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Evaluation of Topological Consistency in CityGML

Giovanella, Anna; Bradley, Patrick Erik; Wursthorn, Sven

Abstract:
Boundary representation models are data models that represent the topology of a building or city model. This leads to an issue in combination with geometry, as the geometric model necessarily has an underlying topology. In order to allow topological queries to rely on the incidence graph only, a new notion of topological consistency is introduced that captures possible topological differences between the incidence graph and the topology coming from geometry. Intersection matrices then describe possible types of topological consistency and inconsistency. As an application, it is examined which matrices can occur as intersection matrices, and how matrices from topologically consistent data look. The analysis of CityGML data sets stored in a spatial database system then shows that many real-world data sets contain many topologically inconsistent pairs of polygons. It was observed that even if data satisfy the val3dity test, they can still be topologically inconsistent. On the other hand, it is shown that the ISO 19107 standard is equivalent to our notion of topological consistency. In the case when the intersection is a point, topological inconsistency occurs because a vertex lies on a line segment. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000095760
Veröffentlicht am 14.06.2019
Coverbild
Zugehörige Institution(en) am KIT Institut für Photogrammetrie und Fernerkundung (IPF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2220-9964
KITopen-ID: 1000095760
Erschienen in ISPRS International Journal of Geo-Information
Band 8
Heft 6
Seiten Article: 278
Projektinformation DFG, DFG EIN, BR 3513/12-1
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte topology; topological consistency; CityGML; 3D Model; spatial database; polygon; geometry
Nachgewiesen in Scopus
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