Combined 3D survey and Ai techniques for enhancing Fortified Heritage.

Military heritage is closely linked to the history of human settlements and territories, since in any era, military structures have been a major concern for communities, and are well-known examples of the strong connection between human activities and the natural environment. In this sense, military heritage is included within the broader context of defensive landscapes, constituting a perfect example of the integration between human labour and nature, where tangible and intangible heritage are intrinsically linked. The research aims to define the morphology and characterise the context of examples of the vast infrastructure of the Alpine region through military underground structures constructed in reinforced concrete (Opere) in the decades preceding World War II and known as the Vallo Alpino Littorio. The knowledge gathering approach is conducted through metric surveying and 3D modeling using multi-sensor techniques (photogrammetry and laser scanning). The nature of defensive structures to guarantee inviolability makes them difficult to access or completely inaccessible today, and above all to define the relationship with the context which is often wooded or in any case rich in vegetation, AI techniques are useful to support their documentation aimed at enhancements and possibly re-use.