منابع مشابه
Point-Set Topological Spatial Relations
Practical needs in the realm of Geographic Information Systems (GISs) have driven the efforts to investigate formal and sound methods to describe spatial relations. After an introduction of the basic ideas and notions of topology, a novel theory of topological spatial relations between sets is developed in which the relations are defined in terms of the intersections of the boundaries and inter...
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Egenhofer and Franzosa's model of fundamental topological relations for spatial regions has received a lot of research attention in geographic information systems and spatial databases. We propose a new way of computing these topological relations with much less storage requirement. We investigate diierent cases where the new approach can perform even better than the original approach in terms ...
متن کاملModeling Topological Spatial Relations
This paper investigates the processing of spatial queries with topological constraints, for which current database solutions are inappropriate. Topological relations, such as disjoint, meet, overlap, inside, and contains, have been well defined by the 9-intersection, a comprehensive model for binary topological relations. We focus on two types of queries: (1) “Which objects have a stated topolo...
متن کاملTopological Relations in Spatial Databases
Various models for the representation of topological relations have been developed. The aim of this chapter is to propose a comprehensive view of state-of-the-art models for topological relations in spatial databases. A prominent role is assumed by the CBM (calculus-based method), which offers a small set of topological relations with high expressiveness and suitability to be embedded as operat...
متن کاملFuzzy spatial objects and their topological relations
†Centre for Research in Geomatics (CRG), Laval University, Quebec (QC) Canada – [email protected] ‡Industrial Research Chair in Geospatial Databases for Decision Support, Laval University, Quebec (QC), Canada – [email protected] §Cemagref-Clermont-Ferrand, France – [email protected] ††Dept. Computer Sciences, Blaise-Pascal University, Clermont-Ferrand, France – michel.s...
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ژورنال
عنوان ژورنال: International journal of geographical information systems
سال: 1991
ISSN: 0269-3798
DOI: 10.1080/02693799108927841