Reich, Johannes; Steiner, Philipp; Ballmer, Ariane; Emmenegger, Lea; Hostettler, Marco; Stäheli, Corinne; Naumov, Goce; Taneski, Bojan; Todoroska, Valentina; Schindler, Konrad; Hafner, Albert (2021). A novel Structure from Motion-based approach to underwater pile field documentation. Journal of Archaeological Science: Reports, 39(103120), p. 103120. Elsevier 10.1016/j.jasrep.2021.103120
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This article presents a novel methodology to the underwater documentation of pile fields in archaeological lakeside settlement sites using Structure from Motion (SfM). Mapping the piles of such sites is an indispensable basis to the exploitation of the high resolution absolute chronological data gained through dendrochronology. In a case study at the underwater site of Ploča, Mičov Grad at Lake Ohrid, North Macedonia, nine consecutive 10 m2 strips and a 6 m2 excavation section were uncovered, the situation documented, and the wood piles sampled. The gained data was vectorized in a geographic information system. During two field campaigns, a total of 794 wooden elements on a surface of 96 m2 could be documented three-dimensionally with a residual error of less than 2 cm. The exceptionally high number of fishes in the 5 m deep water resulted in a significant covering of potentially important information on the relevant photos. We present a machine learning approach, especially developed and successfully applied to the automatic detection and masking of these fishes in order to eliminate them from the images. The discussed documentation workflow enables an efficient, cost-effective, accurate and reproducible mapping of pile fields. So far, no other method applied to the recording of pile fields has allowed for a comparably high resolution of spatial information.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
06 Faculty of Humanities > Department of History and Archaeology > Institute of Archaeological Sciences > Pre- and Early History 06 Faculty of Humanities > Department of History and Archaeology > Institute of Archaeological Sciences |
Graduate School: |
Graduate School of Climate Sciences |
UniBE Contributor: |
Reich, Johannes Jakob, Ballmer, Ariane Thu, Emmenegger, Lea Meret, Hostettler, Marco, Stäheli, Corinne Silvia, Hafner, Albert |
Subjects: |
900 History > 930 History of ancient world (to ca. 499) |
ISSN: |
2352-409X |
Publisher: |
Elsevier |
Funders: |
[UNSPECIFIED] Institut für Archäologische Wissenschaften, Universität Bern ; [UNSPECIFIED] Gesellschaft für Schweizer Unterwasserarchäologie ; [68] Fondation Johanna Dürmüller-Bol ; [18] European Research Council |
Projects: |
[UNSPECIFIED] Exploring the dynamics and causes of prehistoric land use change in the cradle of European farming (EXPLO) |
Language: |
English |
Submitter: |
Johannes Jakob Reich |
Date Deposited: |
12 Aug 2021 08:19 |
Last Modified: |
05 Dec 2022 15:52 |
Publisher DOI: |
10.1016/j.jasrep.2021.103120 |
Uncontrolled Keywords: |
Underwater archaeology Prehistoric lakeside settlements Pile fields 3D-documentation Photogrammetry Structure from Motion (SfM) Deep Convolutional Neural Network |
BORIS DOI: |
10.48350/157976 |
URI: |
https://boris.unibe.ch/id/eprint/157976 |
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