A system for high-volume acquisition and matching of fresco fragments
| Autor: | Diego Nehab, Tim Weyrich, Benedict Brown, Andreas Vlachopoulos, Szymon Rusinkiewicz, Corey Toler-Franklin, Michael Burns, Christos Doumas, David P. Dobkin |
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| Rok vydání: | 2008 |
| Předmět: |
Matching (statistics)
Painting Artifact (error) Computer science Fragment (computer graphics) business.industry Volume (computing) 3d scanning Computer Graphics and Computer-Aided Design Metadata Computer graphics (images) Computer vision Artificial intelligence Fresco Scale (map) business Blossom algorithm |
| Zdroj: | ACM Transactions on Graphics. 27:1-9 |
| ISSN: | 1557-7368 0730-0301 |
| DOI: | 10.1145/1360612.1360683 |
| Popis: | Although mature technologies exist for acquiring images, geometry, and normals of small objects, they remain cumbersome and time-consuming for non-experts to employ on a large scale. In an archaeological setting, a practical acquisition system for routine use on every artifact and fragment would open new possibilities for archiving, analysis, and dissemination. We present an inexpensive system for acquiring all three types of information, and associated metadata, for small objects such as fragments of wall paintings. The acquisition system requires minimal supervision, so that a single, non-expert user can scan at least 10 fragments per hour. To achieve this performance, we introduce new algorithms to robustly and automatically align range scans, register 2-D scans to 3-D geometry, and compute normals from 2-D scans. As an illustrative application, we present a novel 3-D matching algorithm that efficiently searches for matching fragments using the scanned geometry. |
| Databáze: | OpenAIRE |
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