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Labelling hierarchy for street maps using centrality measures / Wasim Shoman in Cartographic journal (the), vol 55 n° 1 (February 2018)
Titre : Labelling hierarchy for street maps using centrality measures Type de document : Article/Communication Auteurs : Wasim Shoman, Auteur ; Fatih Gülgen, Auteur Année de publication : 2018 Article en page(s) : pp 68 - 84 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] axe médian
[Termes IGN] Boston (Massachusetts)
[Termes IGN] classe d'objets
[Termes IGN] écriture cartographique
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] lisibilité perceptive
[Termes IGN] placement automatique des écritures
[Termes IGN] processus de hiérarchisation analytique floue
[Termes IGN] représentation multiple
[Termes IGN] réseau routier
[Termes IGN] route
[Termes IGN] Styled Layer Descriptor
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) This paper proposes a compound hierarchy to be used in cartographic labelling of streets. The main purposes of this hierarchy are to ease navigation of street maps and to provide more understandability and legibility of street features for map users. The hierarchy uses centrality measures along with functional classes of the streets to order features according to their spatial importance in each used zoom level. The calculation of a proper radius, to be employed in the calculations of centrality measures, is based on extracting proper field of view in the map user’s focus status. The used measures are integrated using fuzzy-analytic hierarchy process, yielding proper coefficients to create the hierarchy. The hierarchy is applied for the thinning process and later for using the styled layer descriptor to label street features. Quality constrains are implemented to make the street labels more understandable and readable. Numéro de notice : A2018-257 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/00087041.2017.1323151 Date de publication en ligne : 19/05/2017 En ligne : https://doi.org/10.1080/00087041.2017.1323151 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90325
in Cartographic journal (the) > vol 55 n° 1 (February 2018) . - pp 68 - 84[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2018011 RAB Revue Centre de documentation En réserve L003 Disponible
contenu dans ICC 2017, the 28th International Cartographic Conference, à Washington, USA, 2–7 July 2017, proceedings / International cartographic association = association cartographique internationale (2017)
Titre : Expressive map design: OGC SLD/SE++ extension for expressive map styles Type de document : Article/Communication Auteurs : Sidonie Christophe Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2017 Conférence : ICC 2017, 28th International Cartographic Conference ICA 02/07/2017 07/07/2017 Washington DC Etats-Unis OA Proceedings of the ICA Importance : 35 p. Langues : Français (fre) Descripteur : [Termes IGN] couleur (rédaction cartographique)
[Termes IGN] interpolation
[Termes IGN] métadonnées
[Termes IGN] Open geospatial consortium
[Termes IGN] rendu (géovisualisation)
[Termes IGN] représentation cartographique 3D
[Termes IGN] style cartographique
[Termes IGN] Styled Layer Descriptor
[Termes IGN] symbole graphique
[Termes IGN] symbology encoding
[Termes IGN] visualisation 3D
[Vedettes matières IGN] GéovisualisationRésumé : (Auteur) In the context of the personalization of map design, cartographic needs have been highlighted considering the handling of more artistic and expressive tools, in order to design stylized and expressive maps, in existing cartographic pipelines. Based on previous works on style formalization, an approach of the specification of the style of a map has been proposed and experimented for some use cases. A first step concerns the analysis of inspiration sources, in order to extract "what does make the style of the source"™, i.e. the salient visual characteristics to be automatically reproduced (textures, spatial arrangements, linear stylization, etc.). In order to mimic and generate those visual characteristics, existing and innovative rendering techniques have been implemented in our GIS engine, thus extending the capabilities to generate expressive renderings. Therefore, an extension of the existing cartographic pipeline has been proposed based on the following aspects: 1- extension of the symbolization specifications OGC SLD/SE in order to provide a formalism to specify new types of Symbolizers and their related rendering methods; 2- separate specification of each rendering method and its parametrization, as metadata. The main contribution has been described in (Christophe et al. 2016). We focus here on the extension of the cartographic pipeline (SLD++ and metadata) and the diversity of map design capabilities that have been experimented for many topographic styles: old cartographic styles (Cassini), artistic styles (watercolor, impressionism, Japanese print), hybrid topographic styles (ortho-imagery & vector data) and finally abstract and photo-realist styles for the geovisualization of costal area. The genericity and interoperability of the approach is promising and has already been tested for 3D visualization. Numéro de notice : C2017-011 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.5194/ica-proc-1-21-2018 Date de publication en ligne : 31/07/2017 En ligne : https://doi.org/10.5194/ica-proc-1-21-2018 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86223 Documents numériques
en open access
Expressive map design - pdf éditeurAdobe Acrobat PDF
Titre : A function-based linear map symbol building and rendering method using shader language Type de document : Article/Communication Auteurs : Songshan Yue, Auteur ; Jianshun Yang, Auteur ; Min Chen, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 143 - 167 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] communication cartographique
[Termes IGN] détail topographique
[Termes IGN] figuré linéaire
[Termes IGN] rendu réaliste
[Termes IGN] route
[Termes IGN] signe conventionnel
[Termes IGN] Styled Layer Descriptor
[Termes IGN] symbole graphique
[Termes IGN] visée oblique
[Vedettes matières IGN] CartologieRésumé : (auteur) Maps are widely used to visualize geo-information so that map users can develop related understandings about the real world. Such a process for communicating information is largely dependent on the rendering of map elements using different symbols (points and linear and area symbols). To meet the demand of more dynamic and comprehensive visualization in map rendering, it is essential to improve the rendering efficiency. This paper focuses on these research topics, especially the difficulty in constructing and drawing linear map symbols. By employing shader language, a function-based linear symbol building and rendering method is presented in this paper. The basic idea of this function-based method is to build a map-rendering solution that employs graphic processing unit (GPU) acceleration technology to improve the rendering efficiency. A ‘function’ is used to represent the algorithm that draws certain simple or complex linear map symbols. This function reflects the structure of a linear map symbol (describing the symbol construction information) and also the rendering process of the symbolized linear map elements (handled on a per-pixel basis by the shader program). Based on the Open Geospatial Consortium (OGC), Styled Layer Descriptor (SLD) specifications, four basic line types (i.e., solid lines, dashed lines, gradient color lines, and transition lines) are implemented in the proposed method, and the implementation of line markers, line joins and line caps is also discussed. Three experiments are conducted to demonstrate improvements in map rendering. The results show that a variety of linear map symbols can be constructed in a uniform way, which suggests that the proposed method addresses the difficulty in drawing linear map symbols. With this method, the efficiency of rendering linear map elements is substantially improved compared to using the graphics device interface plus (GDI+) and anti-grain geometry (AGG) methods; it also provides an applicable approach for developing map rendering systems. Using this function-based concept, the complexity of building linear map symbols and drawing linear map elements can be decreased. Numéro de notice : A2016-086 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1077964 En ligne : https://doi.org/10.1080/13658816.2015.1077964 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79871
in International journal of geographical information science IJGIS > vol 30 n° 1-2 (January - February 2016) . - pp 143 - 167[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 079-2016011 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Map style formalization: Rendering techniques extension for cartography Type de document : Article/Communication Auteurs : Sidonie Christophe Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2016 Projets : Mapstyle / Christophe, Sidonie Conférence : Expressive 2016, Joint Symposium on Computational Aesthetics and Sketch-Based Interfaces and Modeling and Non-Photorealistic Animation and Rendering 07/05/2016 09/05/2016 Lisbonne Portugal Proceedings ACM Importance : 12 p. Format : 21 x 30 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] chaîne de traitement
[Termes IGN] conception cartographique
[Termes IGN] sémiologie graphique
[Termes IGN] style cartographique
[Termes IGN] Styled Layer Descriptor
[Termes IGN] symbology encoding
[Termes IGN] texturage
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) Cartographic design requires controllable methods and tools to produce maps that are adapted to users’ needs and preferences. The formalized rules and constraints for cartographic representation come mainly from the conceptual framework of graphic semiology. Most current Geographical Information Systems (GIS) rely on the Styled Layer Descriptor and Semiology Encoding (SLD/SE) specifications which provide an XML schema describing the styling rules to be applied on geographic data to draw a map. Although this formalism is relevant for most usages in cartography, it fails to describe complex cartographic and artistic styles. In order to overcome these limitations, we propose an extension of the existing SLD/SE specifications to manage extended map stylizations, by the means of controllable expressive methods. Inspired by artistic and cartographic sources (Cassini maps, mountain maps, artistic movements, etc.), we propose to integrate into our system three main expressive methods: linear stylization, patch-based region filling and vector texture generation. We demonstrate how our pipeline allows to personalize map rendering with expressive methods in several examples. Numéro de notice : C2016-060 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl En ligne : https://hal.archives-ouvertes.fr/hal-01317403/document Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91919
Titre : Use of SLD by the ELF project [diaporama] Type de document : Article/Communication Auteurs : Dominique Laurent Editeur : Paris [France] : Centre national de l'information géographique CNIG Année de publication : 2016 Conférence : EU conference INSPIRE 2016 26/09/2016 30/09/2016 Barcelone Espagne OA Proceedings Importance : 19 p. Format : Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] couche thématique
[Termes IGN] Europe (géographie politique)
[Termes IGN] INSPIRE
[Termes IGN] représentation des données
[Termes IGN] Styled Layer DescriptorRésumé : (auteur) The European Location Framework (ELF) project aims to provide harmonised, INSPIRE-based data from NMCAs. Based on this harmonised data, ELF has designed several view products using SLD standard, namely the Administrative BaseMap, the Topographic BaseMap and the Cadastral Index Map. In addition, ELF has transformed the INSPIRE documentation about portrayal into operational Style Layer Descriptor (SLD) files. The SLD standard is composed of two parts: the filter that defines the feature type and selection criteria to be used in the layer and the portrayal rules themselves (symbol, applicable scales, positioning rules for labels). When designing a view product, the first phase is obviously to design the SLD file. First difficulty was the complex data model of some INSPIRE themes (especially Transport Network), considered as not convenient for the selection criteria aiming to define the layers: choice was made to use simplified models derived from the INSPIRE. Then, it should be decided how to design the SLD file; e.g. for the Administrative BaseMap, the selection criteria and portrayal rules were elaborated using QGIS and then exported as SLD but some manual work remained to deal with the labels. The ELF project has developed an SLD editor tool that facilitates the modification of existing SLD files- regarding the portrayal rules. The second phase is the use of SLD when implementing view services. In general, the SLD standard has been a very useful tool in the ELF context, especially for the view products using a decentralised production process: the Topographic BaseMap and the Cadastral Index Map are based on national WMS set up by various NMCAs using different implementation solutions, such as Map Server, GeoServer, ArcGIS server, Intergraph WebMapServer. Globally, the use of SLD standard has enabled data providers to get (relatively) homogeneous rendering in a multiple actors, multiple tools -and multiple versions context. However, some difficulties remain: for instance, the SLD file has to be adapted for some implementation solutions, e.g. to be transformed into MapFiles for Map Server. In addition, it is difficult to fully specify the label process within the SLD and significant part of the work is up to the implementation solution. In conclusion, the SLD standard has really empowered ELF to design its view products; it has proved to be good enough regarding the (simple) symbols to be applied to features but there remain some progress to be done regarding the label process. Numéro de notice : C2016-010 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComSansActesPubliés-Unpublished DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82195 Documents numériques
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Use of SLD by the ELF project - diaporama auteurAdobe Acrobat PDFÉtude des possibilités de mise en place d'un ensemble interconnecté de serveurs cartographiques et de bases de données géographiques / F. Moraux (2007)
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