Title

Adaptive Mesh Subdivision For Precomputed Radiance Transfer

Keywords

Adaptive subdivision; Precomputed Radiance Transfer; Spherical Harmonic Lighting

Abstract

In precomputed radiance transfer (PRT), the radiance transfer operator is precomputed on vertices of a mesh. During rendering the transfer operator is combined with illumination to produce global illumination effects at real-time frame rates. However, visible error can be introduced by interpolating the transferred radiance between vertices. We propose to adaptively subdivide meshes with PRT in order to avoid the interpolation error. The mesh density is increased where the transferred radiance can change rapidly and introduce high error. We exploit the fact that the illumination frequency in PRT is bounded and thus we are able to perform the subdivision during the preprocessing phase. This obviates the need for dynamic mesh subdivision at render-time. The adaptive subdivision is guided by an error measure based on the transfer operator. Copyright © 2004 by the Association for Computing Machinery, Inc.

Publication Date

12-1-2004

Publication Title

Spring Conference on Computer Graphics, SCCG 2004 - Conference Proceedings

Number of Pages

106-111

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

27144448025 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/27144448025

This document is currently not available here.

Share

COinS