The Roman amphitheater of Venosa (Basilicata, southern Italy): 3D survey and reconstruction

The Roman amphitheater of Venosa (Potenza, southern Italy) is one of the experimental sites chosen as part of the IDEHA project (Innovation for Data Processing in Heritage Areas) in the Basilicata region, of which the CNR ISPC was scientific coordinator. This contribution presents the new results of the research more closely linked to the technical and constructive aspects of the monument, achieved starting from the instrumental survey performed with integrated techniques of laser scanning and digital photogrammetry. The metric data collected was integrated with those no longer visible that emerged during the archaeological excavation campaigns, which took place in 1841, 1925 and then in the 1980s and from a careful reconnaissance of the collapsed architectural elements present in situ. Despite the poor conditions of the wall structures, subject to centuries of abandonment and spoliations, it was possible to develop a reconstructive proposal for the amphitheater, with the creation of a three-dimensional model in which they critically merged all the collected data.