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Compactly representing massive terrain models as TINs in CityGML / Kavisha Kumar in Transactions in GIS, vol 22 n° 5 (October 2018)  

Public [article]  inTransactions in GIS > vol 22 n° 5 (October 2018) . - pp 1152 - 1178 Titre : Compactly representing massive terrain models as TINs in CityGML Type de document : Article/Communication Auteurs : Kavisha Kumar, Auteur ; Hugo Ledoux, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2018 Article en page(s) : pp 1152 - 1178 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes descripteurs IGN] CityGML [Termes descripteurs IGN] données massives [Termes descripteurs IGN] modèle numérique de terrain [Termes descripteurs IGN] module d'extension [Termes descripteurs IGN] relation topologique [Termes descripteurs IGN] Triangulated Irregular Network [Termes descripteurs IGN] UML [Termes descripteurs IGN] XML schema Résumé : (Auteur) Terrains form an important part of 3D city models. GIS practitioners often model terrains with 2D grids. However, TINs (Triangulated Irregular networks) are also increasingly used in practice. One such example is the 3D city model of the Netherlands (3DTOP10NL), which covers the whole country as one massive triangulation with more than one billion triangles. Due to the massive size of terrain datasets, the main issue is how to efficiently store and maintain them. The international 3D GIS standard CityGML allows us to store TINs using the Simple Feature representation. However, we argue that it is not appropriate for storing massive TINs and has limitations. We focus in this article on an improved storage representation for massive terrain models as TINs. We review different data structures for compactly representing TINs and explore how they can be implemented in CityGML as an ADE (Application Domain Extension) to efficiently store massive terrains. We model our extension using UML, and XML schemas for the extension are automatically derived from these UML models. Experiments with massive real‐world terrains show that, with this approach, we can compress CityGML files up to a factor of ~20 with one billion+ triangles, and our method has the added benefit of explicitly storing the topological relationships of a TIN model. Numéro de notice : A2018-572 Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12456 date de publication en ligne : 11/10/2018 En ligne : https://doi.org/10.1111/tgis.12456 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92296 [article]

Processing BIM and GIS models in practice: Experiences and recommendations from a geoBIM project in The Netherlands / Ken Arroyo Ohori in ISPRS International journal of geo-information, vol 7 n° 8 (August 2018)  

Public [article]  inISPRS International journal of geo-information > vol 7 n° 8 (August 2018) Titre : Processing BIM and GIS models in practice: Experiences and recommendations from a geoBIM project in The Netherlands Type de document : Article/Communication Auteurs : Ken Arroyo Ohori, Auteur ; Abdoulaye A. Diakité, Auteur ; Thomas Krijnen, Auteur ; Hugo Ledoux, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2018 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes descripteurs IGN] CityGML [Termes descripteurs IGN] Industry foudation classes IFC [Termes descripteurs IGN] intégration de données [Termes descripteurs IGN] interopérabilité [Termes descripteurs IGN] modèle géométrique [Termes descripteurs IGN] modélisation 3D du bâti BIM [Termes descripteurs IGN] Pays-Bas [Termes descripteurs IGN] système d'information géographique Résumé : (auteur) It is widely acknowledged that the integration of BIM and GIS data is a crucial step forward for future 3D city modelling, but most of the research conducted so far has covered only the high-level and semantic aspects of GIS-BIM integration. This paper presents the results of the GeoBIM project, which tackled three integration problems focussing instead on aspects involving geometry processing: (i) the automated processing of complex architectural IFC models; (ii) the integration of existing GIS subsoil data in BIM; and (iii) the georeferencing of BIM models for their use in GIS software. All the problems have been studied using real world models and existing datasets made and used by practitioners in The Netherlands. For each problem, this paper exposes in detail the issues faced, proposed solutions, and recommendations for a more successful integration. Numéro de notice : A2018-511 Thématique : GEOMATIQUE Nature : Article DOI : 10.3390/ijgi7080311 date de publication en ligne : 02/08/2018 En ligne : https://doi.org/10.3390/ijgi7080311 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91261 [article]

Advancing New Testament interpretation through spatio‐temporal analysis: Demonstrated by case studies / Vincent Van Altena in Transactions in GIS, vol 22 n° 3 (June 2018)  

Public [article]  inTransactions in GIS > vol 22 n° 3 (June 2018) . - pp 697 - 720 Titre : Advancing New Testament interpretation through spatio‐temporal analysis: Demonstrated by case studies Type de document : Article/Communication Auteurs : Vincent Van Altena, Auteur ; henk Bakker, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2018 Article en page(s) : pp 697 - 720 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes descripteurs IGN] exploration de texte [Termes descripteurs IGN] interprétation (psychologie) [Termes descripteurs IGN] Jérusalem [Termes descripteurs IGN] sciences humaines numériques [Termes descripteurs IGN] visualisation cartographique [Termes descripteurs IGN] voie romaine Résumé : (Auteur) This article explores, via three case studies, how spatio‐temporal analysis can advance New Testament text interpretation. Acts 2, verse 9 to 11 is the text of study. Case study 1 applies network analysis to data representing the Roman road network constrained by parameters valid for ancient times. This analysis provided new information on the background of people attending a festival in Jerusalem. Case study 2 located geographical entities from the text in a cartographic visualization and provided supportive information to compare contemporary textual resources. For the disciplines of textual and conjectural criticism (case study 3), spatio‐temporal analysis opens a new window to study what would be the most probable variant of the original text. The case study puts emendations that have been proposed over centuries in a 3D spatial context and provides in this way a sophisticated tool to relate different alternative variants of a specific text. From the case studies, it can be concluded that spatializing, visualizing, and spatially analyzing geographical concepts from the texts in Acts 2 contributes to the field of New Testament interpretation. Further work will elaborate on the findings. Numéro de notice : A2018-578 Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12338 date de publication en ligne : 17/08/2018 En ligne : https://doi.org/10.1111/tgis.12338 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92325 [article]

The effect of acquisition error and level of detail on the accuracy of spatial analyses / Filip Biljecki in Cartography and Geographic Information Science, Vol 45 n° 2 (March 2018)  

Public [article]  inCartography and Geographic Information Science > Vol 45 n° 2 (March 2018) . - pp 156 - 176 Titre : The effect of acquisition error and level of detail on the accuracy of spatial analyses Type de document : Article/Communication Auteurs : Filip Biljecki, Auteur ; Gerard B.M. Heuvelink, Auteur ; Hugo Ledoux, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2018 Article en page(s) : pp 156 - 176 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes descripteurs IGN] CityGML [Termes descripteurs IGN] erreur de positionnement [Termes descripteurs IGN] modèle 3D de l'espace urbain [Termes descripteurs IGN] niveau de détail [Termes descripteurs IGN] précision des données [Termes descripteurs IGN] propagation d'erreur Résumé : (Auteur) There has been a great deal of research about errors in geographic information and how they affect spatial analyses. A typical GIS process introduces various types of errors at different stages, and such errors usually propagate into errors in the result of a spatial analysis. However, most studies consider only a single error type thus preventing the understanding of the interaction and relative contributions of different types of errors. We focus on the level of detail (LOD) and positional error, and perform a multiple error propagation analysis combining both types of error. We experiment with three spatial analyses (computing gross volume, envelope area, and solar irradiation of buildings) performed with procedurally generated 3D city models to decouple and demonstrate the magnitude of the two types of error, and to show how they individually and jointly propagate to the output of the employed spatial analysis. The most notable result is that in the considered spatial analyses the positional error has a much higher impact than the LOD. As a consequence, we suggest that it is pointless to acquire geoinformation of a fine LOD if the acquisition method is not accurate, and instead we advise focusing on the accuracy of the data. Numéro de notice : A2018-008 Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2017.1279986 En ligne : https://doi.org/10.1080/15230406.2017.1279986 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=88977 [article]

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Geospatial data on the web / Linda Van Den Brink (2018)    

Public Titre : Geospatial data on the web Type de document : Thèse/HDR Auteurs : Linda Van Den Brink, Auteur ; Jantien E. Stoter, Directeur de thèse Editeur : Delft : Netherlands Geodetic Commission NGC Année de publication : 2018 Autre Editeur : Delft [Pays-Bas] : Delft University of Technology Collection : Netherlands Geodetic Commission Publications on Geodesy, ISSN 0165-1706 Importance : 232 p. Format : 21 x 30 cm Note générale : bibliographie Dissertation for the purpose of obtaining the degree of doctor at Delft University of Technology Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes descripteurs IGN] accès aux données localisées [Termes descripteurs IGN] acquisition de données [Termes descripteurs IGN] assimilation des données [Termes descripteurs IGN] CityGML [Termes descripteurs IGN] données hétérogènes [Termes descripteurs IGN] données localisées [Termes descripteurs IGN] données multisources [Termes descripteurs IGN] données topographiques [Termes descripteurs IGN] harmonisation des données [Termes descripteurs IGN] outil d'aide à la décision [Termes descripteurs IGN] RDF [Termes descripteurs IGN] recherche d'information géographique [Termes descripteurs IGN] réutilisation des données [Termes descripteurs IGN] similitude sémantique [Termes descripteurs IGN] Web des données Résumé : (auteur) Geospatial data is an increasingly important information asset for decisionmaking, from simple every day decisions like where to park your car, to national and international policy on topics like infrastructure and environment.Because of the location aspect, geospatial data is often the linking pin between different datasets and therefore important for data integration. A lot of geospatial data is created, for example, as part of governmental processes and nowadays, also disseminated as open data, traditionally through "Spatial data infrastructures" (SDIs).There is a lot of potential for reusing this data in other domains than the domain and use case for which it was originally created. My main research question was: "How to reuse geospatial data, from different, heterogeneous sources, via the web across communities?" Several aspects of data disseminationmust be addressed before open data is actually in a good position for getting reused. These aspects have been coined the "FAIR principles": findability, accessibility, interoperability, and reusability. Note de contenu : 1- Introduction, research questions and methodology 2- Definition and establishment of a national 3D standard 3- Semantic Harmonisation 4- Geospatial Linked Data 5- Web of Data 6- Discussion, Conclusion and Future work Numéro de notice : 21836 Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Thèse étrangère Note de thèse : PhD thesis : 3D Geo-Information : TU Delft : 2018 DOI : 10.4233/uuid:a0bd364d-f101-4337-91c5-92038b2a6d56 En ligne : https://www.ncgeo.nl/index.php/en/publicatiesgb/publications-on-geodesy/item/278 [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91364

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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)  

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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)  

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