Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/12915
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
DOI: https://doi.org/10.1111/j.1467-8659.2010.01818.x
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.
URI: http://ktisis.cut.ac.cy/handle/10488/12915
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)

47
Last Week
1
Last month
1
checked on Apr 6, 2020

Download(s)

5
checked on Apr 6, 2020

Google ScholarTM

Check


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