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NIBU: An integrated framework for representing the relation among building structure and interior utilities in micro-scale environment / Ihab Hijazi in Geo-spatial Information Science, vol 14 n° 2 (01/06/2011)
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Titre : NIBU: An integrated framework for representing the relation among building structure and interior utilities in micro-scale environment Type de document : Article/Communication Auteurs : Ihab Hijazi, Auteur ; Sisi Zlatanova, Auteur ; Manfred Ehlers, Auteur Année de publication : 2011 Article en page(s) : pp 98 - 108 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] graphe
[Termes IGN] jointure spatiale
[Termes IGN] modèle conceptuel de données
[Termes IGN] modèle numérique du bâti
[Termes IGN] réseau technique urbain
[Termes IGN] UMLRésumé : (Auteur) This paper describes a framework for modeling interdependencies between different network systems and building structures. It provides an approach for the integrated analysis of interior building utilities by describing a framework to model and simulate infrastructure interdependencies and their complex behaviors. It is a graph-based spatial model that can support use cases such as providing the location and specifications of interior utilities to a technician who wants to perform a maintenance operation. This location could be needed for maintenance or replacement, or to investigate the result of damage to the building structure on another utility network, or to estimate the effect of different maintenance operations in different locations along utilities service systems. The model accounts for two important aspects: first, the relationship between interior utilities and building elements or spaces and second, the building hierarchy structure to which the utilities network is related. A proper hierarchy of the building is developed which supports the generation of human-oriented descriptions of interior utilities, where a method for partitions of large building element and spaces as well as a method to reference a network element to another building are developed. The connection of the different utilities network systems and buildings are generated using joints, which are based on a containment relation. An example is presented which shows the effectiveness of this approach for supporting maintenance operations, as well as the independences between the maintenance operation location and the other network systems. The paper presents the data model and explains the links with current 3D building model standards. Numéro de notice : A2011-621 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1007/s11806-011-0461-8 Date de publication en ligne : 14/08/2012 En ligne : https://doi.org/10.1007/s11806-011-0461-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33594
in Geo-spatial Information Science > vol 14 n° 2 (01/06/2011) . - pp 98 - 108[article]Precise orthoimage generation of Dunhuang wall painting / Y. Zhang in Photogrammetric Engineering & Remote Sensing, PERS, vol 77 n° 6 (June 2011)
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Titre : Precise orthoimage generation of Dunhuang wall painting Type de document : Article/Communication Auteurs : Y. Zhang, Auteur ; Z. Zhang, Auteur ; M. Sun, Auteur ; T. Ke, Auteur Année de publication : 2011 Article en page(s) : pp 631 - 640 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Orthophotographie, orthoimage
[Termes IGN] acquisition d'images
[Termes IGN] appariement d'images
[Termes IGN] compensation par faisceaux
[Termes IGN] diagramme de Voronoï
[Termes IGN] grotte
[Termes IGN] Kansou (Chine)
[Termes IGN] orientation relative
[Termes IGN] orthoimage couleur
[Termes IGN] peinture
[Termes IGN] photogrammétrie terrestre
[Termes IGN] précision millimétriqueRésumé : (Auteur) Wall painting plays an important role in the culture relics of the Mogao Caves in Dunhuang, P.R. China. A novel approach of generating a high-resolution orthoimage of the wall painting is proposed. Since the photographic object is nearly flat and also the forward overlap between adjacent images is smaller than 60 percent, the main difficulty to be resolved is the high correlation problem among the unknowns. Improved models of relative orientation and bundle adjustment with virtual constraints have been developed to resolve the high correlation problem. A Voronoi diagram of projective footprints is applied to automatically determine the mosaic lines of ortho-rectified images. The color quality of the generated orthoimage is improved through global minimization of the color differences among overlapped images. The experimental results show that the proposed approach has great potential for conservation of wall paintings with sub-millimeter to millimeter precision. Numéro de notice : A2011-257 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.77.6.631 En ligne : https://doi.org/10.14358/PERS.77.6.631 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31035
in Photogrammetric Engineering & Remote Sensing, PERS > vol 77 n° 6 (June 2011) . - pp 631 - 640[article]How many 3D city models are there? A typological try / M. Jahnke in Cartographic journal (the), vol 48 n° 2 (May 2011)
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Titre : How many 3D city models are there? A typological try Type de document : Article/Communication Auteurs : M. Jahnke, Auteur ; Jukka Mathias Krisp, Auteur ; H. Kumke, Auteur Année de publication : 2011 Conférence : ICC 2011, 25th International Cartographic Conference and 15th ICA General Assembly 03/07/2011 08/07/2011 Paris France OA Proceedings Article en page(s) : pp 124 - 130 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] capacité de stockage
[Termes IGN] densité d'information
[Termes IGN] information sémantique
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] niveau d'abstraction
[Termes IGN] qualité des données
[Termes IGN] segmentation d'image
[Termes IGN] texturage
[Termes IGN] topologie
[Termes IGN] visualisation 3DRésumé : (Auteur) Three-dimensional (3D) city models are intended to represent the geometry along with the appearance of the reality. In some cases, photos are precisely mapped as texture onto the geometric model, which then renders a realistic impression of the underlying environment. In other cases, the models are visualized in a more abstract way. This paper is dedicated to investigating the relation of level of abstraction, information density and storage capacity for the representation of a 3D city model. Increasing the level of abstraction usually leads to the decrease of information density to be processed. Accordingly, the general storage capacity will decrease as well. Since a higher level of abstraction is less bound to photorealistic aspects, it may allow further semantic information to be accommodated in the visualisation process. If the level of abstraction in a city model increases in a well-controlled way so that the characteristic features are enhanced while non-relevant information is inhibited, the user’s cognitive load during task completion may be reduced. This implies an increased efficiency of information communication. Using image segmentation algorithms, the elements within a facade per unit of area are successively reduced while preserving the characteristic structures within the image. The segmented image holds the sufficient information to be recognized in the environment. We treat the three concepts, level of abstraction, information density and storage capacity, as fundamental variables for the visualisation of building facades. To deal with these concepts, we organizing them on a continuum, which enables us to find a tradeoff between a potential loss of information and the level of usage for various tasks. Numéro de notice : A2011-263 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277411Y.0000000010 Date de publication en ligne : 22/11/2013 En ligne : https://doi.org/10.1179/1743277411Y.0000000010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31041
in Cartographic journal (the) > vol 48 n° 2 (May 2011) . - pp 124 - 130[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2011021 RAB Revue Centre de documentation En réserve L003 Disponible Topologically consistent 3D city models obtained by extrusion / Hugo Ledoux in International journal of geographical information science IJGIS, vol 25 n° 4-5 (May 2011)
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Titre : Topologically consistent 3D city models obtained by extrusion Type de document : Article/Communication Auteurs : Hugo Ledoux, Auteur ; Martijn Meijers, Auteur Année de publication : 2011 Article en page(s) : pp 557 - 574 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] CityGML
[Termes IGN] intégrité topologique
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] programmation par contraintes
[Termes IGN] Triangulated Irregular Network
[Termes IGN] triangulation de DelaunayRésumé : Auteur) One of the simplest methods to construct a 3D city model is to extrude building footprints to obtain “block-shaped" polyhedra representing buildings. While the method is well-known and easy to implement, if the 2D topological relationships between the footprints are not taken into account, the resulting 3D city models will not necessarily be topologically consistent (i.e. primitives shared by 3D buildings will be duplicated and/or intersect each others). As a result, the model will be of little use for most applications, besides visualisation that is. In this paper, we present a new extrusion procedure to construct topologically correct 3D city models. It is based on the use of a constrained triangulation, is conceptually simple, and offers great flexibility to create city models in different formats (e.g. CityGML or a surface-based representation). We have implemented the procedure, tested it with real-world datasets, and validated it. Numéro de notice : A2011-566 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658811003623277 En ligne : http://dx.doi.org/10.1080/13658811003623277 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79398
in International journal of geographical information science IJGIS > vol 25 n° 4-5 (May 2011) . - pp 557 - 574[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2011032 RAB Revue Centre de documentation En réserve L003 Disponible 079-2011031 SL Revue Centre de documentation Revues en salle Disponible Connectivity in the regular polytope representation / R. Thompson in Geoinformatica, vol 15 n° 2 (April 2011)
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Titre : Connectivity in the regular polytope representation Type de document : Article/Communication Auteurs : R. Thompson, Auteur ; Peter J. M. Van Oosterom, Auteur Année de publication : 2011 Article en page(s) : pp 223 - 246 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] algèbre de Boole
[Termes IGN] base de données localisées
[Termes IGN] connexité (graphes)
[Termes IGN] objet géographique
[Termes IGN] raisonnement spatial
[Termes IGN] relation topologique
[Termes IGN] traitement géométrique de donnéesRésumé : (Auteur) In order to be able to draw inferences about real world phenomena from a representation expressed in a digital computer, it is essential that the representation should have a rigorously correct algebraic structure. It is also desirable that the underlying algebra be familiar, and provide a close modelling of those phenomena. The fundamental problem addressed in this paper is that, since computers do not support real-number arithmetic, the algebraic behaviour of the representation may not be correct, and cannot directly model a mathematical abstraction of space based on real numbers. This paper describes a basis for the robust geometrical construction of spatial objects in computer applications using a complex called the “Regular Polytope”. In contrast to most other spatial data types, this definition supports a rigorous logic within a finite digital arithmetic. The definition of connectivity proves to be non-trivial, and alternatives are investigated. It is shown that these alternatives satisfy the relations of a region connection calculus (RCC) as used for qualitative spatial reasoning, and thus introduce the rigor of that reasoning to geographical information systems. They also form what can reasonably be termed a “Finite Boolean Connection Algebra”. The rigorous and closed nature of the algebra ensures that these primitive functions and predicates can be combined to any desired level of complexity, and thus provide a useful toolkit for data retrieval and analysis. The paper argues for a model with two and three-dimensional objects that have been coded in Java and which implement a full set of topological and connectivity functions which is shown to be complete and rigorous. Numéro de notice : A2011-088 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1007/s10707-009-0094-3 Date de publication en ligne : 20/10/2009 En ligne : https://doi.org/10.1007/s10707-009-0094-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30868
in Geoinformatica > vol 15 n° 2 (April 2011) . - pp 223 - 246[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-2011021 RAB Revue Centre de documentation En réserve L003 Disponible Modelling and analysing 3D buildings with a primal/dual data structure / P. Boguslawski in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 2 (March - April 2011)
PermalinkModelling and analysing 3D buildings with a primal/dual data structure / P. Boguslawski in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 2 (March - April 2011)
PermalinkSimultaneous & topologically-safe line simplification for a variable-scale planar partition / Martijn Meijers (31/01/2011)
PermalinkGeneralization of DEM for terrain analysis using a compound method / Q. Zhou in ISPRS Journal of photogrammetry and remote sensing, vol 66 n° 1 (January - February 2011)
PermalinkGraph-based feature selection for object-oriented classification in VHR airborne imagery / Tianen Chen in IEEE Transactions on geoscience and remote sensing, vol 49 n° 1 Tome 2 (January 2011)
PermalinkL’impact du voisinage géographique des pays dans l’attribution des votes au Concours Eurovision de la Chanson / Jean-François Gleyze in Cybergeo, European journal of geography, n° 2011 ([01/01/2011])
PermalinkArea aggregation in map generalisation by mixed-integer programming / Jan‐Henrik Haunert in International journal of geographical information science IJGIS, vol 24 n°11-12 (december 2010)
PermalinkModeling the scale dependences of topological relations between lines and regions induced by reduction of attributes / S. Du in International journal of geographical information science IJGIS, vol 24 n°11-12 (december 2010)
PermalinkRapid re-convergences to ambiguity-fixed solutions in precise point positioning / J. Geng in Journal of geodesy, vol 84 n° 12 (December 2010)
PermalinkFloodwayGIS : An ArcGIS Visualization Environment to Remodel a Floodway / S. Selvanathan in Transactions in GIS, vol 14 n° 5 (October 2010)
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