| Egenhofer, M.J., [1994]. "Pre-processing Queries with spatial constraints", Photogrammetric Engineering and Remote sensing, 60(6), 783-790. |
....the smallest number of relations required to fully specify a scene. For example, detailed cardinal directions imply their corresponding coarse cardinal directions. The actual number of spatial relations to be considered for processing a particular query is an issue of spatial query optimization [8]. In the following, we discuss the models used for the five types of spatial relations. 4.1 Coarse Topological Relations We base the analysis of topological relations on the 9 intersection, a comprehensive model for binary topological relations that applies to objects of type area, line, and ....
M. Egenhofer, "Pre-Processing Queries with Spatial Constraints," Photogrammetric Engineering & Remote Sensing, vol. 60, no. 6, pp. 783-790, 1994.
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Egenhofer, M.J., [1994]. "Pre-processing Queries with spatial constraints", Photogrammetric Engineering and Remote sensing, 60(6), 783-790.
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