and halos to form and is therefore avoided. |
GPU Acceleration
Denoise can attempt to use GPU acceleration. You can activate this mode by adding --override gpuIndex 0 to the command line, where the number indicates which GPU to use. In a single-GPU system, this will always be 0. If no compatible hardware is found it will failover to CPUs. Using the GPU requires CUDA 7.0 (compute capability 2.0 or later) and a capable graphics card with support.
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sigmaAlphaOnly.filter.json
Used to filter based on image alpha.
volume.filter.json
Used for volumes rendered alone onto transparent black.
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