Use the Arnold Denoiser imager when rendering a single frame.

Denoiser 

Arnold Denoiser

  • The Arnold Denoiser requires that the parameter "Output Denoising AOVs" is enabled before rendering in the render settings (Denoiser tab). 
  • The Arnold Denoiser parameters are only available when using Production rendering (not ActiveShade).


The workflow is as follows:

  1. Go to the Denoiser tab and enable Output Denoising AOVs under Arnold Denoiser. This will automatically generate the normal, depth and albedo AOVs required for the Arnold Denoiser. 
    You won't see these AOVs listed on the AOV tab, but they will be added to the rendered output. 
  2. Ensure that you are rendering out to EXR.
  3. Render the scene. Alongside your beauty file (id enabled), Arnold will save an EXR version of it, also containing the AOVs needed for denoising. They are named after the beauty filename, postfixed by "_Noice_Input".
  4. Go to the Denoiser tab.
  5. Choose a rendered _Noice_Input EXR image in the Input and a directory for the output (denoised) files.
  6. Choose whether you want to denoise a single frame or a sequence and then select 'Denoise'. This will start the denoising process based on the settings that you have chosen. The denoised images are saved in the output directory, now postfixed by "_denoised".

Output Denoising AOVs

Input

Output


Temporal Stability Frames

Variance

Pixel Search Radius

Pixel Patch Radius

Denoise