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Multi-agents systems for cartographic generalization: Feedback from past and on-going research / Cécile Duchêne (2018)
Titre : Multi-agents systems for cartographic generalization: Feedback from past and on-going research Type de document : Rapport Auteurs : Cécile Duchêne , Auteur ; Guillaume Touya , Auteur ; Patrick Taillandier , Auteur ; Julien Gaffuri , Auteur ; Anne Ruas , Auteur ; Jérémy Renard , Auteur Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2018 Importance : 19 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] généralisation cartographique automatisée
[Termes IGN] modèle (conceptuel) de généralisation
[Termes IGN] système multi-agents
[Vedettes matières IGN] GénéralisationRésumé : (auteur) Cartographic generalization is a highly local and contextual process where decisions are taken locally to better adjust the transformations used to the local geography. Thus, cartographic generalization fits well with the multi-agents paradigm that promotes decentralized and autonomous decision-making. The past years of research in cartographic generalization showed several successful attempts to use multi-agents systems, and this paper provides a feedback on these attempts. We extracted a core modeling of a multi-agents system for generalization and highlighted its main components. Previous propositions of multi-agents generalization processes are described in relation to this core modeling, and feedbacks from experimentations with these processes are discussed to define a research agenda in multi-agents modeling for generalization. Note de contenu : 1- Introduction
2- From Step by Step, Knowledge Based Approaches to Multi-Agent Approaches
3- Components of a Multi-Agent Based Generalization Model
4- Implementations of the Multi-Agent Approach in Generalization at IGN
5- Discussion - Feedback from experimentations
6- ConclusionNuméro de notice : 17522 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Rapport de recherche nature-HAL : RappRech DOI : sans En ligne : https://hal.archives-ouvertes.fr/hal-01682131/document Format de la ressource électronique : vers HAL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90541 Documents numériques
en open access
Multi-agents systems for cartographic generalization - pdf auteurAdobe Acrobat PDF Centrality-based hierarchy for street network generalization in multi-resolution maps / Wasim Shoman in Geocarto international, vol 32 n° 12 (December 2017)
[article]
Titre : Centrality-based hierarchy for street network generalization in multi-resolution maps Type de document : Article/Communication Auteurs : Wasim Shoman, Auteur ; Fatih Gülgen, Auteur Année de publication : 2017 Article en page(s) : pp 1352 - 1366 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] axe médian
[Termes IGN] base de données multi-représentation
[Termes IGN] extraction de traits caractéristiques
[Termes IGN] généralisation automatique de données
[Termes IGN] graphe
[Termes IGN] processus de hiérarchisation analytique floue
[Termes IGN] réseau routier
[Termes IGN] route
[Termes IGN] zoom
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) This paper introduces a new hierarchy for cartographic generalisation processes, applied in street networks. The aims of implementing this hierarchy are to emphasise on significant street features, and to provide more free spaces between street features. The hierarchy is obtained from the functional classes of the features and four centrality measures in a street network, i.e. betweenness, reach, straightness and closeness extracted from a primary graph. The values of centrality measures change in every zoom level by calculating a radius parameter, which depends on the users’ field of view. The coefficients for the measures are constructed using a decision-making technique called fuzzy analytical hierarchy process (FAHP). The weights for each of the centrality measures are computed and normalised to form the proposed hierarchy. The hierarchy is applied and used later in the thinning process to omit insignificant features from the street network in medium scales. Numéro de notice : A2017-673 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2016.1208683 En ligne : https://doi.org/10.1080/10106049.2016.1208683 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87164
in Geocarto international > vol 32 n° 12 (December 2017) . - pp 1352 - 1366[article]Partial polygon pruning of hydrographic features in automated generalization / Alexander K. Stum in Transactions in GIS, vol 21 n° 5 (October 2017)
[article]
Titre : Partial polygon pruning of hydrographic features in automated generalization Type de document : Article/Communication Auteurs : Alexander K. Stum, Auteur ; Barbara P. Buttenfield, Auteur ; Lauwrence V. Stanislawski, Auteur Année de publication : 2017 Article en page(s) : pp 1061–1078 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] base de données hydrographiques
[Termes IGN] détection automatique
[Termes IGN] Etats-Unis
[Termes IGN] généralisation automatique de données
[Termes IGN] petite échelle
[Termes IGN] polygone
[Termes IGN] rendu (géovisualisation)
[Termes IGN] simplification de contour
[Termes IGN] traitement automatique de données
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) This article demonstrates a working method to automatically detect and prune portions of waterbody polygons to support creation of a multi-scale hydrographic database. Water features are sensitive to scale change, therefore multiple representations are required to maintain visual and geographic logic at smaller scales. Partial pruning of polygonal features – such as long, sinuous reservoir arms, stream channels too narrow at the target scale, and islands that begin to coalesce – entails concurrent management of the length and width of polygonal features as well as integrating pruned polygons with other generalized point and linear hydrographic features to maintain stream network connectivity. The implementation follows data representation standards developed by the US Geological Survey (USGS) for the National Hydrography Dataset (NHD). Portions of polygonal rivers, streams, and canals are automatically characterized for width, length, and connectivity. This article describes an algorithm for automatic detection and subsequent processing, and shows results for a sample of NHD subbasins in different landscape conditions in the US. Numéro de notice : A2017-634 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12270 En ligne : http://dx.doi.org/10.1111/tgis.12270 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86953
in Transactions in GIS > vol 21 n° 5 (October 2017) . - pp 1061–1078[article]BinSq : visualizing geographic dot density patterns with gridded maps / Alvin Chua in Cartography and Geographic Information Science, Vol 44 n° 5 (September 2017)
[article]
Titre : BinSq : visualizing geographic dot density patterns with gridded maps Type de document : Article/Communication Auteurs : Alvin Chua, Auteur ; Andrew Vande Moere, Auteur Année de publication : 2017 Article en page(s) : pp 390 - 409 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] carte de répartition par points
[Termes IGN] déplacement d'objet géographique
[Termes IGN] données localisées
[Termes IGN] généralisation cartographique
[Termes IGN] grille
[Termes IGN] visualisation de données
[Vedettes matières IGN] GéovisualisationRésumé : (Auteur) Dot maps have become a popular way to visualize discrete geographic data. Yet, beyond showing how the data are spatially distributed, dot maps are often visually cluttered in terms of consistency, overlap, and representativeness. Existing clutter reduction techniques like jittering, refinement, distortion, and aggregation also address this issue, but do so by arbitrarily displacing dots from their exact location, removing dots from the map, changing the spatial reference of the map, or reducing its level of detail, respectively. We present BinSq, a novel visualization technique to compare variations in dot density patterns without visual clutter. Based on a careful synthesis of existing clutter reduction techniques, BinSq reduces the wide variety of dot density variations on the map to a representative subset of density intervals that are more distinguishable. The subset is derived from a nested binning operation that introduces order and regularity to the map. Thereafter, a dot prioritization operation improves the representativeness of the map by equalizing visible data values to correspond with the actual data. In this paper, we describe the algorithmic implementation of BinSq, explore its parametric design space, and discuss its capabilities in comparison to six existing clutter reduction techniques for dot maps. Numéro de notice : A2017-448 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2016.1174623 En ligne : http://dx.doi.org/10.1080/15230406.2016.1174623 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86357
in Cartography and Geographic Information Science > Vol 44 n° 5 (September 2017) . - pp 390 - 409[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 032-2017051 RAB Revue Centre de documentation En réserve L003 Disponible Shape-adaptive geometric simplification of heterogeneous line datasets / Timofey Samsonov in International journal of geographical information science IJGIS, vol 31 n° 7-8 (July - August 2017)
[article]
Titre : Shape-adaptive geometric simplification of heterogeneous line datasets Type de document : Article/Communication Auteurs : Timofey Samsonov, Auteur ; Olga P. Yakimova, Auteur Année de publication : 2017 Article en page(s) : pp 1485 - 1520 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] algorithme de Douglas-Peucker
[Termes IGN] données hétérogènes
[Termes IGN] généralisation automatique de données
[Termes IGN] généralisation cartographique
[Termes IGN] limite administrative
[Termes IGN] objet géographique linéaire
[Termes IGN] simplification de contour
[Termes IGN] traitement de données
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) Line generalization is an essential data processing operation in geographic information systems and cartography. Many point reduction and simplification algorithms have been developed for this purpose. During the last three decades, several attempts have been made to develop approaches of generalization that adapt to the geometric properties of the processed lines. They typically incorporate line segmentation based on quantitative descriptions of the line shape. Little attention has been paid to the cases in which heterogeneous lines of different geometric character are mixed in one dataset. One common example is administrative borders, which often contain natural and artificial, smooth and sharp, schematic and non-schematic, and regular and irregular shapes. The tuning of the simplification algorithm based on a quantitative description of the shape would be ineffective here, since different algorithms must be applied to lines of different characters. In this article, we present a general method and generalization model for the simplification of such datasets. The properties of schematism, smoothness and regularity are used to differentiate various line characters. Three line characters, including irregular non-schematic, irregular schematic and regular orthogonal schematic, were selected for the current study. The developed generalization model consists of preprocessing, processing and postprocessing stages. Line segmentation based on the detection of different characters is performed during the preprocessing stage. Then, Li–Openshaw, Douglas–Peucker and orthogonal simplification are applied to the appropriate segments in the processing stage. Postprocessing enables the addition of extra regularity to the simplified shape. A visual and quantitative assessment of the results is provided and demonstrates the effectiveness of the developed approach in comparison with the global application of a single simplification algorithm. Numéro de notice : A2017-309 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2017.1306864 En ligne : http://dx.doi.org/10.1080/13658816.2017.1306864 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85356
in International journal of geographical information science IJGIS > vol 31 n° 7-8 (July - August 2017) . - pp 1485 - 1520[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2017041 RAB Revue Centre de documentation En réserve L003 Disponible 079-2017042 RAB Revue Centre de documentation Revues en salle Disponible DIOGEN, a multi-level oriented model for cartographic generalization / Adrien Maudet in International journal of cartography, vol 3 n° 1 (June 2017)PermalinkThe bounds of distortion : truth, meaning and efficacy in digital geographic representation / Lucas Godfrey in International journal of cartography, vol 3 n° 1 (June 2017)PermalinkVariable-scale maps in real-time generalisation using a quadtree data structure and space deforming algorithms / Pia Bereuter in International journal of cartography, vol 3 n° 1 (June 2017)PermalinkA method for assessing generalized data accuracy with linear object resolution verification / Tadeusz Chrobak in Geocarto international, vol 32 n° 3 (March 2017)PermalinkEuroSDR contributions to ISPRS Congress XXIII, 12 - 19 July 2016, Special Session 12 – EuroSDR Prague, Czech Republic / European Spatial Data Research EuroSDR (02/2017)PermalinkPermalinkCitizen empowered mapping, ch. 1. Level of details harmonization operations in OpenStreetMap based large scale maps / Guillaume Touya (2017)PermalinkPermalinkPermalinkThe International Encyclopedia of Geography: People, The Earth, Environment, and Technology, ch. Map Generalization / William A Mackaness (2017)Permalink