How 3D models (photogrammetry) of rock art can improve recording veracity: a case study from Kakadu National Park, Australia
Date
2020
Authors
Jalandoni, A.
May, S.K.
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Journal article
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Australian Archaeology, 2020; 86(2):137-146
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Andrea Jalandoni and Sally K. May
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Abstract
Creating an inventory of a rock art site in the field can be time-consuming and expensive, but Structure-from-Motion (SfM) photogrammetry has the potential to alleviate these issues. Using SfM, rock art sites can be recorded rapidly, with a 3D model created to allow a digital inventory to be compiled. However, the veracity of a digital inventory can be questioned. At the Blue Paintings site in Kakadu National Park, Australia, we tested two field inventories against a digitally-derived inventory and ground-truthed the results. The results demonstrated that the digitally-derived inventory was slightly less comprehensive than the field recordings, but only unidentified lines and blotches were lacking; this would not necessarily adversely influence interpretation. Furthermore, the field inventories conducted by different people also had variations, demonstrating that whether the inventory is done on a 3D model or in the field, an inventory is still a human interpretation.
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© 2020 Australian Archaeological Association