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Reconstruction of building models from maps and laser altimeter data / Uwe Stilla (14/06/1999)

Public contenu dans Integrated spatial data bases / Peggy Agouris (1999) Titre : Reconstruction of building models from maps and laser altimeter data Type de document : Article/Communication Auteurs : Uwe Stilla, Auteur ; K. Jurkiewicz, Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 14/06/1999 Conférence : ISD 1999, Integrated spatial databases 14/06/1999 16/06/1999 Portland Etats-Unis Importance : pp 34 - 46 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] détection de contours [Termes IGN] données altimétriques [Termes IGN] données vectorielles [Termes IGN] grande échelle [Termes IGN] histogramme [Termes IGN] polygone [Termes IGN] reconstruction 3D du bâti Résumé : (Auteur) In this paper we describe a procedure for generating building models from large scale vector maps and laser altimeter data. First the vector map is analyzed to group the outlines of buildings and to obtain a hierarchical description of buildings or building complexes. The base area is used to mask the elevation data of single buildings and to derive a coarse 31)-description by prismatic models. Afterwards, details of the roof are analyzed. Based on the histogram of heights, flat roofs and sloped roofs are discriminated. For reconstructing flat roofs with superstructures, peaks are searched in the histogram and used to segment the height data. Compact segments are examined for a regular shape and approximated by additional prismatic objects. For reconstructing sloped roofs, the gradient field of the elevation data is calculated and a histogram of orientations is determined. Major orientations in the histogram are detected and used to segment the elevation image. For each segment containing homogeneous orientations and slopes, a spatial plane is fitted and a 3D-contour is constructed. In order to obtain a polygonal description, adjacent planes are intersected and common vertices are calculated. Numéro de notice : C1999-055 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65821