3D Digital Reconstructions of Lost Buildings: A first critical framing

This paper presents a first critical framing of 3D digital reconstructions of lostbuildings, hence focusing on reconstructions using 3D models. This criticalframing is constituted by reflections on definitions, concepts, methodologies and digital technologies. Much experimentation in the digital reconstruction of lost buildings has produced valuable results during the last twenty years, but the variety of methods, software types, and purposes should be reorganized into clear operational protocols to allow sharing of information and collaboration across disciplines. We have therefore investigated the diverse approaches towards digital reconstructions of lost buildings and found that digital reconstructions are not typically aimed at simple visualizations: they are often further developed in virtual environments, information systems and tools for simulations and analysis.In this sense they are not products but instruments for further research and/or heritage conservation. Counter the large number of theoretical positions,methods and tools specific to different disciplines, such as architecture and archaeology, we can find the almost total absence of a comprehensive critical assessment. This paper, which is part of a larger project, intends to open and articulate a debate on how to define, analyze and critically systematize the methodologies for the digital reconstruction of lost buildings.