In this paper we address the problem of formalizing qualitative topological relationships between geographical objects in a Geographical Pictorial Query Language (GeoPQL) in order to completely capture the semantics of the user queries. We focus on the polygon-polyline topological relation and we define a 16-intersection matrix that has been conceived to enhance and distinguish the semantics of cells' content with respect to the well-known 9-intersection matrix. On the basis of such distinctions, we revise the geographic operators of GeoPQL and we give their formal semantics. In order to implement our proposed 16-matrix, we invoked in GeoPQL the open source Java libraries JTS Topology Suite, which conforms to the Simple Features Specification for SQL published by the Open GIS Consortium-OGC. Finally, the proposed 16-intersection matrix is illustrated through some query examples. © 2012 IFIP International Federation for Information Processing.
CITATION STYLE
Formica, A., Mazzei, M., Pourabbas, E., & Rafanelli, M. (2012). A 16-intersection matrix for the polygon-polyline topological relation for geographic pictorial query languages. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 7465 LNCS, pp. 302–316). https://doi.org/10.1007/978-3-642-32498-7_23
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