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Map generalization with a triangulated data structure / Christopher B. Jones in Cartography and geographic information systems, vol 22 n° 4 (December 1995)  

Public [article]  inCartography and geographic information systems > vol 22 n° 4 (December 1995) . - pp 317 - 331 Titre : Map generalization with a triangulated data structure Type de document : Article/Communication Auteurs : Christopher B. Jones, Auteur ; G.L. Bundy, Auteur ; J. Mark Ware, Auteur Année de publication : 1995 Article en page(s) : pp 317 - 331 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] conflit d'espace [Termes IGN] généralisation cartographique automatisée [Termes IGN] généralisation géométrique (de visualisation) [Termes IGN] intégrité topologique [Termes IGN] objet géographique [Termes IGN] primitive géométrique [Termes IGN] triangulation de Delaunay [Vedettes matières IGN] Généralisation Résumé : (Auteur) Automation of map generalization requires facilities to monitor the spatial relationships and interactions among multiple map objects. An experimental map generalization system has been developed which addresses this issue by representing spatial objects within a simplicial data structure (SDS) based on constrained Delaunay triangulation of the source data. Geometric generalization operators that have been implemented include object exaggeration, collapse, amalgamation, boundary reduction and displacement. The generalization operators exploit a set of primitive SDS functions to determine topological and proximal relationships, measure map objects, apply transformations, and detect and resolve spatial conflicts. Proximal search functions are used for efficient analysis of the structure and dimensions of the intervening spaces between map objects. Because geometric generalization takes place within a fully triangulated representation of the map surface, the presence of overlap conflicts, resulting from individual operators, can be detected due to the introduction of singularities in the triangulation, the structure of which is used to generate displacement vectors to resolve the conflict. Examples of the application of the implemented operators are described and illustrated using large scale topographic map data. Numéro de notice : A1995-003 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/152304095782540221 En ligne : https://www.tandfonline.com/doi/abs/10.1559/152304095782540221 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25733 [article]

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