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Fourier series and the cartographic line / G.J. Lawford in International journal of geographical information science IJGIS, vol 20 n° 1 (january 2006)
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Titre : Fourier series and the cartographic line Type de document : Article/Communication Auteurs : G.J. Lawford, Auteur Année de publication : 2006 Article en page(s) : pp 31 - 52 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] Australie
[Termes IGN] données vectorielles
[Termes IGN] échelle cartographique
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] matrice
[Termes IGN] reconnaissance de formes
[Termes IGN] segment de droite
[Termes IGN] série de Fourier
[Termes IGN] simplification de contour
[Termes IGN] système d'information géographique
[Termes IGN] trait de côte
[Termes IGN] transformation de FourierRésumé : (Auteur) The application of Fourier Series to cartography and GIS, in particular to shape analysis, fine simplification and enhancement, and the measurement of cartographic scale, is explored. Vector representations of the Australian coastline are manipulated using Fourier techniques and the output appraised in terms of its ability to encapsulate the shape of the original coastline, or as a simplified or enhanced version of the original. Using Fourier techniques on vector representations of parts of the Australian coastline at six different cartographic scales, a relationship between cartographic scale and line complexity is found to exist, and an empirical expression of that relationship developed. The intent of developing an empirical relationship is to bring greater consistency to the process of assigning cartographic scale to data, and thereby to the process of map production, data simplification and GIS analysis. Fourier techniques are found to be a poor encapsulator of cartographic shape, a good method of line simplification and enhancement, and a promising method of measuring cartographic scale. As background, some revision of the history and mathematics of Fourier Series, and previous research into the application of Fourier Series to cartography, is given. Numéro de notice : A2006-024 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810512331319109 En ligne : https://doi.org/10.1080/13658810512331319109 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27751
in International journal of geographical information science IJGIS > vol 20 n° 1 (january 2006) . - pp 31 - 52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-06011 RAB Revue Centre de documentation En réserve L003 Disponible 079-06012 RAB Revue Centre de documentation En réserve L003 Disponible Geographic information science, 4th international conference, GIScience 2006, Münster, Germany, September 2006 / Martin Raubal (2006)
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Titre : Geographic information science, 4th international conference, GIScience 2006, Münster, Germany, September 2006 : Proceedings Type de document : Actes de congrès Auteurs : Martin Raubal, Éditeur scientifique ; Harvey J. Miller, Éditeur scientifique ; Andrew U. Frank, Éditeur scientifique ; Michael F. Goodchild, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2006 Collection : Lecture notes in Computer Science, ISSN 0302-9743 num. 4197 Conférence : GIScience 2006, 4th international conference Geographic information science 20/09/2006 23/09/2006 Münster Allemagne Proceedings Springer Importance : 417 p. Format : 15 x 23 cm ISBN/ISSN/EAN : 978-3-540-44526-5 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] analyse multicritère
[Termes IGN] calcul d'itinéraire
[Termes IGN] diagramme de Voronoï
[Termes IGN] graphe
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] OpenLS
[Termes IGN] réseau routierRésumé : (édition) The GIScience conference series was created as a forum for all researchers who are interested in advancing research in the fundamtal aspects of geographic information science. Starting with GIScience 2000 in Savannah, Georgia, USA, the conferences have been held biennially, bringing together a highly interdisciplinary group of scientists from academia, industry, and governmentto analyze progressand to explore new researchdirections. The conferences focus on emerging topics and basic research findings across all sectors of geographic information science. After three highly successful conferences in the United States, this year’s GIScience conference was held in Europe for the first time. The GIScience conferences have been a meeting point for researchers coming from various disciplines, including cognitive science, computer science, engineering, geography, information science, mathematics, philosophy, psychology, social science, and statistics.
In order to account for the different needs of the involved scientific disciplines with regard to publishing their research results, we again organized two separate stages of paper submission: 93 full papers were each thoroughly reviewed by three Program Committee members and 26 were selected for presentation at the conference and inclusion in this volume. Then, 159 extended abstracts, describing work in progress, were screened by two Program Committee members each. Subsequently, 42 of them were selected for oral presentation, and 46 for poster presentation at the conferenceNuméro de notice : 17082 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Actes DOI : 10.1007/11863939 En ligne : http://doi.org/10.1007/11863939 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79430 Voir aussiRéservation
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Code-barres Cote Support Localisation Section Disponibilité 17082-01 CG2006 Livre Centre de documentation Congrès Disponible 17082-02 CG2006 Livre Centre de documentation Congrès Disponible ISPRS workshop Multiple representation and interoperability of spatial data, Hanover, Germany, 22. - 24. February 2006 / M. Hampe (2006)
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Titre : ISPRS workshop Multiple representation and interoperability of spatial data, Hanover, Germany, 22. - 24. February 2006 Type de document : Actes de congrès Auteurs : M. Hampe, Éditeur scientifique ; Monika Sester, Éditeur scientifique ; Lars Harrie, Éditeur scientifique Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2006 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 36-2/W40 Conférence : ISPRS 2006, Multiple representation and interoperability of spatial data workshop 22/02/2006 24/02/2006 Hanovre Allemagne ISPRS OA Archives Importance : 111 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] données localisées
[Termes IGN] interopérabilité
[Termes IGN] représentation multipleNote de contenu : session 1 - Generalisation and web services
session 2 - Semantic integration
session 3 - Cartographic production
session 4 - Generalisation
session 5 - Hierarchiues in images and in text
session 6 - MatchingNuméro de notice : 17426 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Actes DOI : sans En ligne : http://www.isprs.org/proceedings/XXXVI/2-W40/ Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=88785 ContientRéservation
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Code-barres Cote Support Localisation Section Disponibilité 17426-01 CG2006 Livre Centre de documentation Congrès Disponible
Titre : Matching imperfect spatial data Type de document : Article/Communication Auteurs : Ana-Maria Olteanu-Raimond , Auteur ; Sébastien Mustière
, Auteur ; Anne Ruas
, Auteur
Editeur : Lisbonne : Instituto Geografico Portugues Année de publication : 2006 Conférence : Accuracy 2006, 7th international symposium on spatial accuracy assessment in natural resources and environmental sciences 05/07/2006 07/07/2006 Lisbonne Portugal OA Proceedings Importance : pp 319 - 328 Format : 17 x 26 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] appariement de données localisées
[Termes IGN] incertitude des données
[Termes IGN] intégration de données
[Termes IGN] qualité des donnéesRésumé : (auteur) Numéro de notice : C2006-047 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : http://spatialaccuracy.org/wp-content/uploads/2021/11/Olteanu2006accuracy.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=103377 Documents numériques
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Matching imperfect spatial data - pdf éditeurAdobe Acrobat PDFA model-driven approach to management of integrated metadata-spatial data in the context of spatial infrastructures / Chouaieb Najar (2006)
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Titre : A model-driven approach to management of integrated metadata-spatial data in the context of spatial infrastructures Type de document : Thèse/HDR Auteurs : Chouaieb Najar, Auteur Editeur : Zurich : Institut für Geodäsie und Photogrammetrie IGP - ETH Année de publication : 2006 Collection : IGP Mitteilungen, ISSN 0252-9335 num. 090 Importance : 164 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-906467-60-3 Note générale : Bibliographie
Doctoral thesisLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] architecture orientée modèle
[Termes IGN] données localisées
[Termes IGN] implémentation (informatique)
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] intégration de données
[Termes IGN] INTERLIS
[Termes IGN] interopérabilité
[Termes IGN] interopérabilité sémantique
[Termes IGN] métadonnées
[Termes IGN] métadonnées géographiques
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] prototype
[Termes IGN] relation sémantique
[Termes IGN] segmentation sémantique
[Termes IGN] serveur web
[Termes IGN] service web géographique
[Termes IGN] UMLRésumé : (Auteur) The demand for spatial metadata to describe spatial data is growing in the networked environment. Yet, currently metadata acquisition and management often play a subordinate role in many organizations and are considered overhead. If at all, metadata are acquired much after the spatial data and are stored in separate repositories. Consequently, there are two independent data sets to manage and update: spatial data and metadata. These are often redundant and inconsistent, as it is not always clear which information is metadata and which is spatial data.
Looking at the interoperability in Spatial Data Infrastructures (SDIs) from a technical point of view, the specialized spatial search engine needs spatial data which are labeled and indexed by metadata. The more reliable and consistent such metadata are, the better they support an SDI as an enabling platform to search, exchange and process spatial data. This leaves a gap between the status-quo of metadata and the demand for metadata which needs to be accounted for with new metadata management concepts.
Consequently, the main focus of this thesis concerns the optimization of metadata management by integrating metadata and spatial data in a common file or database. This common metadata-spatial data set can be considered to be 'comprehensive spatial data'.
The concept of metadata-spatial data integration enables the spatial data to carry their own metadata description with them. The approach distinguishes between already existing spatial data models, which have to be extended and newly planned data models and sets, which can managed commonly from the beginning. The different groups of metadata which can be integrated are discussed (implicitly derivable, explicitly derivable and new metadata attributes) and the principles how these might be placed in a model (top-down and bottom-up). The three steps of integration include firstly a semantic analysis and translation, secondly a structural analysis and thirdly hierarchical integration as well as a semantic transformation.
Provided that common metadata-spatial data sets exist, the concept of views offers the possibility to extract metadata and spatial data according to various standards and other excepts from the comprehensive data set. This gains flexibility and interoperability for using common metadata-spatial data sets in an SDI environment in which different services and users need different extracts and structures of a certain data or metadata set.
In order to review the feasibility of the concept of metadata-spatial data integration three test data models and their data sets are integrated with their corresponding metadata. The Swiss federal cadastral model, a water supply model of the City of Zurich and an environmental data model vary in complexity, size modeling structure, modeling language as well as in the question whether they are standardized. The results of this case study show that the integration of metadata in existing models and data sets is feasible. For each of the chosen models certain top-down and bottom-up metadata attributes are defined. Furthermore, the implicitly and explicitly derivable attributes are ascertained. In a workshop the common models were verified with experts who know the original models well.
In order to be able to use the concept of integration on any data set in a similar way, rules for the integration are necessary. Therefore, general principles are derived for object-oriented and relational modeling languages by comparing the results from the case study and abstracting them to a general case of any spatial data set. A group of general, automatic principles to insert certain metadata at a specific place in the model has been defined. These automatic principles consist of general top-down metadata that are valid for the whole model and bottom-up metadata that mirror the changes and heterogeneity of data within the model. Notwithstanding, it is also necessary for the modeling expert who knows the spatial data well to choose which metadata can be derived implicitly and explicitly.
In order to support the common management of metadata and spatial data with tools and to support new metadata-spatial data sets in their common handling, two prototype implementations are realized. The first prototype is an existing open source modeling software called INTERLIS/UML Editor, which is extended by implementing the principles for metadata-spatial data integration. For example, a new functionality is that certain metadata are added automatically when a new model is generated. Consequently common modeling for spatial data and metadata is supported in a harmonized way. The second prototype implementation explores the possibilities of creating views and functionalities of views in the relational database management system Oracle 9i. Views according to different profiles of ISO 19115 are extracted from integrated data sets.Note de contenu : Chapter 1 Introduction
1.1 Background
1.2 Motivation.
1.3 Problem Statement
1.4 Hypothesis and Objectives
1.5 Approach
1.6 Structure of the Thesis
1.7 Summary
Chapter 2 Basic Concepts and Related Literature
2.1 Basic Definitions
2.2 Spatial Data Infrastructures and GIS
2.3 Components of Spatial Data Infrastructures
2.4 Current SDI Initiatives
2.5 Spatial Data Modeling
2.6 Semantic Processing of Spatial Data Sets
2.7 Summary
Chapter 3 State of the Art in Metadata
3.2 Current Situation in Research of Metadata Management
3.2 Relevance of Concept of Integration in Research
3.3 Summary
Chapter 4 Concept of Integration and Views
4.1 Introduction to Semantic Mapping
4.2 Concept of Metadata-Spatial Data Integration
4.3 Concept of Views
4.4 Discussion in Context of SDI
4.5 Summary
Chapter 5 Creating Principles for Metadata- Spatial Data Integration
5.1 Case Study with Existing Spatial Data Sets
5.2 Discussion of Integration
5.3 The Design of Principles
5.4 Summary
Chapter 6 Prototype Implementation
6.1 Introduction of General Tools
6.2 Implementation of the Modeling Prototype.
6.3 Implementation of the View Process
6.4 Demonstrator for Web Services using Integrated Metadata Spatial Data Sets
6.5 Summary
Chapter 7 Discussion of Results
7.1 Summary of Results
7.2 Discussion of Results and Conclusion
7.3 OutlookNuméro de notice : 15200 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Thèse étrangère DOI : 10.3929/ethz-a-005201125 En ligne : http://dx.doi.org/10.3929/ethz-a-005201125 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=55092 Réservation
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