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GI-base final report / D. Prodger (1997)
Titre : GI-base final report : study on demand and supply for geographic information in Europe prepared for directorate general XIII of the European Commission, version 1.1 Type de document : Rapport Auteurs : D. Prodger, Auteur ; N. Sutherland, Auteur ; Ordnance Survey, Auteur ; Navigation technologies, Auteur ; Elda ingegneria, Auteur Mention d'édition : 1.1 Editeur : Londres : Ordnance Survey OS Année de publication : 1997 Importance : 300 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] base de données localisées
[Termes IGN] coût
[Termes IGN] étude de marché
[Termes IGN] information géographique numérique
[Termes IGN] infrastructure européenne de données localisées
[Termes IGN] marché de l'information géographique
[Termes IGN] métadonnées
[Termes IGN] Union EuropéenneNuméro de notice : 11929 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Rapport Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=40085 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 11929-01 37.00 Livre Centre de documentation Géomatique Disponible GI-meta final report prepared for the European commission / T. Wood (1997)
Titre : GI-meta final report prepared for the European commission Type de document : Rapport Auteurs : T. Wood, Auteur ; S. Cassettari, Auteur Editeur : Cambridge : Geoinformation International Année de publication : 1997 Importance : 164 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] infrastructure européenne de données localisées
[Termes IGN] métadonnées
[Termes IGN] Union EuropéenneNuméro de notice : 66983 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Rapport Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=44600 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 66983-01 37.00 Livre Centre de documentation Géomatique Disponible Recommendations on metadata / Centre for Earth Observation CEO (1997)
Titre : Recommendations on metadata : describing the data, services and information you have available, a user guide provided by the centre for Earth observation programme of the European Commission, version 1.1 may 1997 [CEO programme] Type de document : Guide/Manuel Auteurs : Centre for Earth Observation CEO, Auteur ; Space applications institute, Auteur ; Joint research centre = Centre commun de recherche (Ispra, Italie), Auteur ; European commission, Auteur Mention d'édition : 1.1 Editeur : Londres : Centre for Earth Observation CEO Année de publication : 1997 Importance : 57 p. Format : 21 x 22 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] infrastructure européenne de données localisées
[Termes IGN] métadonnées
[Termes IGN] Union EuropéenneNuméro de notice : 11950 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Guide Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=38715 Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 11950-02 37.00 Livre Centre de documentation Géomatique Disponible 11950-01 37.00 Livre Centre de documentation Géomatique Disponible Spatial raster data management for geo-information systems, a database perspective / Stephan Nebiker (1997)
Titre : Spatial raster data management for geo-information systems, a database perspective Type de document : Thèse/HDR Auteurs : Stephan Nebiker, Auteur Editeur : Zurich : Institut für Geodäsie und Photogrammetrie IGP - ETH Année de publication : 1997 Collection : IGP Mitteilungen, ISSN 0252-9335 num. 063 Importance : 176 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-906467-03-0 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] base de données localisées
[Termes IGN] données maillées
[Termes IGN] échange de données informatisé
[Termes IGN] géoréférencement
[Termes IGN] maille carrée
[Termes IGN] métadonnées
[Termes IGN] modélisation
[Termes IGN] système d'information géographiqueRésumé : (auteur) In numerous geomatics domains, vast amounts of spatial raster data are being acquired by high-performance scanning devices, digital cameras and high-resolution remote sensors. The efficient storage, handling, querying and retrieval of this data is one of the main challenges facing producers and users of spatial information. Existing raster management solutions are generally restricted to the file-based handling of limited-size raster objects with limited support for spatial aspects. In GIS, spatial raster data, such as raster maps, raster imagery, digital terrain models and thematic raster data are traditionally not integrated within the overall data management concept. Thus, they cannot benefit from standard database services such as querying, integrity and concurrency control, features which are usually available for the other GIS data types. This dissertation documents the investigations and developed concepts for the management of large spatial raster objects and raster mosaics in a DBMS framework. Furthermore, it discusses the design and implementation of a prototype spatial raster management system, which was developed for the evaluation of these concepts. In the first part, the theoretical foundation for the subsequent investigations is established. This includes the examination and documentation of the fundamental principles and characteristics of spatial raster data. It also incorporates the evaluation of raster modelling concepts, database models and technologies as well as storage management concepts and mass storage technologies. In the second and main part, a number of new or modified spatial raster management concepts are described. Most of them are data model-independent and can be implemented on any modern DBMS technology. The first concept is a tile-based spatial partitioning concept for raster mosaics with an indexing scheme based on the Morton ordering. This space ordering scheme provides efficient spatial access to mosaic tiles through linear indexing techniques available on all DBMSs. In combination with the presented query optimisation concept, this indexing scheme also supports efficient spatial range queries with a low oversearch ratio. Secondly, a novel approach is presented with the tile-based multi-resolution concept for raster mosaics. This concept uses a resolution pyramid of constant-dimension tiles covering different spatial extents. With this approach, the number of database objects to be retrieved can be kept roughly constant over the entire zoom range. By combining the resolution access with the spatial access, the concept allows the reduced-resolution tiles to be spatially indexed and accessed via the same indexing scheme. It also allows the resolution access to be implemented on the DBMS server as a relatively simple filtering operation. Thirdly, a multi-level georeferencing concept for raster objects is presented. This concept allows the spatial extents of raster objects to be represented and queried at different levels of approximation. It therefore supports coordinate system-independent global and systemspecific local search scenarios. The design and development of the prototype spatial raster management system GrIdS allowed a number of these concepts to be implemented and evaluated. The system architecture supports DBMS-internal and external raster data storage with a modular compression support mechanism. DBMS-internal storage currently uses the Binary Large Object (BLOB) concept, whereas DBMS-external uses a file-based solution. The prototype system was implemented on the basis of a relational DBMS (Oracle 7.3). The system tests were primarily focused on the functionality and performance of the mosaic management solution, which incorporated the majority of new concepts. The tests were performed on a series of mosaics which had been generated from raster maps and orthoimages. The tests showed excellent and consistent tile access times. The spatial range query performance was generally very good but occasionally it was affected by an outlier with a large tile oversearch. It was shown that these outliers can be completely eliminated if the proposed query optimisation is applied. Extensive window retrieval tests were performed, which yielded good retrieval times. The import and export tests with large raster objects revealed a relatively moderate system performance. The main limiting factor was identified as the low performance of the available test platform. Typical database features such as concurrent mosaic retrieval and update were successfully verified. On the whole, the system implementation and tests demonstrated that the developed concepts can be implemented relatively easily and rapidly. They are suitable for building robust, efficient and scaleable raster management solutions on the basis of standard DBMS technology. The concepts could also be integrated with spatial database extensions used in numerous GISs. The shortcomings of the test platform with respect to I/O performance are discussed and recommendations for future system configurations together with high-performance and high-capacity storage solutions are provided. Numéro de notice : 66949 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Thèse étrangère DOI : 10.3929/ethz-a-001847022 En ligne : http://dx.doi.org/10.3929/ethz-a-001847022 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=61679 Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 66949-01 37.10 Livre Centre de documentation Géomatique Disponible 66949-02 37.10 Livre Centre de documentation Géomatique Disponible Meta-données et geomanagement / Christian Crépeau in SIG et télédétection, n° 14 (juillet 1995)
[article]
Titre : Meta-données et geomanagement Type de document : Article/Communication Auteurs : Christian Crépeau, Auteur Année de publication : 1995 Article en page(s) : pp 7 - 10 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] métadonnées
[Termes IGN] métadonnées géographiquesNuméro de notice : A1995-027 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25757
in SIG et télédétection > n° 14 (juillet 1995) . - pp 7 - 10[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 072-95021 RAB Revue Centre de documentation En réserve L003 Disponible Terra 2 understanding the terrestrial environment - Remote sensing data systems and networks / Paul M. Mather (1995)PermalinkEDIGEO, guide de l'utilisateur, 1. Concepts généraux en matière d'échange de données / M. Flochel (1994)PermalinkEDIGEO, guide de l'utilisateur, 2. Processus conceptuel, technique, applicatif / M. Flochel (1994)PermalinkEDIGEO, guide de l'utilisateur, 3. Grammaire, description physique des métafichiers éditables / M. Flochel (1994)PermalinkKnowledge & meta-information in GIS / Laura Vidale (06/09/1993)PermalinkInformation Exchange Forum on Spatial Metadata / Federal geographic data committee (1992)PermalinkAdvances in spatial databases, 2nd symposium, SSD '91, Zurich, Switzerland, August 1991, Proceedings / Oliver Günther (1991)Permalink