Time Dependent Photon Mapping

Cammarano, Mike; Jensen, Henrik Wann

Time Dependent Photon Mapping

Files

135-144.pdf (1.18 MB)

Date

2002

Authors

Cammarano, Mike
Jensen, Henrik Wann

Publisher

The Eurographics Association

Abstract

The photon map technique for global illumination does not specifically address animated scenes. In particular, prior work has not considered the problem of temporal sampling (motion blur) while using the photon map. In this paper we examine several approaches for simulating motion blur with the photon map. In particular we show that a distribution of photons in time combined with the standard photon map radiance estimate is incorrect, and we introduce a simple generalization that correctly handles photons distributed in both time and space. Our results demonstrate that this time dependent photon map extension allows fast and correct estimates of motion-blurred illumination including motion-blurred caustics.

        @inproceedings{:10.2312/EGWR/EGWR02/135-144
,
booktitle = {Eurographics Workshop on Rendering
},
editor = {P. Debevec and S. Gibson
},
title = {{Time Dependent Photon Mapping
}},
author = {Cammarano, Mike and 
Jensen, Henrik Wann
},
year = {2002
},
publisher = {The Eurographics Association
},
ISSN = {1727-3463
},
ISBN = {1-58113-534-3
},
DOI = {/10.2312/EGWR/EGWR02/135-144
}
}