Automatic Feature Selection for Denoising Volumetric Renderings
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association and John Wiley & Sons Ltd.
Abstract
We propose a method for constructing feature sets that significantly improve the quality of neural denoisers for Monte Carlo renderings with volumetric content. Starting from a large set of hand-crafted features, we propose a feature selection process to identify significantly pruned near-optimal subsets. While a naive approach would require training and testing a separate denoiser for every possible feature combination, our selection process requires training of only a single probe denoiser for the selection task. Moreover, our approximate solution has an asymptotic complexity that is quadratic to the number of features compared to the exponential complexity of the naive approach, while also producing near-optimal solutions. We demonstrate the usefulness of our approach on various state-of-the-art denoising methods for volumetric content. We observe improvements in denoising quality when using our automatically selected feature sets over the hand-crafted sets proposed by the original methods.
Description
CCS Concepts: Computing methodologies --> Ray tracing; Feature selection; Neural networks
@article{10.1111:cgf.14587,
journal = {Computer Graphics Forum},
title = {{Automatic Feature Selection for Denoising Volumetric Renderings}},
author = {Zhang, Xianyao and Ott, Melvin and Manzi, Marco and Gross, Markus and Papas, Marios},
year = {2022},
publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
ISSN = {1467-8659},
DOI = {10.1111/cgf.14587}
}