Abstract
Abstract. The scale models of fortified towns belonging to the Plans-Reliefs collection are exceptional witnesses of the formation of the French territory. The aim of the URBANIA project is the valorisation and the diffusion of this heritage through the creation of virtual models. The town scale model of Strasbourg at 1 : 600 currently exhibited in the Historical Museum of Strasbourg was selected as a case study. We develop and experiment an automatic procedure to identify and reconstruct military architecture works from point cloud digitisation of this fragile and bulky heritage. A priori knowledge formalized in a domain ontology informs the identification of the works – via geometrical feature comparison and consistency evaluation within the fortification system morphology – and their parametric 3D reconstruction refined by direct fit to the initial point cloud.
Highlights
Over the past ten years, the MAP laboratory has carried out several projects aimed at producing virtual mock-ups from scale models of ancient cities
The Plans-Reliefs is a collection of city-scale models and the testimony of Vauban styled fortified architecture, the foremost military engineer of Louis XIV
Mesh topology is conserved while its most salient points are attracted to their closest relatives on the point cloud, computed via k-Nearest Neighbours (KNN) search (Arya and Mount., 1993)
Summary
Over the past ten years, the MAP laboratory has carried out several projects aimed at producing virtual mock-ups from scale models of ancient cities. The Plans-Reliefs is a collection of city-scale models and the testimony of Vauban styled fortified architecture, the foremost military engineer of Louis XIV. Many cities represented in planreliefs are seeking a digital version, in order to shed light on their urban fabric and territory, uncover a multi-scale cultural value stemming from a city to a regional, national and European scale and to present its fascinating and attractive heritage property for tourism. Scale models have been the most effective mean of communication to represent architectures and cities. These objects suffer today from a lack of accessibility due to their size, state of conservation, number, etc. The plan-relief of Strasbourg (12 m x 6 m) is protected in a glass showcase that is difficult to access and in lighting conditions that are not suitable for photogrammetry
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