Descripteur
Termes IGN > informatique > modélisation 3D > modèle 3D de l'espace urbain
modèle 3D de l'espace urbain |
Documents disponibles dans cette catégorie (216)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
An improved LOD specification for 3D building models / Filip Biljecki in Computers, Environment and Urban Systems, vol 59 (September 2016)
[article]
Titre : An improved LOD specification for 3D building models Type de document : Article/Communication Auteurs : Filip Biljecki, Auteur ; Hugo Ledoux, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2016 Article en page(s) : pp 25 - 37 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] CityGML
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modélisation 3D du bâti BIM
[Termes IGN] niveau de détail
[Termes IGN] représentation multiple
[Termes IGN] SIG 3DRésumé : (auteur) The level of detail (LOD) concept of the OGC standard CityGML 2.0 is intended to differentiate multi-scale representations of semantic 3D city models. The concept is in practice principally used to indicate the geometric detail of a model, primarily of buildings. Despite the popularity and the general acceptance of this categorisation, we argue in this paper that from a geometric point of view the five LODs are insufficient and that their specification is ambiguous.
We solve these shortcomings with a better definition of LODs and their refinement. Hereby we present a refined set of 16 LODs focused on the grade of the exterior geometry of buildings, which provide a stricter specification and allow less modelling freedom. This series is a result of an exhaustive research into currently available 3D city models, production workflows, and capabilities of acquisition techniques. Our specification also includes two hybrid models that reflect common acquisition practices. The new LODs are in line with the LODs of CityGML 2.0, and are intended to supplement, rather than replace the geometric part of the current specification. While in our paper we focus on the geometric aspect of the models, our specification is compatible with different levels of semantic granularity. Furthermore, the improved LODs can be considered format-agnostic.
Among other benefits, the refined specification could be useful for companies for a better definition of their product portfolios, and for researchers to specify data requirements when presenting use cases of 3D city models. We support our refined LODs with experiments, proving their uniqueness by showing that each yields a different result in a 3D spatial operation.Numéro de notice : A2016-406 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.compenvurbsys.2016.04.005 Date de publication en ligne : 12/05/2016 En ligne : http://dx.doi.org/10.1016/j.compenvurbsys.2016.04.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81230
in Computers, Environment and Urban Systems > vol 59 (September 2016) . - pp 25 - 37[article]A two-level topological model for 3D features in CityGML / Lin Li in Computers, Environment and Urban Systems, vol 59 (September 2016)
[article]
Titre : A two-level topological model for 3D features in CityGML Type de document : Article/Communication Auteurs : Lin Li, Auteur ; Feng Luo, Auteur ; Haihong Zhu, Auteur ; Shen Ying, Auteur ; Zhigang Zhao, Auteur Année de publication : 2016 Article en page(s) : pp 11- 24 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] CityGML
[Termes IGN] contrainte de cohérence
[Termes IGN] intégrité topologique
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle topologique de données
[Termes IGN] niveau de détail
[Termes IGN] objet géographique 3D
[Termes IGN] primitive géométrique
[Termes IGN] relation topologique
[Termes IGN] relation topologique 3D
[Termes IGN] SIG 3DRésumé : (auteur) CityGML, as the standard for the representation and exchange of 3D city models, contains rich information in terms of geometry, semantics, topology and appearance. With respect to topology, CityGML adopts the XLink approach to represent topological relationships between different geometric aggregates or thematic features; however, it is limited to shared objects. This paper proposes a two-level model for representing 3D topological relationships in CityGML: high-level (semantic-level) topology between semantic features and low-level (geometric-level) topology between geometric primitives. Five topological relationships are adopted in this model: touch, in, equal, overlap and disjoint. The semantic-level topology is derived from the geometric-level topology on the basis of the shared geometric primitives. To maintain the 3D topology, topological consistency rules are presented. An Application Domain Extension, called TopoADE, is proposed for the implementation of the topological model. The TopoADE consists of three modules: Topology, Feature and Geometry. Finally, 3D city models with LoD1 to LoD4 are used to test this model. Experimentation on those data sets indicates a validation of the proposed topological model in CityGML. Numéro de notice : A2016-405 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.compenvurbsys.2016.04.007 Date de publication en ligne : 12/05/2016 En ligne : http://dx.doi.org/10.1016/j.compenvurbsys.2016.04.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81228
in Computers, Environment and Urban Systems > vol 59 (September 2016) . - pp 11- 24[article]Une nouvelle orientation pour l'enseignement ? / Anonyme in Géomètre, n° 2137 (juin 2016)
[article]
Titre : Une nouvelle orientation pour l'enseignement ? Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2016 Article en page(s) : pp 42 - 42 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie
[Termes IGN] acquisition de données
[Termes IGN] appariement d'images
[Termes IGN] drone
[Termes IGN] formation
[Termes IGN] logiciel de photogrammétrie
[Termes IGN] modèle 3D de l'espace urbainRésumé : (Auteur) Ce n'est pas toujours expliqué clairement, mais les nouvelles technologies d'acquisition des données font une référence constante à la photogrammétrie. Numéro de notice : A2016-370 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81136
in Géomètre > n° 2137 (juin 2016) . - pp 42 - 42[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 036-2016061 RAB Revue Centre de documentation En réserve L003 Disponible Peut-on contrôler la qualité d'un modèle 3D sans points de contrôle ? / Anonyme in Géomètre, n° 2137 (juin 2016)
[article]
Titre : Peut-on contrôler la qualité d'un modèle 3D sans points de contrôle ? Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2016 Article en page(s) : pp 40 - 40 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie
[Termes IGN] contrôle qualité
[Termes IGN] écart type
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] précision absolue
[Termes IGN] qualité des donnéesNuméro de notice : A2016-369 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81135
in Géomètre > n° 2137 (juin 2016) . - pp 40 - 40[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 036-2016061 RAB Revue Centre de documentation En réserve L003 Disponible Energy planning tools and CityGML-based 3D virtual city models: experiences from Trento (Italy) / Giorgio Agugiaro in Applied geomatics, vol 8 n° 1 (March 2016)
[article]
Titre : Energy planning tools and CityGML-based 3D virtual city models: experiences from Trento (Italy) Type de document : Article/Communication Auteurs : Giorgio Agugiaro, Auteur Année de publication : 2016 Article en page(s) : pp 41 - 56 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bâtiment
[Termes IGN] caractérisation
[Termes IGN] CityGML
[Termes IGN] consommation
[Termes IGN] intégration de données
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] outil d'aide à la décision
[Termes IGN] performance énergétique
[Termes IGN] Trente
[Vedettes matières IGN] GéovisualisationRésumé : (Auteur) This article presents the first results concerning the development and implementation of a tool for the estimation of the energy performance for residential buildings at city scale. Space heating and domestic hot water production are taken into account. Project “EnerCity” focuses on two main topics: (a) the creation of a CityGML-compliant 3D city model from sub-optimal datasets and (b) its adoption as information hub to develop energy-related assessment tools. A part of the city of Trento, in northern Italy, was chosen as the case study area for testing purposes; however, the methodology was developed to be extended to the whole city. Only publicly available data were used. The energy demand calculation method is based on the Italian Technical Specifications UNI/TS 11300:2008. For each building, the primary energy demand for space heating and domestic hot water production, as well as the resulting energy performance index, are estimated. In order to characterise the buildings, heterogeneous datasets (cadastral data, statistical data, etc.) were harmonised and integrated. All residential buildings were successively classified into distinct building types according to the criteria defined for Italy in the European project “Tabula”. The developed tool allows for data visualisation, editing as well as interactive refurbishment of the buildings. The article describes all relevant steps of the project and discusses possible enhancements and the future improvements. Numéro de notice : A2016--057 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s12518-015-0163-2 En ligne : http://dx.doi.org/10.1007/s12518-015-0163-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84205
in Applied geomatics > vol 8 n° 1 (March 2016) . - pp 41 - 56[article]Modellbasierte Transformation von 3D-Gebäudemodellen nach INSPIRE / Klement Aringer in ZFV, Zeitschrift für Geodäsie, Geoinformation und Landmanagement, Vol 141 n° 3 (Mai - Juni 2016)PermalinkLandmark based localization: LBA refinement using MCMC-optimized projections of RJMCMC-extracted road marks / Bahman Soheilian (2016)PermalinkPermalinkProgressive streaming and massive rendering of 3D city models on web-based virtual globe / Quoc-Dinh Nguyen (2016)PermalinkBuilding cities using UAV / Martin Schwall in Geoinformatics, vol 18 n° 8 (December 2015)PermalinkSetting the standard in city digitalisation / Marie-Caroline Rondeau in Geoinformatics, vol 18 n° 8 (December 2015)PermalinkAutomatic registration of optical aerial imagery to a LiDAR point cloud for generation of city models / Bernard O. Abayowa in ISPRS Journal of photogrammetry and remote sensing, vol 106 (August 2015)PermalinkOblique aerial image acquisition, 3D city modeling, 3D city guide project for Konya metropolitan municipality / Tuncer Ozerbil in International journal of 3-D information modeling, vol 4 n° 2 (April - June 2015)PermalinkPersistent scatterers at building facades – Evaluation of appearance and localization accuracy / Stefan Gernhardt in ISPRS Journal of photogrammetry and remote sensing, vol 100 (February 2015)PermalinkPermalink