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
} }
Citation