Class
Driver
Synopsis
Roll over image to view imager_denoiser_oidn enabled
The Oidn denoiser (based on Intel's Open Image Denoise technology) is available as a post-processing effect. It is integrated into Arnold for use with IPR as an imager (so that you get a very quickly denoised image as you're moving the camera and making other adjustments).
- Arnold will automatically force a box_filter on outputs with filters with known issues when either of the denoisers are used. This is because the Oidn denoiser does not perform well with filters that span across multiple pixels.
- Denoisers won't work as well after imagers have been applied to them. Therefore denoisers should be applied before any other post-processing imagers (top of imagers list).
- The Oidn denoiser only works on full frames rather than buckets.
input
Input points to the previous imager operation in the chain (so that you can stack them and apply multiple operations serially).enable
Enables the imager.layer_selection
Selects layers processed by this imager with a glob or operator expression. An imager can use a selection to determine what nodes will be selected to be processed by the imager at render time. The selection is an expression that can consist of multiple selections concatenated by: Each selection uses glob patterns and regular expressions and a node will be processed by the imager if the expression matches the node name. By default, glob matching is used unless the selection is in a regex quote, i.e. or (union)and (intersection)not (negation)and not (exclusion)() for nested scopingr'<my_regex>'. For example:specular or diffuse
not r'sss_(direct|indirect)'
r'color_(mask1|mask2)' or r'mask[34]'
output_suffix
When set, creates a new additional output with the input name plus the suffix in which the denoised result will be written into. For example, when denoising the "RGBA" AOV with the output_suffix set to "_denoised", the denoised result will be written into a new "RGBA_denoised" output. It only works with multi-layer drivers.albedo
Optional albedo feature AOV is used to improve denoising quality (denoise_albedo_noisy is the default). Setting to an empty string "" will disable the use of feature AOVs, which might give better results when denoising AOVs for which no albedo exists.
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denoise_albedo_noisy (default)
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Without denoise_albedo_noisy
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