Towards a three-dimensional cost-effective registration of the archaeological heritage |
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Authors: | Jeroen De Reu Gertjan Plets Geert Verhoeven Philippe De Smedt Machteld Bats Bart Cherretté Wouter De Maeyer Jasper Deconynck Davy Herremans Pieter Laloo Marc Van Meirvenne Wim De Clercq |
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Affiliation: | 1. Department of Archaeology, Ghent University, Sint-Pietersnieuwstraat 35, B-9000 Ghent, Belgium;2. Research Group Soil Spatial Inventory Techniques, Dept. of Soil Management, Ghent University, Coupure 653, B-9000 Ghent, Belgium;3. SOLVA, Zuid III, Industrielaan 18, B-9320 Aalst (Erembodegem), Belgium;4. GATE bvba, Eindeken 18, B-9940 Evergem, Belgium |
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Abstract: | Archaeological practice within the European context of heritage management is facing huge challenges in ways of recording and reproduction of ex-situ preserved sites. As a consequence of the Valletta-treaty, numbers of archived images and drawings of excavated structures as prime sources of past human activity, are exponentially growing. Contrarily to portable remains however, their future study and revision is biased by the two-dimensional character of the recorded data, rendering difficult their future reconstruction for new study or public dissemination. A more realistic three-dimensional (3D) way of recording and archiving should be pursued. In this paper the possibilities for 3D registration of archaeological features are examined in a computer vision-based approach using the PhotoScan software package (Agisoft LCC). It proved to be a scientific and cost-effective improvement compared to traditional documentation methods. Advantages can be found in the high accuracy and straightforwardness of the methodology. The extraction of an orthophoto or a Digital Terrain Model from the 3D model makes it feasible to integrate detailed and accurate information into the digital archaeological excavation plan. The visual character of 3D surface modeling offers enhanced output-possibilities allowing a better documentation of in-situ structures for future research and a higher public participation and awareness for the archaeological heritage. |
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