Please use this identifier to cite or link to this item:
Title: Fullsphere irradiance factorization for real‐time all‐frequency illumination for dynamic scenes
Authors: Michael-Grigoriou, Despina 
Chrysanthou, Yiorgos 
Keywords: Real-time illumination;Dynamic scenes;Soft-shadows;Factorization
Category: Computer and Information Sciences
Field: Natural Sciences
Issue Date: Dec-2010
Publisher: John Wiley & Sons, Inc.
Source: Computer graphics forum, 2010, Volume 29, Issue 8, Pages 2516-2529
Abstract: Computation of illumination with soft-shadows from all-frequency environment maps, is a computationally expen-sive process. Use of pre-computation add the limitation that receiver’s geometry must be known in advance, sinceIrradiance computation takes into account the receiver’s normal direction. We propose a method that using a newnotion that we introduce, the Fullsphere Irradiance, allows us to accumulate the contribution from all light sourcesin the scene, on a possible receiver without knowing the receiver’s geometry. This expensive computation is donein a pre-processing step. The pre-computed value is used at run time to compute the Irradiance arriving at anyreceiver with known direction. We show how using this technique we compute soft-shadows and self-shadows inreal-time from all-frequency environments, with only modest memory requirements. A GPU implementation of themethod, yields high frame rates even for complex scenes with dozens of dynamic occluders and receivers.
ISSN: 1467-8659
Rights: © 2010 The Authors Computer Graphics Forum © 2010 The Eurographics Association and Blackwell Publishing Ltd.
Type: Article
Appears in Collections:Άρθρα/Articles

Show full item record

Page view(s)

Last Week
Last month
checked on Apr 6, 2020


checked on Apr 6, 2020

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.