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Usage, Usability, and Utility of 3D City Models – European COST Action TU0801 29/10/2012 31/10/2012 Nantes France OA proceedings
nom du congrès :
Usage, Usability, and Utility of 3D City Models – European COST Action TU0801
début du congrès :
29/10/2012
fin du congrès :
31/10/2012
ville du congrès :
Nantes
pays du congrès :
France
site des actes du congrès :
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Affiner la recherche Interroger des sources externesMeasuring the impact of 3D data geometric modeling on spatial analysis : illustration with Skyview factor / Mickaël Brasebin (2012)
Titre : Measuring the impact of 3D data geometric modeling on spatial analysis : illustration with Skyview factor Type de document : Article/Communication Auteurs : Mickaël Brasebin Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2012 Conférence : Usage, Usability, and Utility of 3D City Models – European COST Action TU0801 29/10/2012 31/10/2012 Nantes France OA proceedings Importance : 18 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] analyse spatiale
[Termes IGN] BD Topo
[Termes IGN] données localisées 3D
[Termes IGN] modèle géométrique
[Termes IGN] scène urbaineRésumé : (auteur) The increased availability of 3D urban data reflects a growing interest in 3D spatial analysis. As 3D spatial analysis often uses complex 3D data, studies of the po- tential gains of using more detailed 3D urban databases for specific uses is an important issue. First, more complex data implies an increase in time and memory usage for the analysis (and calls for more research on the efficiency of the algorithms used). Second, detailed 3D urban data are complex to produce, expensive and it is important to be well informed in order to decide whether of not to invest in such data. Currently, many studies have been led about the fitness for use of 2D data but they are very scarce concerning 3D data. This article presents a method to determine the influence of 3D modeling on the results of 3D analysis by isolating the potential sources of errors (such as roof modeling and geometric accuracy). This method is applied on two 3D datasets (LOD1 and LOD2) and a 3D indicator (the sky view factor or SVF). The results show that the significant influence of roof modeling is globally compensated by the difference in geometric modeling but that important local variations are noticed. Nevertheless, for 75% of the SVF processed the difference between the results using these two databases is lower than 2% Numéro de notice : C2012-031 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : 10.1051/3u3d/201202001 En ligne : https://doi.org/10.1051/3u3d/201202001 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101227
