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contenu dans Proceedings of 20th ICA Workshop on Generalisation and Multiple Representation / International cartographic association = association cartographique internationale (2017)
Titre : Mapping heterogeneous data: a case study on the French Green Infrastructure Type de document : Article/Communication Auteurs : Cécile Duchêne , Auteur ; Sébastien Mustière
Editeur : ICA Commission on Generalisation and Multiple Representation Année de publication : 2017 Importance : 9 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes descripteurs IGN] carte thématique
[Termes descripteurs IGN] données hétérogènes
[Termes descripteurs IGN] France (administrative)
[Termes descripteurs IGN] généralisation cartographique automatisée
[Termes descripteurs IGN] harmonisation des données
[Termes descripteurs IGN] interopérabilité
[Termes descripteurs IGN] trame verte et bleue
[Termes descripteurs IGN] utilisation du solRésumé : (auteur) To achieve a preservation and restoration of ecosystems, public environmental policies at the international level are fostering the implementation of Green Infrastructures, i.e. networks composed of areas where animal and vegetal species can live (habitat patches), and corridors to circulate between them. In France, defining existing habitat patches and corridors was ensured in a distributed manner by the Regions, the first subnational administrative level, with flexible guidelines. It resulted in very heterogeneous data in terms of level of detail, raising the question: “How to map such heterogeneous data at a supra-regional level, making them understandable while respecting the work of Regions, and with a reasonable amount of human work?”. Our study focuses on habitat patches of two adjacent Regions. After making a “rough” map directly from the provided data, we explore three ways for homogenizing the map. The first method consists in generalizing the more detailed data using simple morphologic operators. The second method consists in graphically refining the less detailed data by filling the areas with a pattern taken from the more detailed data. The third method consists in drastically changing the level of abstraction of the data on both regions, while rasterizing the space. Although it would be necessary to test the resulting maps on potential users, we think the third approach is probably the only one usable. Numéro de notice : C2017-035 Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89950 Documents numériques
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Mapping heterogeneous data ... - pdf éditeurAdobe Acrobat PDFProgressive block graying and landmarks enhancing as intermediate representations between buildings and urban areas / Guillaume Touya (2017)
contenu dans Proceedings of 20th ICA Workshop on Generalisation and Multiple Representation / International cartographic association = association cartographique internationale (2017)
Titre : Progressive block graying and landmarks enhancing as intermediate representations between buildings and urban areas Type de document : Article/Communication Auteurs : Guillaume Touya Congrès : Congrès: ICC 2017 28th International Cartographic Conference ICA (2 - 7 juillet 2017; Washington DC, Etats-Unis) Editeur : ICA Commission on Generalisation and Multiple Representation Année de publication : 2017 Importance : 10 p. Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes descripteurs IGN] analyse multicritère
[Termes descripteurs IGN] apprentissage automatique
[Termes descripteurs IGN] base de données cartographiques
[Termes descripteurs IGN] estompage automatique
[Termes descripteurs IGN] généralisation du bâti
[Termes descripteurs IGN] point de repère
[Termes descripteurs IGN] relation spatiale
[Termes descripteurs IGN] zone urbaine
[Termes descripteurs IGN] zoom
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) Geovisualization applications that allow the navigation between maps at different scales while zooming in and out often provide no smooth transition between the individual building level of abstraction and the representation of whole urban areas as polygons. In order to reduce the cognitive load of the user, we seek to add intermediate zoom levels with intermediate and progressive abstractions between buildings and urban areas. This paper proposes a method based on progressive block graying while enhancing building landmarks, to derive these intermediate representations from the individual buildings. Block graying is based on an automatic building classification, and a multiple criteria decision technique to infer inner city blocks. The landmarks identification relies on machine learning and several criteria based on geometry and spatial relations. The method is tested with real cartographic data between the 1:25k (with individual buildings) and the 1:100k scale (with urban areas): transitions with one, two, or three intermediate representations are derived and tested. Numéro de notice : C2017-007 Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86201 Documents numériques
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Progressive_Block_Graying_and_Landmarks_Enhancing - postprintAdobe Acrobat PDF
contenu dans Proceedings of 17th ICA Workshop on Generalisation and Multiple Representation / ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche) (2014)
Titre : Collaboration on an ontology for generalisation Type de document : Article/Communication Auteurs : Nick Gould, Auteur ; William A Mackaness, Auteur ; Guillaume Touya Congrès : ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche), Commanditaire Editeur : ICA Commission on Generalisation and Multiple Representation Année de publication : 2014 Importance : 9 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes descripteurs IGN] algorithme de généralisation
[Termes descripteurs IGN] cartographie collaborative
[Termes descripteurs IGN] généralisation cartographique automatisée
[Termes descripteurs IGN] ontologie
[Vedettes matières IGN] GénéralisationMots-clés libres : cartographic-knowledge ontology Résumé : (auteur) To move beyond the current plateau in automated cartography, we need greater sophistication in the process of selecting generalisation algorithms. This is particularly so in the context of machine comprehension. We also need to build on existing algorithm development instead of duplication. More broadly, we need to model the geographical context that drives the selection, sequencing and degree of application of generalisation algorithms. We argue that a collaborative effort is required to create and share an ontology for cartographic generalisation focused on supporting the algorithm selection process. The benefits of developing a collective ontology will be the increased sharing of algorithms and support for on-demand mapping and generalisation web services. Numéro de notice : C2014-011 Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : http://generalisation.icaci.org/index.php/prevevents/11-previous-events-details/ [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78486 Documents numériques
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Collaboration on an Ontology for GeneralisationAdobe Acrobat PDF
contenu dans Proceedings of 17th ICA Workshop on Generalisation and Multiple Representation / ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche) (2014)
Titre : Generalising unusual map themes from OpenStreetMap Type de document : Article/Communication Auteurs : Guillaume Touya Congrès : ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche), Commanditaire Editeur : ICA Commission on Generalisation and Multiple Representation Année de publication : 2014 Importance : 12 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes descripteurs IGN] généralisation automatique de données
[Termes descripteurs IGN] niveau de détail
[Termes descripteurs IGN] OpenStreetMap
[Termes descripteurs IGN] spécification de produitMots-clés libres : algorithms osm Résumé : (auteur) [introduction] Research on generalisation algorithms mainly focused on the most prominent themes of a topographic map, namely roads, buildings, hydrography, terrain and land use. Now that many efficient algorithms exist for such prominent themes (Stanislawski et al. 2014), minor themes like ditches (Savino et al. 2011) or swamp patches (Anderson - Tarver et al. 2011) gain interest from the research community. In OpenStreetMap (OSM), the loose specifications resulted in a large range of unusual themes, e.g. electric lines (Figure 1c), and generalising maps out of OSM data requires to handle such unusual themes. Moreover, another particularity of OSM is the very high level of detail that can be found for some features, compared to traditional geographical databases, e.g. airports, port sites (Figure 1a) or parks (Figure 1b). The unusual details contained in such areas also require specific algorithms to preserve the structure and the relations between the components. Generalising OSM data is a challenging task (Sester et al. 2014) but this paper only focuses on the generalisation of those map themes or areas exhibited in OSM. Numéro de notice : C2014-012 Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : http://generalisation.icaci.org/index.php/prevevents/11-previous-events-details/ [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78514 Documents numériques
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Generalising unusual map themes from OpenStreetMapAdobe Acrobat PDF
contenu dans Proceedings of 17th ICA Workshop on Generalisation and Multiple Representation / ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche) (2014)
Titre : Making a map from “thematically multi-sourced data”: the potential of making inter-layers spatial relations explicit Type de document : Article/Communication Auteurs : Cécile Duchêne Congrès : ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche), Auteur Editeur : ICA Commission on Generalisation and Multiple Representation Année de publication : 2014 Importance : 8 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes descripteurs IGN] carte de base
[Termes descripteurs IGN] carte thématique
[Termes descripteurs IGN] conflation
[Termes descripteurs IGN] couche thématique
[Termes descripteurs IGN] fond cartographique
[Termes descripteurs IGN] relation spatialeRésumé : (auteur) [introduction] One kind of map commonly produced from the always increasing volume of available data is made of “base” data acting as a backdrop map used for localisation purpose, on which data related to a particular theme, of interest for the user, are overlaid (Jaara et al. 2011; Moseme and van Elzakker 2012). In the rest of the paper, we call “data layer” a dataset stemming from one source (authoritative or VGI), here considered internally consistent – i.e. reliability and redundancy issues underlined by Sester et al. (2014) in the case of VGI data have been handled before. We call maps composed of several data layers (each stemming from one source), thematically multi-sourced maps. Here, we consider maps composed of two data layers: one base layer and one thematic layer. Most thematic maps have been based on this two layers principle for decades (and were multi-sourced), but they have long been made mainly by cartographic experts (Das et al. 2012). Recently, making and publishing such maps has become much easier. Their potential is huge for the users, however, the risk is huge to produce maps that are hardly legible or interpretable and can lead to bad decision making (Jaara et al. 2011; Das et al 2012; Gaffuri 2011; Balley et al. 2014; Sester et al. 2014). [...] Numéro de notice : C2014-018 Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : http://generalisation.icaci.org/index.php/prevevents/11-previous-events-details/ [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78543 Proceedings of 17th ICA Workshop on Generalisation and Multiple Representation / ICA 2014, 17th workshop on Generalisation and Multiple Representation (22 - 26 septembre 2014; Vienne, Autriche) (2014)
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