Constant-Cost Spatio-Angular Prefiltering of Glinty Appearance Using Tensor Decomposition - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles ACM Transactions on Graphics Year : 2022

Constant-Cost Spatio-Angular Prefiltering of Glinty Appearance Using Tensor Decomposition

Abstract

The detailed glinty appearance from complex surface microstructures enhances the level of realism but is both - and time-consuming to render, especially when viewed from far away (large spatial coverage) and/or illuminated by area lights (large angular coverage). In this article, we formulate the glinty appearance rendering process as a spatio-angular range query problem of the Normal Distribution Functions (NDFs), and introduce an efficient spatio-angular prefiltering solution to it. We start by exhaustively precomputing all possible NDFs with differently sized positional coverages. Then we compress the precomputed data using tensor rank decomposition, which enables accurate and fast angular range queries. With our spatio-angular prefiltering scheme, we are able to solve both the storage and performance issues at the same time, leading to efficient rendering of glinty appearance with both constant storage and constant performance, regardless of the range of spatio-angular queries. Finally, we demonstrate that our method easily applies to practical rendering applications that were traditionally considered difficult. For example, efficient bidirectional reflection distribution function evaluation accurate NDF importance sampling, fast global illumination between glinty objects, high-frequency preserving rendering with environment lighting, and tile-based synthesis of glinty appearance.
Fichier principal
Vignette du fichier
paper.pdf (83.31 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03938085 , version 1 (13-01-2023)

Identifiers

Cite

Hong Deng, Yang Liu, Beibei Wang, Jian Yang, Lei Ma, et al.. Constant-Cost Spatio-Angular Prefiltering of Glinty Appearance Using Tensor Decomposition. ACM Transactions on Graphics, 2022, 41 (2), pp.1-17. ⟨10.1145/3507915⟩. ⟨hal-03938085⟩
77 View
10 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More