Résultat de la recherche
2 recherche sur le mot-clé libre 'cartography'




Comparing image-based methods for assessing visual clutter in generalized maps / Guillaume Touya in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)
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[article]
Titre : Comparing image-based methods for assessing visual clutter in generalized maps Type de document : Article/Communication Auteurs : Guillaume Touya , Auteur ; Blandine Decherf, Auteur ; Mayeul Lalanne, Auteur ; Marion Dumont
, Auteur
Année de publication : 2015 Conférence : ISPRS 2015, Geospatial Week : Laserscanning, ISSDQ, CMRT, ISA, GeoVIS, GeoBigData 28/09/2015 03/10/2015 La Grande Motte France ISPRS OA Annals Article en page(s) : pp 227 - 233 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] arbre quadratique
[Termes IGN] carte dérivée
[Termes IGN] complexité de la carte
[Termes IGN] entropie
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] lisibilité perceptive
[Termes IGN] qualité de généralisation
[Vedettes matières IGN] GénéralisationMots-clés libres : Map Generalization Clutter Complexity Cartography Legibility Constraints Scale Résumé : (auteur) Map generalization abstracts and simplifies geographic information to derive maps at smaller scales. The automation of map generalization requires techniques to evaluate the global quality of a generalized map. The quality and legibility of a generalized map is related to the complexity of the map, or the amount of clutter in the map, i.e. the excessive amount of information and its disorganization. Computer vision research is highly interested in measuring clutter in images, and this paper proposes to compare some of the existing techniques from computer vision, applied to generalized maps evaluation. Four techniques from the literature are described and tested on a large set of maps, generalized at different scales: edge density, subband entropy, quad tree complexity, and segmentation clutter. The results are analyzed against several criteria related to generalized maps, the identification of cluttered areas, the preservation of the global amount of information, the handling of occlusions and overlaps, foreground vs background, and blank space reduction. Numéro de notice : A2015--056 Affiliation des auteurs : LASTIG COGIT (2012-2019) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprsannals-II-3-W5-227-2015 Date de publication en ligne : 18/08/2015 En ligne : https://doi.org/10.5194/isprsannals-II-3-W5-227-2015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83463
in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol II-3 W5 (October 2015) . - pp 227 - 233[article]Detecting level-of-detail inconsistencies in volunteered geographic information data sets / Guillaume Touya in Cartographica, vol 48 n° 2 (June 2013)
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Titre : Detecting level-of-detail inconsistencies in volunteered geographic information data sets Type de document : Article/Communication Auteurs : Guillaume Touya , Auteur ; Carmen Brando
, Auteur
Année de publication : 2013 Conférence : ICC 2013, 26th International Cartographic Conference ICA 25/08/2013 30/08/2013 Dresde Allemagne OA proceedings Article en page(s) : pp 134 - 143 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] cohérence des données
[Termes IGN] données hétérogènes
[Termes IGN] données localisées des bénévoles
[Termes IGN] inférence sémantique
[Termes IGN] niveau de détail
[Termes IGN] OpenStreetMap
[Termes IGN] visualisation cartographiqueMots-clés libres : cartography lod vgi Résumé : (Auteur) Whereas defining the level of detail (LoD) of authoritative data sets is possible, the opposite is true for volunteered geographic information (VGI), which is often characterized by heterogeneous LoDs. This heterogeneity is a curb for mapmaking, particularly when using traditional map derivation processes such as generalization. This paper proposes a method to infer the LoD of VGI features. Then, inconsistencies between features with different LoDs that get in the way of good mapmaking can be automatically identified. Some proposals are made to harmonize LoD heterogeneities. The inferring of LoDs is implemented, and results are presented on OpenStreetMap data. Numéro de notice : A2013-406 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3138/carto.48.2.1836 En ligne : https://doi.org/10.3138/carto.48.2.1836 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32544
in Cartographica > vol 48 n° 2 (June 2013) . - pp 134 - 143[article]Exemplaires(1)
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