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contenu dans Advances in Spatial Data Handling : 10th International Symposium on Spatial Data Handling / Dianne Richardson (2002)
Titre : A methodology for updating geographic databases using map versions Type de document : Article/Communication Auteurs : Ally Peerbocus, Auteur ; Geneviève Jomier, Auteur ; Thierry Badard , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2002 Conférence : SDH 2002, 10th international symposium on Spatial Data Handling 09/07/2002 12/07/2002 Ottawa Canada Proceedings Springer Importance : pp 363 - 376 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] base de données localisées
[Termes IGN] cohérence des données
[Termes IGN] conflit d'intégration
[Termes IGN] intégration de données
[Termes IGN] mise à jour de base de données
[Termes IGN] système d'information géographiqueRésumé : (Auteur) This paper addresses issues concerning the exchange and integration of geographic data between producers and users. Once a producer has delivered a geographic database to a user, who then uses it as a reference for specific applications, the database may be updated on both sides. Consequently, the integration of future updates - delivered by the producer -in the user's geographic database is a complex operation due to possible conflicts between updates performed by both parties. The resulting database may become inconsistent and the user's added information may be lost. Users therefore need mechanisms to help them in the process of update integration. This paper provides a methodological framework for the updating of geographic databases. It relies on a multi-version GIS, allowing an automatic detection of conflicting updates between two map versions. Numéro de notice : C2002-009 Affiliation des auteurs : COGIT+Ext (1988-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-642-56094-1_27 En ligne : https://doi.org/10.1007/978-3-642-56094-1_27 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64967 A new merging process for data integration based on the Discrete Fréchet Distance / Thomas Devogele (2002)
contenu dans Advances in Spatial Data Handling : 10th International Symposium on Spatial Data Handling / Dianne Richardson (2002)
Titre : A new merging process for data integration based on the Discrete Fréchet Distance Type de document : Article/Communication Auteurs : Thomas Devogele , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2002 Conférence : SDH 2002, 10th international symposium on Spatial Data Handling 09/07/2002 12/07/2002 Ottawa Canada Proceedings Springer Importance : pp 167 - 182 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] appariement de données localisées
[Termes IGN] distance de Fréchet
[Termes IGN] fusion de données
[Termes IGN] intégration de donnéesRésumé : (auteur) The overlay process is currently one of the main computational solutions used to integrate several data layers from different sources. Unfortunately, it is problematic when trying to overlay many layers. This leads to several geometric problems such as the management of sliver polygons. This paper proposes a new merging process to complement the vector overlay for data integration of several layers. This process, based on measures derived from the Fréchet distance, matches common points (either lines or polygons). It also merges an ordered set of pairs of matching points (vertices) into a single geometry. Numéro de notice : C2002-023 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-642-56094-1_13 En ligne : https://doi.org/10.1007/978-3-642-56094-1_13 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79515 Vistas for Geodesy in the New Millennium, ch. Status of the European Reference Frame, EUREF / Jozsef Adam (2002)
Titre de série : Vistas for Geodesy in the New Millennium, ch Titre : Status of the European Reference Frame, EUREF Type de document : Article/Communication Auteurs : Jozsef Adam, Auteur ; Wolfgang Augath, Auteur ; Claude Boucher , Auteur ; Carine Bruyninx, Auteur ; et al., Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2002 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 125 Conférence : IAG 2001, scientific assembly 07/09/2001 07/09/2001 Budapest Hongrie Proceedings Springer Importance : pp 42 - 46 Note générale : bibliographie
auteurs : Jozsef Adam, Wolfgang Augath, Claude Boucher, Carine Bruyninx, Alessandro Caporali, Erich Gubler, Werner Gurtner, Heinz Habrich, Bjorn Geirr Harsson, Helmut Hornik, Johannes Ihde, Ambrus Kenyeres, Hans v. d. Marel, Hermann Seeger, Jaroslav Simek, Guenter Stangl, João Agria Torres, Georg Weber & Members of the EUREF Technical Working GroupLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] EUREF
[Termes IGN] réseau permanent EUREFRésumé : (auteur) The purpose of EUREF, the SubCommission for Europe of IAG’s (International Association of Geodesy) Commission X on Global and Regional Geodetic Networks, is the establishment and maintenance of the European Reference Frame. This is being achieved by means of a number of space geodetic reference stations (SLR and VLBI), an array of GPS permanent sites the EUREF Permanent Network (EPN), a network of highprecision geodetic reference sites determined by GPS campaigns, and the combination of the Unified European Levelling Network (UELN) and the European Vertical GPS Reference Network (EUVN). The ETRS89 (European Terrestrial Reference System 1989) is being adopted by several countries and organisations in Europe as the official system for geo-referencing. The European Community will use ETRS89 as conventional reference system as well. This paper describes the status of the different EUREF components and projects (GPS campaigns, EPN, UELN, EUVN), as well as some organisational aspects (the rebuilding of the homepage www.euref-iag.org, absolutely necessary for a better distribution of the information), and the relationship with other organisations. Numéro de notice : C2001-057 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-662-04709-5_8 Date de publication en ligne : 29/06/2013 En ligne : https://doi.org/10.1007/978-3-662-04709-5_8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102827 Towards an Integrated Global Geodetic Observing System (IGGOS). Quality analysis of some IGS weekly combined solutions with respect to ITRF / Zuheir Altamimi (01/03/2001)
Titre de série : Towards an Integrated Global Geodetic Observing System (IGGOS) Titre : Quality analysis of some IGS weekly combined solutions with respect to ITRF Type de document : Article/Communication Auteurs : Zuheir Altamimi , Auteur ; Claude Boucher , Auteur ; Patrick Sillard , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 01/03/2001 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 120 Conférence : IAG 1998, symposium IGGOS 05/10/1998 06/10/1998 Munich Allemagne Proceedings Springer Importance : pp 93 - 95 Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] matrice de covariance
[Termes IGN] qualité des données
[Termes IGN] série temporelleIndex. décimale : 30.10 Systèmes de référence et réseaux géodésiques Résumé : (auteur) IGS has initiated a pilot project in 1995 for ITRF densification. Within this project, the IGS analysis centers produce weekly sets of station positions with full variance-covariance matrices provided in SINEX format. These weekly individual solutions are then combined by 3 associated analysis centers, namely JPL, MIT and NCL. This poster will attempt to analyse some recent IGS weekly combined solutions with respect to ITRF96 used as reference by IGS starting on March 1, 1998. The analysis of these solutions will focus on their quality as well as the fit to ITRF96 in terms of terrestrial reference frame fixing. Moreover, as part of EUREF activities, analogous weekly solutions are also performed by CODE, which are also analysed and presented in this poster. Numéro de notice : 14870 Affiliation des auteurs : LAREG (1991-2011) Thématique : POSITIONNEMENT Nature : Communication nature-HAL : Poster-avec-CL DOI : 10.1007/978-3-642-59745-9_13 En ligne : http://dx.doi.org/10.1007/978-3-642-59745-9_13 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64378 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14870-01 30.10 Tiré à part Centre de documentation Géodésie Disponible Distributed virtual worlds / Stephan Diehl (2001)
Titre : Distributed virtual worlds : foundations and implementation techniques using VRML, JAVA, and CORBA Type de document : Monographie Auteurs : Stephan Diehl, Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2001 Importance : 166 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-3-540-67624-9 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Langages informatiques
[Termes IGN] CORBA
[Termes IGN] données localisées 3D
[Termes IGN] implémentation (informatique)
[Termes IGN] internet
[Termes IGN] Java (langage de programmation)
[Termes IGN] Java3D
[Termes IGN] monde virtuel
[Termes IGN] protocole
[Termes IGN] protocole IP
[Termes IGN] protocole TCP
[Termes IGN] réalité virtuelle
[Termes IGN] VRMLRésumé : (Documentaliste) Cet ouvrage développe les bases du VRML, les protocoles utilisés (TCI/IP et ceux propres aux mondes répartis), la partition des mondes virtuels répartis, le " streaming ", les technologies 3D pour Internet et explique la mise en œuvre avec Java et Corba. Note de contenu : Part 1) Introduction
1. Motivation
1.1 Peloton
1.2 A Virtual Theater
1.3 Electronic Commerce
2. Technical Aspects
2.1 Terminology
2.2 Requirements
2.3 Technologies, Languages and Protocols
3. User Perspective
3.1 Applications
3.2 Commercial and Experimental Virtual Worlds
3.3 Navigation
3.4 Communication
3.5 Multi-User Worlds - The Future ?
Part 2) Fundamentals
4. Three-Dimensional Computer Graphics
4.1 Some Mathematical Preliminaries
4.2 The Graphics Pipeline
5. Virtual Reality Modeling Language (VRML)
5.1 History of VRML
5.2 What is VRML ?
5.3 Concepts of VRML
5.4 VRML : An Example
5.5 Static Scenes
5.5.1 Geometric Nodes
5.5.2 Appearance
5.5.3 Transformations
5.5.4 Other Static Nodes
5.5.5 DEF/USE
5.5.6 Extensibility
5.6 Dynamic VRML
5.6.1 Events, Routes, Sensors and Interpolators
5.6.2 Script
5.6.3 Animations Using the External Authoring Interface
5.6.4 Problems with the EA1
5.7 Conclusion
6. Protocols for Distributed Virtual Worlds
6.1 Internet Protocols - TCP/IP
6.1.1 Network Layer: Internet Protocol (IP)
6.1.2 Transport Layer: Transmission Control Protocol (TCP)
6.1.3 Transport Layer: User Datagram Protocol (UDP)
6.1.4 Transport Layer: Multicast IP
6.2 A Layer Model for Distributed Virtual Worlds
6.3 Architectures for Virtual Worlds
6.4 Behavior
6.5 Consistency
6.6 Protocols for Distributed Virtual Worlds
6.6.1 Distributed Interactive Simulation (DIS)
6.6.2 Distributed Worlds Transfer and Communication Protocol (DWTP)
6.6.3 The Multi-User 3D Protocol (Mu3D)
6.6.4 Virtual Reality Transfer Protocol (VRTP)
6.7 Conclusion
7. VRML Extensions for Distributed Virtual Worlds
7.1 VSPLUS : Sharing Events Through Net Nodes
7.2 VASE Multicast-VR
7.3 Living Worlds
7.3.1 Motivation
7.3.2 Living Worlds Terminology
7.3.3 Zones
7.3.4 Shared Objects and Avatars
7.4 Conclusion
8. Partitioning of Distributed Virtual Worlds
8.1 Spatial Partitioning
8.1.1 Grids
8.1.2 Level of Detail (LOD)
8.1.3 Bounding Boxes
8.1.4 Binary Space Partitioning Trees
8.1.5 Cells and Portals
8.2 Spatial Partitioning of Multi-User Worlds
8.2.1 Filtering
8.2.2 Locales and Beacons
8.2.3 Aura
8.3 Conclusion
9. Streaming
9.1 Continuous Data Streams
9.1.1 Compression
9.1.2 Streaming in Practice
9.2 Continuous Data Streams in Distributed Virtual Worlds
9.3 Relevant Internet Protocols
9.3.1 Resource Reservation Protocol (RSVP)
9.3.2 Real-Time Streaming Protocol (RTSP)
9.3.3 Real-Time Transport Protocol (RTP)
9.4 Quality of Service for Streaming
9.4.1 Forward Error Control
9.4.2 Interarrival Jitter
9.4.3 Combined Jitter and Error Control
9.5 Spatial Hierarchical Compression
9.6 Conclusion
10. 3D Technologies for the Internet
10.1 Quicktime VR
10.2 MetaStream
10.3 VRML
10.4 MPEG-4
10.5 Pure Java 1.1 Applets
10.6 Java3D
10.7 X3D
10.8 Summary
Part 3) Implementation
11. Implementing Multi-User Worlds with VRML
11.1 Requirements
11.2 Existing Systems
11.3 Java- and EA1-Based Approaches
11.4 A CORBA-Based Approach
12. Java Network-Programming : A Simple Distributed Virtual World
12.1 Java Network Programming
12.1.1 HTTP Connections (Hypertext Transfer Protocol)
12.1.2 TCP (Transfer Control Protocol)
12.1.3 UDP (User Datagram Protocol)
12.1.4 Multicast UDP
12.1.5 Object Serialization
12.1.6 Remote Method Invocation (RMI)
12.2 Miss Connectivity
12.2.1 Architecture and Protocol of MissC
12.2.2 Resources of the Dead
12.2.3 Some Implementation Details of the Protocol
12.2.4 Alternative Implementations of the Protocol
12.2.5 Some Implementation Details of the Scene
12.2.6 Intra-Browser Communication
12.3 Conclusion
13. Implementing Multi-User Worlds with CORBA
13.1 A Gentle Introduction to CORBA
13.1.1 Common Object Request Broker Architecture (CORBA)
13.1.2 Object Request Broker (ORB)
13.1.3 Object Adapter
13.1.4 Interface Definition Language (IDL)
13.2 A CORBA-Based Multi-User World
13.2.1 The Protocol
13.2.2 The Client
13.2.3 The Server
13.2.4 An Alternative Protocol
13.2.5 Intra-Browser Communication
13.3 Conclusion
14. The FutureNuméro de notice : 13223 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54924 Réservation
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