3D modeling


Ancient shipwrecks provide the most direct and primary class evidence of seaborne trade and seafaring in the Mediterranean during antiquity. Their location, though, in an unfriendly environment for humans, makes their excavation very demanding in human resources and equipment. Therefore, it is essential to make the investigations cost- and effort- effective by using the best of the available tools, technical and technological. As good documentation (UNESCO, 2001) is a particularly crucial process for the post-excavation archaeological study and assessment of a shipwreck site, the use of elaborate mapping techniques is indispensable during the excavation.
Photogrammetry is a well adopted method for underwater mapping, since it is a non contact and non destructive technique. On the other hand, it is not a trivial task at all (Canciani et al., 2002; Ludvigsen et al., 2006; Drap et al., 2007; Chapman et al., 2010). By definition “Photogrammetry is the art, science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring, and interpreting photographic images and patterns of electromagnetic radiant energy and other phenomena” (Mc Glone, 2004). It is quite clear, that photogrammetry it is not a real-time or automated process. In fact most photogrammetric tasks are laborious and tedious. The much younger field of machine vision, takes advantage from computer vision algorithms and focuses on real time image exploitation for controlling a specific process or activity. Since photogrammetry’s entrance in the “digital era” it was a matter of time before embracing computer vision algorithms towards complete post- processing mapping automation.

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Archeolie 2014



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