Voxel-based Representations for Improved Filtered Appearance
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Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Volumetric representations allow filtering of mesh-based complex 3D scenes to control both the efficiency and quality of rendering. Unfortunately, directional variations in the visual appearance of a volume still hinder its adoption by the real-time rendering community. To alleviate this problem, we propose two simple structures: (1) a virtual mesh to encode the directional distribution of colors and normals, and (2) a low-resolution subgrid of opacities to encode directional visibility. We precompute these structures from a mesh-based scene into a regular voxelization. During display, we use simple rendering methods on the two structures to compute the image contribution of the appearance of a visible voxel, optimizing for efficiency and/or quality. The improved visual results compared to previous work are a step forward to the integration of volumetric representations in real-time rendering.
Description
CCS Concepts: Computing methodologies -> Visibility; Volumetric models; Antialiasing; Keywords: Volume rendering, voxel, octree, level of detail, SGGX
@inproceedings{10.2312:hpg.20231132,
booktitle = {High-Performance Graphics - Symposium Papers},
editor = {Bikker, Jacco and Gribble, Christiaan},
title = {{Voxel-based Representations for Improved Filtered Appearance}},
author = {Brito, Caio José Dos Santos and Poulin, Pierre and Teichrieb, Veronica},
year = {2023},
publisher = {The Eurographics Association},
ISSN = {2079-8687},
ISBN = {978-3-03868-229-5},
DOI = {10.2312/hpg.20231132}
}