3D Semantic Modelling of Scale Models from 2D Historical Plans

Abstract

The French collection of Plans-Reliefs, scale models of fortified towns, are an exceptional architectural heritage. Many cities, represented on these plans-reliefs, would like to expose, develop and exploit this historical knowledge. However, the fragility, the dimension of the supports and the exposure conditions make this acquisition difficult. Thus, the creation and the exploitation of a virtual model is an interesting alternative. This paper presents a new method exploiting historical documentary for the 3D semantic modelling of Plans-Reliefs as more than the half physical Plans-Reliefs are currently enclosed in containers in Paris. From 2D plans, ground outlines and facades of buildings are partially-automatically extracted to create automatically the 3D textured model of each building and ground elements (streets, rivers and courtyards). Another specificity of the method is the use of graphical schemes for the description of parametric objects.