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Creating large-scale city models from 3D-Point clouds : a robust approach with hybrid representation / Florent Lafarge in International journal of computer vision, vol 99 n° 1 (August 2012)
[article]
Titre : Creating large-scale city models from 3D-Point clouds : a robust approach with hybrid representation Type de document : Article/Communication Auteurs : Florent Lafarge, Auteur ; Clément Mallet , Auteur Année de publication : 2012 Article en page(s) : pp 69 - 85 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] champ aléatoire de Markov
[Termes IGN] détection d'objet
[Termes IGN] données localisées 3D
[Termes IGN] méthode de réduction d'énergie
[Termes IGN] méthode robuste
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique d'objet
[Termes IGN] scène urbaine
[Termes IGN] semis de pointsRésumé : (Auteur) We present a novel and robust method for modeling cities from 3D-point data. Our algorithm provides a more complete description than existing approaches by reconstructing simultaneously buildings, trees and topologically complex grounds. A major contribution of our work is the original way of modeling buildings which guarantees a high generalization level while having semantized and compact representations. Geometric 3D-primitives such as planes, cylinders, spheres or cones describe regular roof sections, and are combined with mesh-patches that represent irregular roof components. The various urban components interact through a non-convex energy minimization problem in which they are propagated under arrangement constraints over a planimetric map. Our approach is experimentally validated on complex buildings and large urban scenes of millions of points, and is compared to state-of-the-art methods. Numéro de notice : A2012-731 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s11263-012-0517-8 Date de publication en ligne : 29/02/2012 En ligne : https://doi.org/10.1007/s11263-012-0517-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91109
in International journal of computer vision > vol 99 n° 1 (August 2012) . - pp 69 - 85[article]CityGML - Interoperable semantic 3D city models / G. Groger in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)
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Titre : CityGML - Interoperable semantic 3D city models Type de document : Article/Communication Auteurs : G. Groger, Auteur ; L. Plumer, Auteur Année de publication : 2012 Article en page(s) : pp 12 - 33 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] CityGML
[Termes IGN] données localisées 3D
[Termes IGN] INSPIRE
[Termes IGN] interopérabilité
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] standard OGCRésumé : (Auteur) CityGML is the international standard of the Open Geospatial Consortium (OGC) for the representation and exchange of 3D city models. It defines the three-dimensional geometry, topology, semantics and appearance of the most relevant topographic objects in urban or regional contexts. These definitions are provided in different, well-defined Levels-of-Detail (multiresolution model). The focus of CityGML is on the semantical aspects of 3D city models, its structures, taxonomies and aggregations, allowing users to employ virtual 3D city models for advanced analysis and visualization tasks in a variety of application domains such as urban planning, indoor/outdoor pedestrian navigation, environmental simulations, cultural heritage, or facility management. This is in contrast to purely geometrical/graphical models such as KML, VRML, or X3D, which do not provide sufficient semantics. CityGML is based on the Geography Markup Language (GML), which provides a standardized geometry model. Due to this model and its well-defined semantics and structures, CityGML facilitates interoperable data exchange in the context of geo web services and spatial data infrastructures. Since its standardization in 2008, CityGML has become used on a worldwide scale: tools from notable companies in the geospatial field provide CityGML interfaces. Many applications and projects use this standard. CityGML is also having a strong impact on science: numerous approaches use CityGML, particularly its semantics, for disaster management, emergency responses, or energy-related applications as well as for visualizations, or they contribute to CityGML, improving its consistency and validity, or use CityGML, particularly its different Levels-of-Detail, as a source or target for generalizations. This paper gives an overview of CityGML, its underlying concepts, its Levels-of-Detail, how to extend it, its applications, its likely future development, and the role it plays in scientific research. Furthermore, its relationship to other standards from the fields of computer graphics and computer-aided architectural design and to the prospective INSPIRE model are discussed, as well as the impact CityGML has and is having on the software industry, on applications of 3D city models, and on science generally. Numéro de notice : A2012-345 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.04.004 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.04.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31791
in ISPRS Journal of photogrammetry and remote sensing > vol 71 (July 2012) . - pp 12 - 33[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012051 SL Revue Centre de documentation Revues en salle Disponible Creating 3D models of major cities, improving speed and cost-efficiency / A. Yakubenko in GIM international, vol 26 n° 7 (July 2012)
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Titre : Creating 3D models of major cities, improving speed and cost-efficiency Type de document : Article/Communication Auteurs : A. Yakubenko, Auteur ; A. Velizhev, Auteur ; V. Shemarov, Auteur Année de publication : 2012 Article en page(s) : pp 24 - 27 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] bâtiment
[Termes IGN] coût
[Termes IGN] façade
[Termes IGN] image terrestre
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] Moscou
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] texture d'imageRésumé : (Editeur) Surprisingly, the idea of a web-based 3D map of Moscow came to a Russian real estate developer in a dream in early 2001. Since the quality of airborne data was insufficient to create photorealistic 3D models, terrestrial imagery would be used - and with Russia's capital city featuring more than 150,000 buildings, the project was ambitious to say the least. This article describes the team's approach to surveying such a complex city environment and the new techniques developed for producing photorealistic 3D models of buildings quickly and cost-efficiently. Numéro de notice : A2012-317 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31763
in GIM international > vol 26 n° 7 (July 2012) . - pp 24 - 27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-2012071 SL Revue Centre de documentation Revues en salle Disponible Le mobilier urbain 3D de la ville de Genève / X. Ravinet in Géomatique expert, n° 87 (01/07/2012)
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Titre : Le mobilier urbain 3D de la ville de Genève Type de document : Article/Communication Auteurs : X. Ravinet, Auteur ; C. Brulhart, Auteur ; Laurent Niggeler, Auteur Année de publication : 2012 Article en page(s) : pp 52 - 56 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] Genève
[Termes IGN] gestion urbaine
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] SIG 3D
[Termes IGN] système d'information urbainRésumé : (Auteur) [introduction] Le mobilier urbain est un élément important des territoires urbains numériques 3D. Ils font partie du décor et de nos lieux de vies et sont indispensables pour une correcte acceptation de la scène virtuelle et compréhension du territoire modélisé. C'est donc la suite logique du développement du socle 3D de Genève constitué des bâtiments, de la végétation et des infrastructures de communication. Soucieuse de mettre à disposition des données fiables, mises à jour, mais aussi complètes, l'administration genevoise porte aujourd'hui son attention sur le mobilier urbain en collaboration avec la ville de Genève. Numéro de notice : A2012-330 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31776
in Géomatique expert > n° 87 (01/07/2012) . - pp 52 - 56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 265-2012041 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P001351 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt A geometry and texture coupled flexible generalization of urban building models / M. Zhang in ISPRS Journal of photogrammetry and remote sensing, vol 70 (June 2012)
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Titre : A geometry and texture coupled flexible generalization of urban building models Type de document : Article/Communication Auteurs : M. Zhang, Auteur ; L. Zhang, Auteur ; P. Takis, Auteur ; P. Takis Mathiopoulos, Auteur ; W. Xie, Auteur ; Y. Ding, Auteur ; H. Wang, Auteur Année de publication : 2012 Article en page(s) : pp 1 - 24 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] attribut géomètrique
[Termes IGN] CityGML
[Termes IGN] données localisées 3D
[Termes IGN] façade
[Termes IGN] généralisation du bâti
[Termes IGN] instance
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique du bâti
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] réalité virtuelle
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] texture d'image
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) In the past, numerous research efforts have focused on generalization of city building models. However, a generic procedure for creating flexible generalization results supporting the fast and efficient update of original building models with various complexities is still an open problem. Moreover, building clusters created in previously published generalization methods are not flexible enough to meet the various requirements for both legible and realistic visualization. Motivated by these observations, this paper proposes a new method for generating a flexible generalization outcome which enables convenient updating of original building models. It also proposes a flexible preprocessing of this generalized information to render a legible and realistic urban scene. This is accomplished by introducing a novel component structure, termed as FEdge, particularly designed for efficiently managing the geometry and texture information in building cluster instances (both original building models and building clusters) during the generalization, visualization and updating processes. Furthermore, a multiple representation structure, referred to as Evolved Buffer-Tree (EBT), is also introduced. The purpose of the EBT is to organize building cluster instances and to employ more flexible LODs for both legible and realistic visualization of urban scenes. FEdge has an intuitive planar shape which can be effectively used in representing rough 3D facade composed by detailed continuous meshes. Each FEdge is given a unique identifier, referred to as FEdge Index. In the proposed generalization scheme, firstly each original building model treated as a building cluster instance is abstracted and presented as FEdge Indices. These FEdge Indices are then used for producing generalized building cluster instances in the EBT portably, and to support convenient model updating and flexible preprocessing of the generalization results for renderable building cluster instances. Secondly, to achieve a legible and realistic visualization of urban scene, the EBT is flexibly assigned diverse LODs maintaining more important legible information than LODs defined in CityGML for 3D building models. To make the generalization more accurate by considering the city roads and districts, an algorithm for automatic road analysis is applied in our clustering and combination. Numerous experiments considering the geometrical and textural complexity of common urban building models, as well as a typical case study of complex city scene with a large number of building models, verify the effectiveness of our generalization method and the dynamic visualization of the generalized urban models. Numéro de notice : A2012-285 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.03.008 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.03.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31731
in ISPRS Journal of photogrammetry and remote sensing > vol 70 (June 2012) . - pp 1 - 24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012041 SL Revue Centre de documentation Revues en salle Disponible Quality assessment of geometric façade models reconstructed from TLS data / Tania Landes in Photogrammetric record, vol 27 n° 138 (June - August 2012)PermalinkDes données 3D pour les architectes, urbanistes et paysagistes sur le Canton de Genève / C. Minery in Géomatique suisse, vol 110 n° 5 (01/05/2012)PermalinkAutomatic classification of building types in 3D city models: Using SVMs for semantic enrichment of low resolution building data / A. Henn in Geoinformatica, vol 16 n° 2 (April 2012)PermalinkUAV flight over Singapore: a pilot study / Armin W. Gruen in Geoinformatics, vol 15 n° 3 (01/04/2012)PermalinkLa mensuration officielle suisse 1912-2012 / Fridolin Wicki (2012)PermalinkModélisation urbaine : de la représentation au projet. Interopérabilité et intégration des données et modèles urbains : standards, normes et tendances pour les SIG / Emmanuel Devys (2012)PermalinkProvably correct and complete transaction rules for updating 3D city models / G. Groger in Geoinformatica, vol 16 n° 1 (January 2012)PermalinkSpatial relations and properties for semantically enhanced 3D city models / Bénédicte Bucher (2012)PermalinkLa modélisation 3D : une nouvelle voie pour les documents d'urbanisme : Application à l'optimisation énergétique des bâtiments / Aurélie Prévost in Revue internationale de géomatique, vol 21 n° 4 (décembre 2011 – février 2012)Permalink3D simulation in the cloud / K. Shibata in GEO: Geoconnexion international, vol 10 n° 10 (november – december 2011)Permalink