Journal
JOURNAL OF ARCHAEOLOGICAL SCIENCE
Volume 66, Issue -, Pages 137-145Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jas.2016.01.002
Keywords
3D recording; Photogrammetry; Accuracy; Best practice; Historical architecture; Digital heritage; Olympia
Funding
- Department of Art Art History
- Hixson-Lied College of Fine and Performing Arts
- Center for Digital Research in the Humanities at the University of Nebraska-Lincoln
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Photogrammetry has become increasingly popular as a low-cost method for documenting cultural heritage and archaeological excavations. However, we have yet to establish best practices for its implementation at the site, or methods for assessing the accuracy of the resulting 3D measurements. This article presents a recent study of the Temple of Hera at Olympia, where a 25 x 55 m area was recorded at 1 mm resolution using photogrammetry both for survey and 3D reconstruction. Coded targets were set up throughout the site, which was then photographed in two phases. First, a site-wide survey established the locations of the network of targets. Second, sets of close-up photographs for detailed 3D reconstruction of the site were registered to the global survey via the targets. This technique developed at Olympia improves measurement accuracy by an order of magnitude compared to previous implementations, with a precision of at least 1 part in 50,000, and 95% of the surfaces located accurately within 2-3 mm. (C) 2016 Elsevier Ltd. All rights reserved.
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