3D historical models: the case studies of Liege and Nantes
Résumé
This article presents two 3D historical enriched models projects; Nantes 1900 and Virtual Leodium. They are both based on mock-ups realised in the early 20th century. They share the same goal; creating participatory and evolutionary historical knowledge models, built on a 3D virtual copy of original mock-ups. Both projects are described and compared with specific highlight on methodological similarities. Adopted laserscanning technologies and object reconstruction methods are described. Although information modelling strategies are a bit different, they both use, at least partially, CityGML standards for structuring 3D information. Challenges and future collaborations are sketched at the end of the paper.