Volume XLII-2/W5
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W5, 489-495, 2017
https://doi.org/10.5194/isprs-archives-XLII-2-W5-489-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W5, 489-495, 2017
https://doi.org/10.5194/isprs-archives-XLII-2-W5-489-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

  21 Aug 2017

21 Aug 2017

PHOTOGRAMMETRIC RECORDING AND RECONSTRUCTION OF TOWN SCALE MODELS – THE CASE OF THE PLAN-RELIEF OF STRASBOURG

H. Macher1, P. Grussenmeyer1, T. Landes1, G. Halin2, C. Chevrier2, and O. Huyghe3 H. Macher et al.
  • 1Photogrammetry and Geomatics Group, ICube Laboratory UMR 7357, INSA Strasbourg, France
  • 2MAP-CRAI, UMR 3495, ENSA of Nancy, School of Architecture, France
  • 3INGEO company, Engineering – Land surveyor, 62502 Saint-Omer CEDEX, France

Keywords: Town scale model, Photogrammetry, Point cloud, Segmentation, 3D parametric modelling, Semantic enrichment

Abstract. The French collection of Plan-Reliefs, scale models of fortified towns, constitutes a precious testimony of the history of France. 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. In this paper, the photogrammetric recording of this scale model is first presented. The acquisition protocol as well as the data post-processing are detailed. Then, the modelling of the city and more specially building blocks is investigated. Based on point clouds of the scale model, the extraction of roof elements is considered. It deals first with the segmentation of the point cloud into building blocks. Then, for each block, points belonging to roofs are identified and the extraction of chimney point clouds as well as roof ridges and roof planes is performed. Finally, the 3D parametric modelling of the building blocks is studied by considering roof polygons and polylines describing chimneys as input. In a future works section, the semantically enrichment and the potential usage scenarios of the scale model are envisaged.