Article (Scientific journals)
Modeling and computing ternary projective relations between regions
Clementini, Eliseo; Billen, Roland
2006In IEEE Transactions on Knowledge and Data Engineering, 18 (6), p. 799-814
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Keywords :
spatial databases; spatial queries; projective relations; geographic information systems
Abstract :
[en] Current spatial database systems offer limited querying capabilities beyond binary topological relations. This paper introduces a model for projective relations between regions to support other qualitative spatial queries. The relations are ternary because they are based on the collinearity invariant of three points under projective geometry. The model is built on a partition of the plane into separate zones that are obtained from projective properties of two reference objects: Then, by considering the empty/ nonempty intersections of a primary object with these zones, the model is able to distinguish between 34 different projective relations. Then, the paper proposes original algorithms for computing the relations under the assumption that regions of the plane are stored as vector polygons in a spatial database. These algorithms run in optimal O(n log n) time.
Disciplines :
Earth sciences & physical geography
Computer science
Author, co-author :
Clementini, Eliseo;  University of L'Aquila > Department of Electrical and Information Engineering
Billen, Roland  ;  Université de Liège - ULiège > Département de géographie > Unité de Géomatique - Topographie et géométrologie
Language :
English
Title :
Modeling and computing ternary projective relations between regions
Publication date :
June 2006
Journal title :
IEEE Transactions on Knowledge and Data Engineering
ISSN :
1041-4347
eISSN :
1558-2191
Publisher :
Ieee Computer Soc
Volume :
18
Issue :
6
Pages :
799-814
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 December 2008

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