Title: Real-time dynamic radiosity relighting of virtual environments
Authors: Nielsen, Kasper Høy
Christensen, Niels Jørgen
Citation: Journal of WSCG. 2002, vol. 10, no. 1-2, p. 325-332.
Issue Date: 2002
Publisher: UNION Agency
Document type: článek
URI: http://wscg.zcu.cz/wscg2002/Papers_2002/E91.pdf.zip
ISSN: 1213-6972 (print)
1213-6980 (CD-ROM)
1213-6964 (online)
Keywords: radiozita;dynamické osvětlení;virtuální prostředí
Keywords in different language: radiosity;dynamic lighting;virtual environments
Abstract: This paper describes a method for dynamic changing of colours and intensities of light sources in a radiosity-lit environment. We introduce a fast radiosity sampling approach where energy is sorted with respect to the emitting lights. The idea is to tag energy with a light source identifier in order to determine from which light source energy is coming from, either directly or indirectly. Based on this information the subsequent reconstruction allows for interactive changing of light source emissions, as long as the geometry in the environment remains static. We illustrate this concept by developing a modified progressive refinement algorithm that performs efficient concurrent sampling of separate light source solutions. We show that the result is useful for real-time animation of realistic lighting in virtual environments. Furthermore, we describe how the method can be adapted to handle near real-time animation of moving lights.
Rights: © UNION Agency
Appears in Collections:Volume 10, number 1-2 (2002)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/5996

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