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Analysis of surface changes using primitive events / Yukio Sadahiro in International journal of geographical information science IJGIS, vol 15 n° 6 (september 2001)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 15 n° 6 (september 2001) . - pp 523 - 538 Titre : Analysis of surface changes using primitive events Type de document : Article/Communication Auteurs : Yukio Sadahiro, Auteur Année de publication : 2001 Article en page(s) : pp 523 - 538 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] analyse spatio-temporelle [Termes IGN] détection de changement [Termes IGN] données spatiotemporelles [Termes IGN] érosion [Termes IGN] primitive [Termes IGN] relation topologique [Termes IGN] système d'information géographique Résumé : (Auteur) This paper develops a method for analysing changes in a surface, a scalar function defined over a two-dimensional region. The method is based on the topological method for a static surface that uses critical points (peaks, bottoms, and cols) and their connecting lines. To extend the topological method to spatio-temporal domain, four types of primitive events are proposed : 1) generation, 2) disappearance, 3) movement, and 4) switch. The change of a surface is described by a combination of these primitives. From sufaces of two times a set of primitive events that cause the change is deduced. They are stored in GIS as spatial objects with attributes, and their spatio-temporal pattern is visually analysed. To test the validity of the method, the change of retail cluster in Shinjuku and Shibuya area in Tokyo is analysed. The empiracal study yielded some interesting finding that help us changes in the spatial structure of retailing. Numéro de notice : A2001-078 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810110060433 En ligne : https://doi.org/10.1080/13658810110060433 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21777 [article]

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