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3D immersive underground navigation [short paper] / Quoc-Dinh Nguyen (2018)    

Public Titre : 3D immersive underground navigation [short paper] Type de document : Article/Communication Auteurs : Quoc-Dinh Nguyen, Auteur ; Mathieu Brédif , Auteur ; Didier Richard, Auteur Editeur : Association of Geographic Information Laboratories in Europe AGILE Année de publication : 2018 Projets : 1-Pas de projet / Conférence : AGILE 2018, 21th International Conference on Geo-Information Science 12/06/2018 15/06/2018 Lund Suède Open Access Proceedings Importance : 4 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Français (fre) Descripteur : [Termes IGN] eau usée [Termes IGN] iTowns [Termes IGN] Paris (75) [Termes IGN] reconstruction 3D [Termes IGN] rendu réaliste [Termes IGN] réseau d'assainissement [Termes IGN] réseau technique souterrain [Termes IGN] visualisation 3D [Termes IGN] vue immersive [Vedettes matières IGN] Géovisualisation Résumé : (auteur) In this paper, we describe a system for visualizing and exploiting 3D digital data of the Parisian sewer system (PSS). PSS presents a difficult working environment because it is subject to a certain number of risks: toxic gases and waste, biological risks such as viruses and pathogenic bacteria contained in wastewater. Certain areas of PSS are damp, unhealthy, encumbered with waste. In order to improve the working conditions of the sewers and usage of the network in the context of the research for a reduction on exposures to health and safety risks, we developed such system aiming to do the visualization and exploitation of 3D PSS data. Our system allows sewer operators to gather data, information for observation, direct inspection, indirect monitoring and reporting to assess the condition of such sewer system. Numéro de notice : C2018-018 Affiliation des auteurs : LaSTIG MATIS (2012-2019) Thématique : GEOMATIQUE/IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans date de publication en ligne : 20/06/2018 En ligne : https://agile-online.org/conference_paper/cds/agile_2018/shortpapers/51%20Short_ [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90476

Documents numériques

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Progressive streaming and massive rendering of 3D city models on web-based virtual globe / Quoc-Dinh Nguyen (2016)  

Public Titre : Progressive streaming and massive rendering of 3D city models on web-based virtual globe Type de document : Article/Communication Auteurs : Quoc-Dinh Nguyen, Auteur ; Mathieu Brédif , Auteur ; Didier Richard, Auteur ; Nicolas Paparoditis , Auteur Editeur : New York [Etats-Unis] : Association for computing machinery ACM Année de publication : 2016 Conférence : SIGSPATIAL GIS 2016, 24th ACM International Conference on Advances in Geographic Information Systems 31/10/2016 03/11/2016 San Francisco Californie - Etats-Unis Proceedings ACM Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] flux continu [Termes IGN] globe virtuel [Termes IGN] modèle 3D de l'espace urbain [Termes IGN] rendu (géovisualisation) [Termes IGN] temps réel [Termes IGN] visualisation de données [Vedettes matières IGN] Géovisualisation Résumé : (auteur) The need for the real-time interactive co-visualization of 3D urban environments on a Web-based virtual Globe arises naturally in GIS but it still remains challenging due to the complexity of city models and their huge data sizes which largely overload the computational power and memory capacity of client devices. Especially on the Web, the visualization of city models makes their rendering not real-time because of the lack of content adaptation and progressive data transmission. This paper presents technical solutions for the co-visualization of massive city models in a Web-based virtual globe, allowing navigation over 3D cities on the globe in real-time. The volume of 3D city data, such as building data, does not allow us to render them directly, nor to keep them in the main memory. We propose to use not only a hierarchical presentation of geo-spatial data to create a chunk-based multiple resolution data structure which reduces complexity of the geometry being rendered; but also a view dependent algorithm so that only small subsets of 3D city models are streamed progressively in real-time and kept in client memory to contribute efficiently to the rendered image. Experimental results show that we can navigate over 3D cities on the Globe in real-time. Numéro de notice : C2016-030 Affiliation des auteurs : LaSTIG MATIS (2012-2019) Thématique : GEOMATIQUE/IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1145/2996913.2997008 date de publication en ligne : 10/11/2016 En ligne : https://doi.org/10.1145/2996913.2997008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89281

3D heterogeneous interactive web mapping application / Quoc-Dinh Nguyen (2015)  

Public contenu dans VR 2015 IEEE Virtual Reality / Tobias Höllerer (2015)   Titre : 3D heterogeneous interactive web mapping application Type de document : Article/Communication Auteurs : Quoc-Dinh Nguyen, Auteur ; Alexandre Devaux , Auteur ; Nicolas Paparoditis , Auteur Congrès : VR 2015 IEEE Virtual reality (23 - 27 mars 2015; Arles, France), Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2015 Importance : pp 323 - 324 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] données localisées 3D [Termes IGN] globe virtuel [Termes IGN] modèle 3D de l'espace urbain [Termes IGN] réalité augmentée [Termes IGN] réalité virtuelle [Termes IGN] scène urbaine [Termes IGN] SIG 3D [Termes IGN] web mapping [Termes IGN] webGL Résumé : (auteur) The internet browsers nowadays show incredible possibilities with HTML5. It makes it possible to use all the power of your device such as the GPU and all its sensors, GPS, accelerometer, camera, etc. The ability to put hardware-accelerated 3D content in the browser provides a way for the creation of new web based applications that were previously the exclusive domain of the desktop environment. This paper introduces a novel implementation of a 3D GIS WebGL-based navigation system which allows end-users to navigate in a 3D realistic and immersive urban scene, to interact with different spatial data such as panoramic image, laser, 3D-city model, and vector data with modern functionalities such as using your smartphone as a remote, render for 3D screen and make the scene dynamic. Numéro de notice : C2015-032 Affiliation des auteurs : IGN (2012-2019) Thématique : GEOMATIQUE/IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/VR.2015.7223426 date de publication en ligne : 27/08/2015 En ligne : https://doi.org/10.1109/VR.2015.7223426 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83155

A 3D geospatial registration service for street level co-visualization of 2D vector maps / Quoc-Dinh Nguyen (2013)  

Public contenu dans Proceedings of the Sixth ACM SIGSPATIAL International Workshop on Computational Transportation Science / Craig A. Knoblock (2013)   Titre : A 3D geospatial registration service for street level co-visualization of 2D vector maps Type de document : Article/Communication Auteurs : Quoc-Dinh Nguyen, Auteur ; Alexandre Devaux , Auteur ; Nicolas Paparoditis , Auteur ; Mathieu Benard, Auteur Editeur : New York [Etats-Unis] : Association for computing machinery ACM Année de publication : 2013 Conférence : IWCTS 2013, 6th ACM SIGSPATIAL International Workshop on Computational Transportation Science 05/11/2013 08/11/2013 Orlando Floride - Etats-Unis Proceedings ACM Importance : pp 568 - 571 Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] données localisées 3D [Termes IGN] image panoramique [Termes IGN] interface web [Termes IGN] logiciel de visualisation [Termes IGN] navigation virtuelle [Termes IGN] service web géographique [Termes IGN] SIG 3D Résumé : (auteur) This paper introduces a novel implementation of an online spatial registration service for the 3D GIS web-based street viewer which allows end-users to interact with different spatial data (panoramic image, laser, and open data) for accessibility diagnostics and street mobility services, and to navigate an immersive and superposed multilayer urban scene in 3D. To the best of our knowledge, there are no GIS web-based open street-view systems that propose an online spatial registration for either public or professional use. We have developed an online registration service inside the 3D GIS web-based street viewer which offers an interface to integrate many available open spatial data sources, to create superposed scenes combining different data, and to helps users to interact, measure and update 3D urban maps. Numéro de notice : C2013-005 Affiliation des auteurs : LaSTIG MATIS (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1145/2525314.2525330 En ligne : http://dx.doi.org/10.1145/2525314.2525330 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80068