Capturing and Rendering with Incident Light Fields
Jonas Unger and Andreas Wenger and Tim Hawkins and Andrew Gardner and Paul Debevec
Linköping University, Sweden
University of Southern California, Institute for Creative Technologies, United States
Eurographics Workshop on Rendering 2003
Abstract:
This paper presents a process for capturing spatially and
directionally varying illumination from a real-world scene and
using this lighting to illuminate computer-generated objects. We
use two devices for capturing such illumination. In the first we
photograph an array of mirrored spheres in high dynamic range to
capture the spatially varying illumination. In the second, we
obtain higher resolution data by capturing images with an high
dynamic range omnidirectional camera as it traverses across a
plane. For both methods we apply the light field technique to
extrapolate the incident illumination to a volume. We render
computer-generated objects as illuminated by this captured
illumination using a custom shader within an existing global
illumination rendering system. To demonstrate our technique we
capture several spatially-varying lighting environments with
spotlights, shadows, and dappled lighting and use them to
illuminate synthetic scenes. We also show comparisons to real
objects under the same illumination.
Documents:
Capturing and Rendering with Incident Light Fields
Bibtex:
@inproceedings{Unger:2003:CRI:882404.882425,
author = {Unger, J. and Wenger, A. and Hawkins, T. and Gardner, A. and Debevec, P.},
title = {Capturing and Rendering with Incident Light Fields},
booktitle = {Proceedings of the 14th Eurographics Workshop on Rendering},
series = {EGRW '03},
year = {2003},
isbn = {3-905673-03-7},
location = {Leuven, Belgium},
pages = {141--149},
numpages = {9},
publisher = {Eurographics Association},
address = {Aire-la-Ville, Switzerland, Switzerland},
}