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Arroyo Ohori, K. (author), Damiand, G. (author), Ledoux, H. (author)
There is substantial value in the use of higher-dimensional (>3D) digital objects in GIS that are built from complex real-world data. This use is however hampered by the difficulty of constructing such objects. In this paper, we present a dimension independent algorithm to build an n-dimensional cellular complex with linear geometries from its...
conference paper 2013
document
Arroyo Ohori, K. (author), Ledoux, H. (author), Stoter, J. (author)
Real-world phenomena have traditionally been modelled in 2D/3D GIS. However, powerful insights can be gained by integrating additional non-spatial dimensions, such as time and scale. While this integration to form higher-dimensional objects is theoretically sound, its implementation is problematic since the data models used in GIS are not...
conference paper 2013
document
Arroyo Ohori, K. (author), Biljecki, F. (author), Stoter, J. (author), Ledoux, H. (author)
Real-world phenomena have traditionally been modelled in a GIS in two and three dimensions. However, powerful insights can be gained by the integration of additional non-spatial dimensions, such as time and scale, in a higher dimensional spatial model. While this theory is conceptually sound, there is a lack of understanding of its consequences...
conference paper 2013
document
Stoter, J.E. (author), Ledoux, H. (author), Meijers, B.M. (author), Arroyo Ohori, G.A.K. (author)
This paper presents the problem of the current separate treatment of levels of detail in city models. We propose a solution, detail the main principles, and present our initial results on the approach. We conclude with work in progress and explain the benefits of our approach.
conference paper 2012
document
Stoter, J. (author), Ledoux, H. (author), Meijers, M. (author), Arroyo Ohori, K. (author), Van Oosterom, P. (author)
As explained in van Oosterom & Stoter (2012), the nD modeling approach allows us to include different aspects of geo-information in spatial modeling at a fundamental level, i.e. by treating these aspects as additional (geometric) dimensions. This paper explains how nD data models and data structures may solve the issues of redundancy and...
conference paper 2012
document
Ledoux, H. (author), Arroyo Ohori, K. (author), Meijers, M. (author)
Although the validation of single polygons has received considerable attention, the automatic repair of invalid polygons has not. Automated repair methods can be considered as interpreting ambiguous or ill-defined polygons and giving a coherent and clearly defined output. At this moment, automatic tools are not satisfactory and repairing is thus...
conference paper 2012
document
Ledoux, H. (author), Arroyo Ohori, K. (author)
While the edge-matching problem is usually tackled by snapping geometries within a certain threshold, we argue in this paper that this method is error-prone and often leads to geometries that are invalid. We present a novel edge-matching algorithm for polygons where vertices are not moved (no snapping is involved); instead gaps and overlaps...
conference paper 2011
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