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Generalization of 3D building data based on a scale-space approach / A. Forberg in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 2 (June 2007)  

Public [article]  inISPRS Journal of photogrammetry and remote sensing > vol 62 n° 2 (June 2007) . - pp 104 - 111 Titre : Generalization of 3D building data based on a scale-space approach Type de document : Article/Communication Auteurs : A. Forberg, Auteur Année de publication : 2007 Article en page(s) : pp 104 - 111 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse d'image numérique [Termes IGN] bati [Termes IGN] données localisées 3D [Termes IGN] généralisation de base de données [Termes IGN] modèle 3D de l'espace urbain [Termes IGN] morphologie mathématique [Termes IGN] reconnaissance d'objets [Termes IGN] reconnaissance de formes [Termes IGN] redressement d'image [Termes IGN] représentation multiple [Vedettes matières IGN] Généralisation Résumé : (Auteur) In image analysis, scale-space theory is used, e.g., for object recognition. A scale-space is obtained by deriving coarser representations at different scales from an image. With it, the behaviour of image features over scales can be analysed. One example of a scale-space is the reaction-diffusion-space, a combination of linear scale-space and mathematical morphology. As scale-spaces have an inherent abstraction capability, they are used here for the development of an automatic generalization procedure for three-dimensional (3D) building models. It can be used to generate level of detail (LOD) representations of 3D city models. Practically, it works by moving parallel facets towards each other until a 3D feature under a certain extent is eliminated or a gap is closed. As not all building structures consist of perpendicular facets, means for a squaring of non-orthogonal structures are given. Results for generalization and squaring are shown and remaining problems are discussed. Copyright ISPRS Numéro de notice : A2007-258 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2007.01.002 En ligne : https://doi.org/10.1016/j.isprsjprs.2007.01.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28621 [article]

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