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An effective spherical panoramic LoD model for a mobile street view service / Xianxiong Liu in Transactions in GIS, vol 21 n° 5 (October 2017)  

Public [article]  inTransactions in GIS > vol 21 n° 5 (October 2017) . - pp 897 - 915 Titre : An effective spherical panoramic LoD model for a mobile street view service Type de document : Article/Communication Auteurs : Xianxiong Liu, Auteur ; Qingwu Hu, Auteur ; Mingyao Ai, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 897 - 915 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] Androïd [Termes IGN] carte [Termes IGN] image panoramique [Termes IGN] navigation [Termes IGN] niveau de détail [Termes IGN] projection [Termes IGN] réalité augmentée [Termes IGN] scène urbaine [Termes IGN] visualisation [Termes IGN] visualisation 3D [Termes IGN] Web View Service Résumé : (Auteur) Street view (panoramic view) services have begun to shift from PC platforms to mobile smart devices. Considering the capabilities of smart terminal devices, a 360° spherical level of detail (LoD) model for mobile street view services that renders panoramic images on the inner surface of a sphere via LoD is proposed in this article. Panoramic images are segmented into tiles and organized in a pyramid tile structure for LoD rendering to improve the rendering efficiency of the proposed model. A projection model between panoramic images and the spherical surface is presented to map the panoramic tiles on the spherical graticule. A street view-rendering algorithm of panoramic images is proposed with the rendering function of OpenGL for Embedded Systems (OpenGL ES). A street view service app running on Android, based on the proposed approach, is implemented to assess two aspects of the panoramic view model, namely visualization effect and efficiency. Experiment results reveal that the 360° spherical LoD model of the panoramic image can display 3D street view scenes better than the cubic panoramic view model. The proposed model also has an excellent 3D visualization effect and high-efficiency rendering ability for mobile street view services. Therefore, it is applicable in large-scale mobile street view services both online and offline and in augmented reality navigation. Numéro de notice : A2017-632 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12247 En ligne : http://dx.doi.org/10.1111/tgis.12247 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86950 [article]

3D web services for visualization and data sharing in 3D cadastre / Ali Zare Zardiny in International journal of 3-D information modeling, vol 4 n° 4 (October - December 2015)  

Public [article]  inInternational journal of 3-D information modeling > vol 4 n° 4 (October - December 2015) . - pp 1 - 15 Titre : 3D web services for visualization and data sharing in 3D cadastre Type de document : Article/Communication Auteurs : Ali Zare Zardiny, Auteur ; Farshad Hakimpour, Auteur Année de publication : 2015 Article en page(s) : pp 1 - 15 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cadastre étranger [Termes IGN] cadastre 3D [Termes IGN] cartographie à la volée [Termes IGN] CityGML [Termes IGN] données localisées 3D [Termes IGN] droit foncier [Termes IGN] géovisualisation [Termes IGN] information sémantique [Termes IGN] interopérabilité [Termes IGN] Iran [Termes IGN] partage de données localisées [Termes IGN] service web géographique [Termes IGN] Web Feature Service [Termes IGN] Web Map Tile Service [Termes IGN] Web View Service Résumé : (Auteur) Land has an essential role in any society, either as one of the most important capitals of mankind or as a place for people's life and activities. Therefore, registration of ownership and land use rights in a formal system is a major issue. In different countries, Cadastre systems can register extent, rights, restrictions and responsibilities related to land parcels. Many organizations such as municipality, tax and banks need to this information for planning and decision making. Considering the needs for land information by different organizations, access to cadastre data gains a lot of importance. Despite this importance, access to cadastre information encounter with different challenges such as differences in platforms or data structures and access to semantic and geometric data. The main goal of this research is to overcome these challenges and to improve the interoperability in sharing and accessing 3D cadastre data and challenges. This paper investigates capabilities of current 3D Spatial Web Services: WFS, WVS, WTS and W3DS as well as advantages of using these 3D services for access to 3D cadastre data. The authors also combined the legal classes of LADM with geometrical classes of CityGML for transferring the semantic and geometric cadastre data. Finally, some prospects of using 3D Web Services will be illustrated through implementation the scenarios. The most important advantages of using 3D Spatial Web Services in cadastre are on the fly construction and on demand presentation of 3D cadastral model, facilitating of access to legal and descriptive cadastre information, no necessity to user's awareness of data structure in cadastre database and compatibility with different levels of users. Numéro de notice : A2016-428 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.4018/IJ3DIM.2015100101 En ligne : http://doi.org/10.4018/ij3dim.2015100101 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81322 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
138-2015041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

OGC 3D standards candidate / Alexander Zipf in GEO: Geoconnexion international, vol 9 n° 6 (june 2010)

Public [article]  inGEO: Geoconnexion international > vol 9 n° 6 (june 2010) . - pp 28 - 29 Titre : OGC 3D standards candidate Type de document : Article/Communication Auteurs : Alexander Zipf, Auteur Année de publication : 2010 Article en page(s) : pp 28 - 29 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes IGN] 3D symbology encoding [Termes IGN] Open geospatial consortium [Termes IGN] standard OGC [Termes IGN] Web 3D Service [Termes IGN] Web View Service Résumé : (Editeur) [introduction] The Open Geospatial Consortium (OGC) has published three new candidate standards which are related to the 3D GeoWeb as public discussion papers (DP) on its website. These are: a revised version of the Web 3D Service (W3DS), the Web View Service (WVS), an extension profile of the Symbology Encoding Specification for 3D (SE 3D) has been added that can be used with the both services. These establish a new family of 3D portrayal services focusing on virtual 3D maps, interactive virtual environments, and 3D cartographic visualization. Numéro de notice : A2010-198 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30392 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
062-2010061	SL	Revue	Centre de documentation	Revues en salle	Disponible