The recent advances in digital technology and mechatronic systems, by radically transforming the survey methodologies, have changed the approaches in analysis, visualization and management of the cultural heritage of buildings and historical sites.

One of the most recent applications of digital technology in the field of geomatics is related to the introduction of Unmanned Aerial Vehicles (UAVs), also known as drones, that consist of remotely controlled aircrafts. Thanks to their small size and to the simplicity of use, they can navigate into places characterized by difficult accessibility or located in dangerous positions. Subject of the latest scientific researches is the application of UAV-based photogrammetry to Structure from Motion (SfM) and MultiView Stereo (MVS) techniques, derived from Computer Vision, aiming at the study of post-catastrophe scenarios, in which the traditional ground-based survey technologies cannot be carried out. The integrated digital systems and photo-modeling technologies allow to obtain a study model, in a three-dimensional view, of a certain site and at a defined scale, even in cases where a terrestrial photogrammetry is not allowed and the places are inaccessible. This methodology was applied to the case study of Castelluccio di Norcia, a village of the Municipality of Norcia (Umbria), that was largely destroyed by the earthquake that hit Central Italy in 2016, on October 30th.