Interactive System for Dynamic Scene Lighting using Captured Video Environment Maps
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Date
2005
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present an interactive system for fully dynamic scene lighting using captured high dynamic range (HDR) video environment maps. The key component of our system is an algorithm for efficient decomposition of HDR video environment map captured over hemisphere into a set of representative directional light sources, which can be used for the direct lighting computation with shadows using graphics hardware. The resulting lights exhibit good temporal coherence and their number can be adaptively changed to keep a constant framerate while good spatial distribution (stratification) properties are maintained. We can handle a large number of light sources with shadows using a novel technique which reduces the cost of BRDF-based shading and visibility computations. We demonstrate the use of our system in a mixed reality application in which real and synthetic objects are illuminated by consistent lighting at interactive framerates.
Description
@inproceedings{10.2312:EGWR/EGSR05/031-042,
booktitle = {Eurographics Symposium on Rendering (2005)},
editor = {Kavita Bala and Philip Dutre},
title = {{Interactive System for Dynamic Scene Lighting using Captured Video Environment Maps}},
author = {Havran, Vlastimil and Smyk, Miloslaw and Krawczyk, Grzegorz and Myszkowski, Karol and Seidel, Hans-Peter},
year = {2005},
publisher = {The Eurographics Association},
ISSN = {1727-3463},
ISBN = {3-905673-23-1},
DOI = {10.2312/EGWR/EGSR05/031-042}
}