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From DLM to multi-representation DCM: modelling and application on buildings / Jenny Trévisan (2004)    

Public Titre : From DLM to multi-representation DCM: modelling and application on buildings Type de document : Article/Communication Auteurs : Jenny Trévisan, Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2004 Conférence : ICA 2004, 8th workshop, Commission on generalisation and multiple representation 20/08/2004 21/08/2004 Leicester Royaume-Uni OA Proceedings Importance : 6 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] bati [Termes IGN] généralisation cartographique automatisée [Termes IGN] modèle cartographique [Termes IGN] modèle numérique du bâti [Termes IGN] objet cartographique Résumé : (Auteur) This paper proposes a proper modelling to derive a multi-representation DCM for 1:25000 and 1:50000 scaled maps from IGN's DLM, the BDTopo®. In this study, we focus on the modelling of buildings. The data schema proposed, based on the initial DLM schema, offers the versatility to set either cartographic level free from the other: 25k objects live their own cartographic life (symbolisation and generalisation) independently from 50k objects. However, each cartographic object always knows where it comes from because of a link to a reference level, which stores the initial geographic states of all objects. This schema makes automated updates easier. In order to improve automated cartographic generalisation and updates of this DCM, we enrich this schema with a meso level of complex geographic phenomena. They allow us to describe the geographic environment of a specific object. In the case of buildings, the most common phenomenon is the urban block. This study shows how to do this enrichment while remaining consistent with the multi-representation philosophy. Numéro de notice : 13844 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Communication DOI : sans En ligne : https://kartographie.geo.tu-dresden.de/downloads/ica-gen/workshop2004/Trevisan-v [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64280

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Role of urban patterns for building generalisation: an application of Agent / Julien Gaffuri (2004)    

Public Titre : Role of urban patterns for building generalisation: an application of Agent Type de document : Article/Communication Auteurs : Julien Gaffuri , Auteur ; Jenny Trévisan, Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2004 Conférence : ICA 2004, 8th workshop, Commission on generalisation and multiple representation 20/08/2004 21/08/2004 Leicester Royaume-Uni OA Proceedings Importance : 11 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] AGENT [Termes IGN] généralisation automatique de données [Termes IGN] généralisation du bâti [Vedettes matières IGN] Généralisation Résumé : (Auteur) [introduction] [...] The AGENT prototype results from the European project AGENT ended in 2000. It is a significant progress in automatic building generalisation in urban areas, as shown in [BAR 01] and [DUC 01]. At IGN, the French mapping agency, some recent developments such as the AGENT prototype are more and more ported to map production lines: it shows the interest of production for new tools and creates new needs of development improvements. That is why some recent works in COGIT deal with urban analysis to improve contextual generalisation for 1:50000 scaled maps. This paper presents how this results have been gathered together and adapted to be integrated with the AGENT prototype. First and foremost, we will see how the geographic data have been enriched and characterized for 1:50000 generalisation. In a second part, we will remind the principles of the AGENT prototype and present how the recent works can be used to improve its results for building generalisation. Numéro de notice : 13845 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Communication DOI : sans En ligne : https://kartographie.geo.tu-dresden.de/downloads/ica-gen/workshop2004/Gaffuri-v2 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64281

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The Cartacom model : a generalisation model for taking relational constraints into account / Cécile Duchêne (2004)    

Public Titre : The Cartacom model : a generalisation model for taking relational constraints into account Type de document : Article/Communication Auteurs : Cécile Duchêne , Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2004 Conférence : ICA 2004, 8th workshop, Commission on generalisation and multiple representation 20/08/2004 21/08/2004 Leicester Royaume-Uni OA Proceedings Importance : 11 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] agent (intelligence artificielle) [Termes IGN] contrainte relationnelle [Termes IGN] généralisation cartographique automatisée [Termes IGN] objet cartographique [Termes IGN] système multi-agents [Vedettes matières IGN] Généralisation Résumé : (Auteur) [introduction] In previous papers, we presented a generalisation model relying on communicating agents. The general approach of generalisation it uses is localised, step by step, as proposed by [Brassel and Weibel 88; McMaster and Shea 88; Ruas 99]. This model, now called "CartACom" for "Cartographic generalisation with Communicating Agents", has been improved and made more generic. It still relies on communicating agents, but now it also contains a generic framework to represent cartographic constraints that concern a relation between two agents. It takes into account the operation of elimination, that requires specific management. And it finally provides a hook to handle a geographic object or group of objects by using an external generalisation process, relying on any approach of generalisation. In this paper we present the general architecture of the CartACom model and we focus on the three major improvements mentioned above. The paper is structured as follows. Part 2 briefly reminds the context and objectives of our work. Part 3 presents the CartACom model and focuses on its most recent improvements. Part 4 shows results obtained by applying the CartACom model to the generalisation of rural topographical data. Finally, part 5 concludes and draws some perspectives of this work. Numéro de notice : 13846 Affiliation des auteurs : IGN (1940-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Communication DOI : sans En ligne : https://kartographie.geo.tu-dresden.de/downloads/ica-gen/workshop2004/duchene-v2 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64282

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