An Investigation of Optimal Light Source Setups for Photometric Stereo Reconstruction of Historical Coins

In this paper, we address the 3D reconstruction of historical coins by means of Photometric Stereo. We investigate the influence of the number and arrangement of lights to the reconstruction quality by comparing mean angular errors on 22 historical coin models. Our results demonstrate that 6 lights...

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Bibliographic Details
Main Authors Brenner, Simon, Zambanini, Sebastian, Sablatnig, Robert
Format Data Set
LanguageEnglish
Published The Eurographics Association 2018
Subjects
Computing methodologies
D imaging
Reconstruction
Shape inference
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Summary:In this paper, we address the 3D reconstruction of historical coins by means of Photometric Stereo. We investigate the influence of the number and arrangement of lights to the reconstruction quality by comparing mean angular errors on 22 historical coin models. Our results demonstrate that 6 lights circularly placed at an optimal elevation angle do not show a significant loss of reconstruction quality compared to a full semispherical dome setup with 54 lights. This represents a considerable saving of acquisition time and system complexity when it comes to the mass digitization of historical coins.
Bibliography:Eurographics Workshop on Graphics and Cultural Heritage
CCS Concepts: Computing methodologies --> 3D imaging; Reconstruction; Shape inference
203
3D Scanning and Digitization
206
2312-6124
Simon Brenner, Sebastian Zambanini, and Robert Sablatnig
https://diglib.eg.org/bitstream/handle/10.2312/gch20181362/203-206.pdf
978-3-03868-057-4
ISSN:2312-6124
DOI:10.2312/gch.20181362