ICL Multispectral Light Stage: Building a Versatile LED Sphere with Off-the-shelf Components
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Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We describe the design and implementation of a versatile multispectral light stage (LED sphere) consisting of 168 RGB and color temperature controllable white (W+) lamps, respectively. The light stage is powered with two sets of off-the-shelf programmable MR16 LED lamps producing RGB and color temperature controllable white (2700K - 5700K) illumination. The design is heavily inspired by various USC-ICT light stages, particularly Light Stages 3, 5 and X. However, unlike a typical geodesic (subdivided icosahedron) dome structure, the structure of the LED sphere has been fabricated along spherical coordinates with latitude-longitude profiles for a simplified wiring and control layout of the LED lamps, and for simplifying polarization of incident illumination. These design decisions facilitate construction while providing a versatile solution for a variety of applications including reflectance capture, image-based lighting reproduction, and multiview facial geometry and appearance acquisition.
Description
@inproceedings{10.2312:mam.20181190,
booktitle = {Workshop on Material Appearance Modeling},
editor = {Reinhard Klein and Holly Rushmeier},
title = {{ICL Multispectral Light Stage: Building a Versatile LED Sphere with Off-the-shelf Components}},
author = {Kampouris, Christos and Ghosh, Abhijeet},
year = {2018},
publisher = {The Eurographics Association},
ISSN = {2309-5059},
ISBN = {978-3-03868-055-0},
DOI = {10.2312/mam.20181190}
}