ICL Multispectral Light Stage: Building a Versatile LED Sphere with Off-the-shelf Components

Kampouris, Christos; Ghosh, Abhijeet

ICL Multispectral Light Stage: Building a Versatile LED Sphere with Off-the-shelf Components

Files

001-004.pdf (11.83 MB)

Date

2018

Authors

Kampouris, Christos
Ghosh, Abhijeet

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.

        @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
}
}