Photon-driven Irradiance Cache
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Date
2008
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Publisher
The Eurographics Association and Blackwell Publishing Ltd
Abstract
We describe a global illumination method combining two well known techniques: photon mapping and irradiance caching. The photon mapping method has the advantage of being view independent but requires a costly additional rendering pass, called final gathering. As for irradiance caching, it is view-dependent, irradiance is only computed and cached on surfaces of the scene as viewed by a single camera. To compute records covering the entire scene, the irradiance caching method has to be run for many cameras, which takes a long time and is a tedious task since the user has to place the needed cameras manually. Our method exploits the advantages of these two methods and avoids any intervention of the user. It computes a refined, view-independent irradiance cache from a photon map. The global illumination solution is then rendered interactively using radiance cache splatting.
Description
@article{10.1111:j.1467-8659.2008.01346.x,
journal = {Computer Graphics Forum},
title = {{Photon-driven Irradiance Cache}},
author = {Brouillat, J. and Gautron, P. and Bouatouch, K.},
year = {2008},
publisher = {The Eurographics Association and Blackwell Publishing Ltd},
ISSN = {1467-8659},
DOI = {10.1111/j.1467-8659.2008.01346.x}
}