Abstract
Surface shape metrology encompasses broad topics within cultural heritage science. However, most existing surface shape measurement systems are bulky and restricted to lab environments. As most are not practical for large, delicate or fixed works of art, such as stained-glass windows or oil-painted murals, we develop methods to measure matte and specular surfaces using hand-held mobile devices. In the 'Shape-from-Shifting' method, we use a hand-held cell-phone to capture surface normal maps computed with a near-light variant of photometric stereo from a shifting sequence of flash-lit photos. In the 'Multiview Deflectometry' method, 3D information of specular surfaces is calculated by observing the reflection of a tablet screen on the surface with the tablet's front facing camera. Both methods are fast, portable and easy to use for non-experts. We present case studies for each method: detecting protrusions growing in Georgia O'Keeffe paintings and identifying surface features of Tiffany stained glass.
Original language | English (US) |
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Title of host publication | Conference Record - 53rd Asilomar Conference on Circuits, Systems and Computers, ACSSC 2019 |
Editors | Michael B. Matthews |
Publisher | IEEE Computer Society |
Pages | 1779-1782 |
Number of pages | 4 |
ISBN (Electronic) | 9781728143002 |
DOIs | |
State | Published - Nov 2019 |
Event | 53rd Asilomar Conference on Circuits, Systems and Computers, ACSSC 2019 - Pacific Grove, United States Duration: Nov 3 2019 → Nov 6 2019 |
Publication series
Name | Conference Record - Asilomar Conference on Signals, Systems and Computers |
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Volume | 2019-November |
ISSN (Print) | 1058-6393 |
Conference
Conference | 53rd Asilomar Conference on Circuits, Systems and Computers, ACSSC 2019 |
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Country/Territory | United States |
City | Pacific Grove |
Period | 11/3/19 → 11/6/19 |
Funding
This project was supported by the National Science Foundation (NSF), National Endowment for the Humanities (NEH) and the Andrew W. Mellon Foundation to the Center for Scientific Studies in the Arts.
Keywords
- 3D Surface Shape Reconstruction
- Cultural Heritage
- Deflectometry
- Feature Identification
- Mobile Devices
- Painting
- Photometric Stereo
- Protrusion Detection
- Stained Glass
ASJC Scopus subject areas
- Signal Processing
- Computer Networks and Communications