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3D Geoinformation Science

Part of the series Lecture Notes in Geoinformation and Cartography pp 1-17

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Improving the Consistency of Multi-LOD CityGML Datasets by Removing Redundancy

  • Filip BiljeckiAffiliated withSection GIS Technology, Delft University of Technology Email author 
  • , Hugo LedouxAffiliated withSection GIS Technology, Delft University of Technology
  • , Jantien StoterAffiliated withSection GIS Technology, Delft University of TechnologyKadaster, Product and Process InnovationGeonovum

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Abstract

The CityGML standard enables the modelling of some topological relationships, and the representation in multiple levels of detail (LODs). However, both concepts are rarely utilised in reality. In this paper we investigate the linking of corresponding geometric features across multiple representations. We describe the possible topological cases, show how to detect these relationships, and how to store them explicitly. A software prototype has been implemented to detect matching features within and across LODs, and to automatically link them by establishing explicit topological relationships (with XLink). The experiments ran on our test datasets show a considerable number of matched geometries. Further, this method doubles as a lossless data compression method, considering that the storage footprint in the consolidated datasets has been reduced from their dissociated counterparts.

Keywords

Multi-LOD Topology XLink CityGML Compression