Denoiser Passes

Denoiser Passes are generated by the Spectral AI Denoiser while rendering the denoised image. These passes will only render correctly if Camera > Imager > Enable Denoising is enabled.

Denoiser Passes can be accessed from the Render Toolbar > Render PassesRender passes allow a rendered frame to be further broken down beyond the capabilities of Render Layers. Render Passes vary among render engines but typically they allow an image to be separated into its fundamental visual components such as diffuse, ambient, specular, etc.. button > Beauty and Post Proc tab.

The following Denoiser Passes are available:

Denoised DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. Direct - Contains the denoised result of the diffuse direct render pass.
Denoised Diffuse Indirect - Contains the denoised result of the diffuse indirect render pass.
Denoised Reflection Direct - Contains the denoised result of the reflection direct render pass.
Denoised Reflection Indirect - Contains the denoised result of the reflection indirect render pass.
Denoised Emission - Contains the denoised result of the emission render pass.
Denoised Remainder - Contains the denoised result of the transmission and subsurface render passes.
Denoised Volume - Contains the denoised result of the volume render pass.
Denoised Volume Emission - Contains the denoised result of volume emission render pass.

Compositing

The following formula can be used to reconstruct the Denoised Beauty Pass:

Render Result = Denoised Diffuse Direct + Denoised Diffuse Indirect + Denoised Reflection Direct + Denoised Reflection Indirect + Denoised Emission + Denoised Remainder

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