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Unsing spatial continuity and discontinuity information to retrieve geographic entities / Z. Xie in Geocarto international, vol 24 n° 1 (February - March 2009)  

Public [article]  inGeocarto international > vol 24 n° 1 (February - March 2009) . - pp 3 - 23 Titre : Unsing spatial continuity and discontinuity information to retrieve geographic entities Type de document : Article/Communication Auteurs : Z. Xie, Auteur ; L. Bian, Auteur Année de publication : 2009 Article en page(s) : pp 3 - 23 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] détection de contours [Termes IGN] discontinuité [Termes IGN] objet géographique [Termes IGN] photographie aérienne [Termes IGN] photographie numérique [Termes IGN] reconnaissance d'objets [Termes IGN] variogramme Résumé : (Auteur) This paper presents three methods for representing spatial properties of geographic entity types in order to retrieve digital aerial photographs that contain these types. The three methods are semivariogram, edge tracing and an integration of the two methods. The first two methods are used to represent spatial continuity and spatial discontinuity information, respectively, associated with geographic entities, while the integrated method is used to represent both properties. The three methods are used to retrieve seven land cover types; factories, shopping centres, highways, forest, farmland, grasses and residential areas. Results show that between the two independent methods, the semivariogram method generally produces higher retrieval precision and more consistency across the seven types than the edge tracing method. The integrated method considerably outperforms the two independent methods. Copyright Taylor & Francis Numéro de notice : A2009-021 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040801995828 Date de publication en ligne : 27/07/2009 En ligne : https://doi.org/10.1080/10106040801995828 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29651 [article]

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