ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Volume II-2/W2
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-2/W2, 1–8, 2015
https://doi.org/10.5194/isprsannals-II-2-W2-1-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., II-2/W2, 1–8, 2015
https://doi.org/10.5194/isprsannals-II-2-W2-1-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

  19 Oct 2015

19 Oct 2015

STORING A 3D CITY MODEL, ITS LEVELS OF DETAIL AND THE CORRESPONDENCES BETWEEN OBJECTS AS A 4D COMBINATORIAL MAP

K. Arroyo Ohori, H. Ledoux, and J. Stoter K. Arroyo Ohori et al.
  • 3D Geoinformation, Delft University of Technology, Delft, the Netherlands

Keywords: level of detail (LOD), 4D, multi-dimensional GIS, combinatorial maps

Abstract. 3D city models of the same region at multiple LODs are encumbered by the lack of links between corresponding objects across LODs. In practice, this causes inconsistency during updates and maintenance problems. A radical solution to this problem is to model the LOD of a model as a dimension in the geometric sense, such that a set of connected polyhedra at a series of LODs is modelled as a single polychoron—the 4D analogue of a polyhedron. This approach is generally used only conceptually and then discarded at the implementation stage, losing many of its potential advantages in the process. This paper therefore shows that this approach can be instead directly realised using 4D combinatorial maps, making it possible to store all topological relationships between objects.