Abstract
X-rays micro-Computed Tomography (X-μCT) is a non-invasive and non-destructive technique primarily used for the 3D reconstruction of internal/external object structures. Despite the great potential, X-ray exposure for samples of archaeo-anthropological interest can compromise the integrity of the finds, altering the results for future investigations. The aim of this study is to evaluate whether close-range photogrammetry is a viable alternative in terms of non-invasiveness, low cost, efficiency and precision to the 3D external surface models with respect to X-μCT scanning. Photogrammetry was applied to small and highly diagenized archaeological human teeth characterized by irregular and fragmented surfaces. The accuracy of the 3D model and the metric information obtained from photogrammetry was evaluated comparing the micro-measurements obtained by digital caliper and Confocal laser scanning microscope (CLMS). The results obtained show the effectiveness of close-range photogrammetry to create a 3D model with metric information as accurate as those from micro-CT, with the advantage of reproducing textural information.
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