From SfM acquisition of the current state to the as-built model state. The village of Pietrapizzuta in Francavilla di Sicilia

The article focus on Information and Communication Technologies (ICT) for Cultural and Environmental Heritage. More specifically the case study deals with an area of the 20th-century Italian heritage that is now abandoned and in ruins, the village of Pietrapizzuta, an area of the larger village of Schisina, designed in 1942 and built in the 1950s by the Ente di Riforma Agraria in the municipality of Francavilla di Sicilia (ME). Inhabiting Space, in this case, to reflect on the impact of natural ecological disasters and human carelessness on Cultural Heritage. The model was developed starting with Structure from Motion (SfM) video acquisition using an unmanned aircraft system (UAS). With respect to the multi-scalar nature of the final model, two different work flows were established, one relating to the entire settlement and another processed using dedicated images aimed at reconstructing a single building. The dimensional characteristics of the complex, the simple orography with slight slope undoubtedly favored the development of a fully verified SfM reconstruction model in terms of shape and metric reliability. The idespread state of ruin of the site, favoring a detailed analysis of the techniques and materials used, required particular attention when selecting the materials used to develop the textures for the as-built model. Multimedia archival images were also used to obtain a rendering that could approach the perceptible representation when finalizing the construction.