Descripteur
Termes IGN > géomatique > base de données localisées > généralisation automatique de données
généralisation automatique de donnéesVoir aussi |
Documents disponibles dans cette catégorie (548)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Titre : EuroSDR-Project : Final report Type de document : Rapport Auteurs : Jantien E. Stoter, Auteur ; Görres Grenzdorffer, Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2010 Collection : EuroSDR official publication, ISSN 0257-0505 num. 58 Importance : 270 p. Format : 21 x 30 cm Accompagnement : 1 cédérom ISBN/ISSN/EAN : 978-90-5179-887-6 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] acquisition de données
[Termes IGN] analyse comparative
[Termes IGN] chambre à moyen format
[Termes IGN] chambre DTC
[Termes IGN] évaluation des données
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] instrument aéroporté
[Termes IGN] lisibilité perceptive
[Termes IGN] logiciel de cartographieNote de contenu : 1 : State-of-the-art of automated generalisation in commercial software / Jantien Stoter
2 : Commission 1: Performance of medium format digital airborne cameras / Görres GrenzdörfferNuméro de notice : 15534 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Rapport En ligne : http://www.eurosdr.net/sites/default/files/uploaded_files/eurosdr_publication_nd [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62753 ContenuRéservation
Réserver ce documentExemplaires(3)
Code-barres Cote Support Localisation Section Disponibilité 15534-01 37.30 Livre Centre de documentation Géomatique Disponible 15534-03 37.30 Livre Centre de documentation Géomatique Disponible 15534-02 K325 Livre LASTIG Dépôt en unité Exclu du prêt Documents numériques
en open access
Eurosdr bull 58Adobe Acrobat PDF EuroSDR research on state-of-the-art of automated generalisation in commercial software: main findings and conclusions / Jantien E. Stoter (2010)
Titre : EuroSDR research on state-of-the-art of automated generalisation in commercial software: main findings and conclusions Type de document : Article/Communication Auteurs : Jantien E. Stoter, Auteur ; Blanca Baella, Auteur ; Connie Blok, Auteur ; Dirk Burghardt, Auteur ; Francisco Dávila, Auteur ; Cécile Duchêne , Auteur ; Maria Pla, Auteur ; Nicolas Regnauld , Auteur ; Guillaume Touya , Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2010 Conférence : ICA 2010, 13th ICA Workshop on Generalisation and Multiple Representation 12/09/2010 13/09/2010 Zürich Suisse OA Proceedings Importance : 6 p. Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] généralisation automatique de données
[Vedettes matières IGN] GénéralisationRésumé : (auteur) [introduction] This paper presents the results of the EuroSDR (European Spatial Data Research) research project that studied the state-of-the-art of automated generalisation in commercial software in a collaboration between National Mapping Agencies (NMAs), research institutes and vendors. The aims of the study were to learn more about generic and specific map requirements of NMAs, to show possibilities and limitations of commercial generalisation software, and to identify areas for further developments based on latest research advances. The project consisted of three main steps: requirements analysis, testing, and evaluation. The requirement analysis (carried out from Oct 2006 till June 2007) resulted in four representative test cases, formalised and harmonised NMA map specifications for automated generalisation as well as an analysis of the defined specifications that shows the similarities and differences between map specifications of different NMAs. The four NMAs who provided the test data are: Ordnance Survey Great Britain (OSGB), Institut Géographique National, France (IGNf), The Netherlands’ Kadaster (Kadaster) and Institut Cartogràfic de Catalunya (ICC). The testing was performed from June 2007 to Spring 2008 by project team members (from NMAs and research institutes) on out-of-the-box versions of four generalisation systems: ArcGIS (ESRI), Change/Push/Typify (University of Hanover), Radius Clarity (1Spatial) and axpand (Axes Systems). At the same time the vendors (except Axes systems) carried out tests with the same test cases with possibly improved and/or customised versions of their systems. The tests resulted in 35 outputs consisting of 700 thematic layers, where it should be noted that the effort to execute one test was approximately 1 week. Several example outputs with an extract of the same test case are shown in Figure 1. The evaluation, carried out from summer 2008 to spring 2009, consisted of an evaluation of meta aspects (based on information recorded by the testers) and of an evaluation of the generalised outputs themselves. The latter evaluation consisted of three parts that complemented each other: a) automated constraint-based evaluation, b) evaluation which visually compared different outputs for one test case and c) a qualitative evaluation of outputs by cartographic experts. Numéro de notice : C2010-052 Affiliation des auteurs : COGIT+Ext (1988-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://kartographie.geo.tu-dresden.de/downloads/ica-gen/workshop2010/genemr2010 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98917 Documents numériques
peut être téléchargé
EuroSDR research ... - pdf auteurAdobe Acrobat PDF Formalization and data enrichment for automated evaluation of building pattern preservation / Xiang Zhang (2010)
Titre : Formalization and data enrichment for automated evaluation of building pattern preservation Type de document : Article/Communication Auteurs : Xiang Zhang, Auteur ; Jantien E. Stoter, Auteur ; Tinghua Ai, Auteur ; Menno-Jan Kraak, Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2010 Conférence : ISPRS 2010, Commission 2, Joint International Conference on Theory, Data Handling and Modelling 26/05/2010 28/05/2010 Hong Kong Hong Kong OA ISPRS Archives Importance : 6 p. Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] appariement de modèles conceptuels de données
[Termes IGN] évaluation des données
[Termes IGN] généralisation automatique de données
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] lisibilité perceptive
[Termes IGN] modèle géométrique du bâti
[Termes IGN] programmation par contraintesRésumé : (auteur) Automated evaluation of generalization output relies to a large extent on that requirements (e.g. specifications, constraints) being formalized in machine-readable formats. Previous studies suggest that the formalization and automated evaluation are relatively easier for legibility constraints (improve the readability of maps) than for preservation constraints (preserving important real-world phenomena). Three major difficulties, i.e., pattern classification and characterization, pattern matching, and constraint formalization, in the automated evaluation of building pattern preservation constraint are analyzed in this paper. A classification of available building patterns is reviewed based on a previous work. In addition, the transition events describing allowed changes for building patterns to preserve during generalization are obtained through the study of existing maps series (from 1:10k to 1:100k). Based on the obtained knowledge on pattern types and acceptable transition events, an approach to automatically match corresponding building patterns at different scales is presented. The methodology proposed is validated by applying it to the interactively generalized data. The result shows promising results and also further improvement in order to apply the method in an overall evaluation to indicate acceptable generalization solutions. Numéro de notice : 14813 Affiliation des auteurs : non IGN Nature : Communication DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/part2/Papers/12_Paper.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73993 Documents numériques
en open access
14813 Formalization and data enrichmentAdobe Acrobat PDF
Titre : State-of-the-art of automated generalisation in commercial software Type de document : Chapitre/Contribution Auteurs : Jantien E. Stoter, Éditeur scientifique ; Blanca Baella, Auteur ; Connie Block, Auteur ; Dirk Burghardt, Auteur ; Cécile Duchêne , Auteur ; Maria Pla, Auteur ; Nicolas Regnauld , Auteur ; Guillaume Touya , Auteur ; et al., Auteur Editeur : Dublin : European Spatial Data Research EuroSDR Année de publication : 2010 Collection : EuroSDR official publication, ISSN 0257-0505 num. 58 Importance : pp 9 - 231 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse comparative
[Termes IGN] généralisation automatique de données
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] généralisation géométrique (de visualisation)
[Termes IGN] lisibilité perceptive
[Termes IGN] logiciel de cartographie
[Termes IGN] méthodologie
[Termes IGN] système d'information géographique
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) : This report presents the EuroSDR research project that studied the state-of-the-art of automated generalisation in commercial software in a collaboration between National Mapping Agencies (NMAs), research institutes and vendors. The aims of the study were to learn more about generic and specific map requirements of NMAs, to show possibilities and limitations of commercial generalisation software, and to identify areas for further developments based on latest research advances. The project consisted of three main steps: requirements analysis, testing, and evaluation. The requirement analysis (carried out between Oct 2006 till June 2007) resulted in four representative test cases, formalised and harmonised NMA map specifications for automated generalisation as well as an analysis of the defined specifications that shows the similarities and differences between map specifications of different NMAs. Between June 2007 and Spring 2008 tests were performed by project team members (from NMAs and research institutes) on out-of-the-box versions of four generalisation systems: ArcGIS (ESRI), Change/Push/Typify (University of Hanover), Radius Clarity (1Spatial) and axpand (Axes Systems).At the same time the vendors (except Axes systems) carried out tests with the same test cases with improved and/or customised versions of their systems. The tests resulted in 35 outputs consisting of 700 thematic layers, where it should be noted that the effort for one test was approximately 1 week. The evaluation, carried out between summer 2008 and spring 2009, consisted of an evaluation of meta aspects (based on information recorded by the testers) and of an evaluation of the generalised datasets
themselves. The latter evaluation consisted of three parts that completed each other: a) automated constraint-based evaluation, b) evaluation which visually compared different outputs for one test case and c) a qualitative evaluation by cartographic experts. From the project results it can be concluded that all systems offer potentials for automated generalisation. However the results highlighted a few issues that identify areas for further development in both research and commercial systems. Although the results show that for many problems solutions do exist (e.g. building simplification), the algorithms are difficult to parameterise and a direct match between parameters and specifications was often missing. In addition none of the four test cases were fully solved by the out-of-the-box systems. While some problems are close to being solved (generalisation of individual buildings and roads), a few problems are far from being solved. Firstly it is impossible with the tested systems to apply different algorithms and/or parameter values in different contexts. This is either not supported or a measure to detect the appropriate contexts is missing. Another remaining generalisation software problem is operations that concern more than one object (e.g. network typification). Also, the generalisation of the topographic context in an integrated manner with the terrain is not appropriately covered in the tested systems. It should be noted that some of the missing functionalities were fixed in the vendors’ parallel tests (e.g. buildings elimination and displacement algorithms in ArcGIS and Radius Clarity). Although these results may seem disappointing, some final thoughts may help to put the results in the right context. Firstly the project had very high ambitions (i.e. many specifications were defined; the selection of test cases focused on known and complex problems; the ultimate aim of the generalisation process was high quality paper maps). Secondly, the project is well received by vendors to push internal developments. In addition it is not a surprise that out-of-the box versions are not capable of fulfilling NMA requirements, which is also shown by the fact that customised systems are used more satisfactory in practice. Consequently customisation of the systems should be further developed and should be one of the focuses in a future project.Note de contenu : 1. PRESENTATION OF THE PROJECT
1.1 Introduction
1.2 Previous research related to map specifications for automated map generalisation
1.3 Scope of the current study
1.4 Project set up
2. METHODOLOGY
2.1 Requirement analysis
2.2 The test process
2.3 Evaluation of system capabilities, test processes and constraint expressions
2.4 Evaluation of generalised outputs
3. RESULTS AND INTERPRETATION
3.1 Outputs of the tests
3.2 Evaluation of the capabilities of the systems
3.3 Evaluation of test processes
3.4 Evaluation of constraint expressions
3.5 Automated evaluation of generalised outputs: results and conclusions
3.6 Evaluation by comparing generalised outputs: results and conclusions
3.7 Expert evaluation: results and conclusions
4. VENDORS' SOLUTIONS
4.1 Vendors' tests
4.2 Developments since 2007 and references to examples from practice
5. CONCLUSIONS AND DISCUSSION
5.1 Answers to research questions
5.2 Conclusions and further research
6. REFERENCES
7. APPENDICESNuméro de notice : H2010-003 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : GEOMATIQUE Nature : Chapître / contribution Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86301 Documents numériques
en open access
H2010-003_ State-of-the-art of automated generalisation in commercial softwareAdobe Acrobat PDF Web-based architecture for on-demand maps - integrating meaningful generalization processing / Theodor Foerster (2010)
Titre : Web-based architecture for on-demand maps - integrating meaningful generalization processing Type de document : Thèse/HDR Auteurs : Theodor Foerster, Auteur Editeur : Enschede [Pays Bas] : University of Twente Année de publication : 2010 Collection : ITC Dissertation num. 165 Importance : 193 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-90-6164-285-5 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] carte sur mesure
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] programmation par contraintes
[Termes IGN] service web géographique
[Termes IGN] web mappingRésumé : (auteur) Generating readable maps at a specific scale and for a specific use is a chal-lenge in research and practice. With the advent of the web as a platform for accessing and sharing information between users, maps also became web-accessible. The web provides the means to generate and disseminate maps for specific users (i.e. on-demand). Providing on-demand maps is considered to improve map communication. In this context, automated generalization is one solution to generate these on-demand maps.
Currently, thematic content such as physical plans becomes available on the web and displayed as maps. These maps are available as separate layers without a base map. Thereby they are in need of an on-demand base map, which might be generated regarding the thematic content and the specific user. In the case of physical planning on-demand base maps enhance the communication of the thematic content and thereby improve the communication process between the planning authorities and the public.
However, a web-based architecture to generate and disseminate on-demand base maps has not been proposed yet. Regarding the aspect of disseminating on-demand base maps on the web, the thesis investigates how to formulate user requirements towards the on-demand base map in such an environment. These user requirements are captured in so-called user profiles, which are formalized in UML and XML-models. The on-demand base map is generated according to these user profiles and according to the specific thematic content. As core of the architecture, a so-called generalization-enabled Web Map Service is presented, which consumes these user profiles and generates the base maps accordingly. The architecture is implemented as a proof-of-concept and is applied to the use case of physical planning in the Netherlands.
Besides the aim of disseminating these on-demand base maps on the web, the web is also promising to serve as a platform for web-based generalization. Such web-based processes are performed by Web Services. Establishing web-based meaningful generalization processing, the semantic interoperability of these Web Services has to be enabled, which is considered to be a challenge for research. In particular, this thesis proposes a classification of generalization operators, which is formalized in the Object Constraint Language and deployed using the Web Processing Service interface and so-called WPS profiles.
This research contributes to on-demand web mapping and to automated generalization on the web. Designing user profiles to describe generalization-specific requirements and incorporating them into a web-based architecture is a novelty for web mapping. The user profiles thereby enable the on-demand notion and are a complementary approach to the already established OGC Styled Layer Descriptor documents (for symbolization) and OGC Web Map Context (for map content definition) documents as they define user-specific issues regarding scale and the link between thematic content and the base map. Defining user profiles for the application of base maps is a novel approach in itself. Generating base maps by automated generalization has not been attempted so far. The user requirements define the thematic content as input for the generalization of the base map, which is also a novelty. The generalization-enabled WMS is the component which provides the on-demand base map in a standards-compliant way based on the specific user profile. Additionally, this research contributes to the meaningful integration of generalization processes on the web. In particular, this research contributes to the theory of automated generalization by providing a classification of generalization operators. Further, this research contributes to the issue of semantic interoperability of Web Generalization Services as it formalizes the classification using standardized data models of ISO and OGC and finally proposes the application of WPS profiles and the Object Constraint Language. Using standardized data models, this classification is extensible and comprehensible for future research. The application of WPS profiles and the Object Constraint Language is not only a novelty to generalization research and Web Generalization Services, but also contributes to the aspect of web-based geoprocessing in general.Numéro de notice : 17000 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère Note de thèse : PhD thesis : : University of Twente : 2010 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78942 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 17000-01 K325 Livre LASTIG Dépôt en unité Exclu du prêt Documents numériques
en open access
Web-based architecture for on-demand mapsAdobe Acrobat PDF Automated processing for map generation using web services / Moritz Neun in Geoinformatica, vol 13 n° 4 (December 2009)PermalinkTrois exemples d'adaptation d'un modèle générique de déformation en généralisation cartographique / Julien Gaffuri in Le monde des cartes, n° 202 (décembre 2009)PermalinkGeneralisation, semiotics and map evaluation : feedback from research done at COGIT laboratory, IGN France / Cécile Duchêne (24/11/2009)PermalinkMethodology for evaluating automated map generalization in commercial software / Jantien E. Stoter in Computers, Environment and Urban Systems, vol 33 n° 5 (September 2009)PermalinkSpecifying map requirements for automated generalization of topographic data / Jantien E. Stoter in Cartographic journal (the), vol 46 n° 3 (August 2009)PermalinkSelective omission of road features based on mesh density for automatic map generalization / J. Chen in International journal of geographical information science IJGIS, vol 23 n° 7-8 (july 2009)PermalinkA framework for the generalization of 3D city models / R. Guercke in Bulletin des sciences géographiques, n° 23 (juin 2009)PermalinkShape deformation in continuous map generalization / J. Danciger in Geoinformatica, vol 13 n° 2 (June 2009)PermalinkTechniques cartographiques : l'automatisation de la cartographie / Anne Ruas in Le monde des cartes, n° 200 (juin 2009)PermalinkA three-dimensional Douglas-Peucker algorithm and its application to automated generalization of DEMs / Fei Lifan in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)Permalink