Integrated High-Quality Acquisition of Geometry and Appearance for Cultural Heritage
Abstract
Current research trends demonstrate that, for a wide range of applications in cultural heritage, 3D shape acquisition alone is not sufficient. To generate a digital replica of a real world object the digitized geometric models have to be complemented with information pertaining to optical properties of the object surface. We therefore propose an integrated system for acquiring both the 3D shape and reflectance properties necessary for obtaining a photo-realistic digital replica. The proposed method is suitable for the digitization of objects showing the complex reflectance behavior, for example specularities and meso-scale interreflections, often encountered in the field of cultural heritage. We demonstrate the performance of our system with four challenging examples. By using Bidirectional Texture Functions, our structured light based approach is able to achieve good geometric precision while preserving tiny details such as scratches and engravings.
Keywords: 3D scanning, BTF, BTF acquisition, BTF compression, BTF resampling, cultural heritage, digitization, geometry acquisition, virtual replicas
Weblinks
- Download datasets used in the paper
- View digitized objects in interactive WebGL-Viewer
- Video demonstrating the 3D acquisition process
Images
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Additional Material
- Videocomparison: geometry, texture and BTF under global illumination (WMV video, 44 MB)
- Presentation slides (PDF document, 5.0 MB)
- Screencapture of interactive inspection of Buddha (WMV video, 9.3 MB)
- Screencapture of interactive inspection of Donkey (WMV video, 3.9 MB)
- Screencapture of interactive inspection of Minotaur (WMV video, 9.3 MB)
- Screencapture of interactive inspection of Samurai (WMV video, 8.9 MB)
Bibtex
@INPROCEEDINGS{schwartz-2011-hqdomeacquisition, author = {Schwartz, Christopher and Weinmann, Michael and Ruiters, Roland and Klein, Reinhard}, pages = {25--32}, title = {Integrated High-Quality Acquisition of Geometry and Appearance for Cultural Heritage}, booktitle = {The 12th International Symposium on Virtual Reality, Archeology and Cultural Heritage VAST 2011}, year = {2011}, month = oct, publisher = {Eurographics Association}, location = {Prato, Italy}, organization = {Eurographics Association}, keywords = {3D scanning, BTF, BTF acquisition, BTF compression, BTF resampling, cultural heritage, digitization, geometry acquisition, virtual replicas}, abstract = {Current research trends demonstrate that, for a wide range of applications in cultural heritage, 3D shape acquisition alone is not sufficient. To generate a digital replica of a real world object the digitized geometric models have to be complemented with information pertaining to optical properties of the object surface. We therefore propose an integrated system for acquiring both the 3D shape and reflectance properties necessary for obtaining a photo-realistic digital replica. The proposed method is suitable for the digitization of objects showing the complex reflectance behavior, for example specularities and meso-scale interreflections, often encountered in the field of cultural heritage. We demonstrate the performance of our system with four challenging examples. By using Bidirectional Texture Functions, our structured light based approach is able to achieve good geometric precision while preserving tiny details such as scratches and engravings.}, issn = {1811-864X}, isbn = {978-3-905674-34-7}, url = {http://diglib.eg.org/EG/DL/WS/VAST/VAST11/025-032.pdf}, doi = {10.2312/VAST/VAST11/025-032} }