Class

Filter

Synopsis

diff_filter returns the difference between two uncorrelated buffers for the corresponding pixel. This is useful for certain denoising algorithms that require two buffers without modifying the beauty AOVs. If FIS (filter importance sampling) is used the two buffers can be reconstructed exactly, otherwise there will be a small error given enough camera rays.

width

Width of the filter, should match the width of the filter used for RGBA and other light AOVs.

filter_weights

Filter kernel weights, should match the filter used for RGBA and other lights AOVS. If FIS is used, should be set to `box`
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