Descripteur
Documents disponibles dans cette catégorie (65)
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]3D building reconstruction from ALS data using unambiguous decomposition into elementary structures / Malgorzata Jarząbek-Rychard in ISPRS Journal of photogrammetry and remote sensing, vol 118 (August 2016)
[article]
Titre : 3D building reconstruction from ALS data using unambiguous decomposition into elementary structures Type de document : Article/Communication Auteurs : Malgorzata Jarząbek-Rychard, Auteur ; Andrzej Borkowski, Auteur Année de publication : 2016 Article en page(s) : pp 1 – 12 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] interprétation automatique
[Termes IGN] modèle logique de données
[Termes IGN] modèle topologique de données
[Termes IGN] niveau de détail
[Termes IGN] semis de points
[Termes IGN] télémétrie laser aéroportéRésumé : (auteur) The objective of the paper is to develop an automated method that enables for the recognition and semantic interpretation of topological building structures. The novelty of the proposed modeling approach is an unambiguous decomposition of complex objects into predefined simple parametric structures, resulting in the reconstruction of one topological unit without independent overlapping elements. The aim of a data processing chain is to generate complete polyhedral models at LOD2 with an explicit topological structure and semantic information. The algorithms are performed on 3D point clouds acquired by airborne laser scanning. The presented methodology combines data-based information reflected in an attributed roof topology graph with common knowledge about buildings stored in a library of elementary structures. In order to achieve an appropriate balance between reconstruction precision and visualization aspects, the implemented library contains a set of structure-depended soft modeling rules instead of strictly defined geometric primitives. The proposed modeling algorithm starts with roof plane extraction performed by the segmentation of building point clouds, followed by topology identification and recognition of predefined structures. We evaluate the performance of the novel procedure by the analysis of the modeling accuracy and the degree of modeling detail. The assessment according to the validation methods standardized by the International Society for Photogrammetry and Remote Sensing shows that the completeness of the algorithm is above 80%, whereas the correctness exceeds 98%. Numéro de notice : A2016-587 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2016.04.005 En ligne : http://dx.doi.org/10.1016/j.isprsjprs.2016.04.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81731
in ISPRS Journal of photogrammetry and remote sensing > vol 118 (August 2016) . - pp 1 – 12[article]Automatic conversion of IFC datasets to geometrically and semantically correct CityGML LOD3 buildings / Sjors Donkers in Transactions in GIS, vol 20 n° 4 (August 2016)
[article]
Titre : Automatic conversion of IFC datasets to geometrically and semantically correct CityGML LOD3 buildings Type de document : Article/Communication Auteurs : Sjors Donkers, Auteur ; Hugo Ledoux, Auteur ; Junqiao Zhao, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2016 Article en page(s) : pp 547 - 569 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] généralisation sémantique
[Termes IGN] niveau de détail
[Termes IGN] système d'information géographiqueRésumé : (auteur) Although the international standard CityGML has five levels of detail (LODs), the vast majority of available models are the coarse ones (up to LOD2, i.e. block-shaped buildings with roofs). LOD3 and LOD4 models, which contain architectural details such as balconies, windows and rooms, rarely exist because, unlike coarser LODs, their construction requires several datasets that must be acquired with different technologies, and often extensive manual work is needed. In this article we investigate an alternative to obtaining CityGML LOD3 models: the automatic conversion from already existing architectural models (stored in the IFC format). Existing conversion algorithms mostly focus on the semantic mappings and convert all the geometries, which yields CityGML models having poor usability in practice (spatial analysis, for instance, is not possible). We present a conversion algorithm that accurately applies the correct semantics from IFC models and that constructs valid CityGML LOD3 buildings by performing a series of geometric operations in 3D. We have implemented our algorithm and we demonstrate its effectiveness with several real-world datasets. We also propose specific improvements to both standards to foster their integration in the future. Numéro de notice : A2016-993 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12162 En ligne : http://dx.doi.org/10.1111/tgis.12162 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83768
in Transactions in GIS > vol 20 n° 4 (August 2016) . - pp 547 - 569[article]Bim, géomètres et modélisation 3D / Julien Colombe in Géomatique expert, n° 111 (juillet- août 2016)
[article]
Titre : Bim, géomètres et modélisation 3D Type de document : Article/Communication Auteurs : Julien Colombe, Auteur Année de publication : 2016 Article en page(s) : pp 38 - 54 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse de l'existant
[Termes IGN] maquette numérique
[Termes IGN] modélisation 3D du bâti BIM
[Termes IGN] niveau de détail
[Termes IGN] rendu réaliste
[Termes IGN] stockage de donnéesRésumé : (auteur) Quel rôle le géomètre-expert peut-il jouer tout au long du processus BIM ? Cette question sera au centre du prochain congrès de l'ordre à Nancy. D'ores et déjà, une étude du cabinet lyonnais Arpenteurs permet de répondre à certaines interrogations,et, par l'étude d'un cas concret, identifier certains pièges dans la constitution d'une maquette numérique "telle que construit". Numéro de notice : A2016-488 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81505
in Géomatique expert > n° 111 (juillet- août 2016) . - pp 38 - 54[article]Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 265-2016041 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P001868 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt The variants of an LOD of a 3D building model and their influence on spatial analyses / Filip Biljecki in ISPRS Journal of photogrammetry and remote sensing, vol 116 (June 2016)PermalinkDie Fortführung des 3D-Gebäudemodells LoD2 in Nordrhein-Westfalen / Marco Oestereich in ZFV, Zeitschrift für Geodäsie, Geoinformation und Landmanagement, Vol 141 n° 3 (Mai - Juni 2016)PermalinkModellbasierte Transformation von 3D-Gebäudemodellen nach INSPIRE / Klement Aringer in ZFV, Zeitschrift für Geodäsie, Geoinformation und Landmanagement, Vol 141 n° 3 (Mai - Juni 2016)PermalinkPermalinkAutomatically enhancing CityGML LOD2 models with a corresponding indoor geometry / Roeland Boeters in International journal of geographical information science IJGIS, vol 29 n° 12 (December 2015)PermalinkSymbolisation et généralisation de données de réseau à différentes échelles / Ha Pham in Cartes & Géomatique, n° 226 (décembre 2015)PermalinkIntegrating space, time, version, and scale using Alexandrov topologies / Norbert Paul in International journal of 3-D information modeling, vol 4 n° 4 (October - December 2015)PermalinkEstimation of geographical databases capture scale based on inter-vertices distances exploration / Jean-François Girres in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)PermalinkAutomatic transformation of different levels of detail in 3D GIS city models in CityGML / Yichuan Deng in International journal of 3-D information modeling, vol 4 n° 3 (July - September 2015)PermalinkSymbolization and generalization to map water pipe data flow and water quality at different scales / Anne Ruas in Cartographic journal (the), Vol 52 n° 2 (May 2015)PermalinkObject selection in map generalization using geosocial network data: A case study in Wuhan, China / Hao Luo in Geomatica, vol 69 n° 1 (March 2015)PermalinkPermalinkOpenStreetMap in GIScience : experiences, research, and applications. Inferring the Scale of OpenStreetMap Features / Guillaume Touya (2015)PermalinkPrise en compte des dépendances entre données thématiques utilisateur et données topographiques lors d’un changement de niveau de détail / Kusay Jaara (2015)PermalinkVisual accceptance of library-generated CityGML LOD3 building models / Ryan Garnett in Cartographica, vol 49 n° 4 (Winter 2014)PermalinkA Pattern-based approach for matching nodes in heterogeneous urban road networks / Yang Bisheng in Transactions in GIS, vol 18 n° 5 (October 2014)PermalinkChange detection in high-resolution land use/land cover geodatabases (at object level) / Emilio Domenech (01/04/2014)PermalinkPermalinkPermalinkPermalink