Revealing Pentimenti Through Raking Angle Photography
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Date
2008
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
Discovering hidden details in historical paintings, such as pentimenti, can help reveal historical influences and changing intentions of an artist. Top-down photographs of visible light historical paintings do not capture much of the finer surface detail on the object being photographed. We present a technique using only visible light photography with a specially constructed octagonal reflector to aid the discovery of hidden details in historical paintings, by measuring Fresnel reflectance effects through raking angle photography. We exploit the significantly higher reflectance of dielectric surfaces at low angles to reveal hidden details that are otherwise not visible through ordinary photography. We also present a way to explore the details both statically and interactively.
Description
@inproceedings{10.2312:egs.20081023,
booktitle = {Eurographics 2008 - Short Papers},
editor = {Katerina Mania and Eric Reinhard},
title = {{Revealing Pentimenti Through Raking Angle Photography}},
author = {Cheung, Chi Yin and Mohan, Ankit and Tumblin, Jack},
year = {2008},
publisher = {The Eurographics Association},
ISBN = {},
DOI = {10.2312/egs.20081023}
}