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Automated parameterisation for multi-scale image segmentation on multiple layers / L. Drăguț in ISPRS Journal of photogrammetry and remote sensing, vol 88 (February 2014)
[article]
Titre : Automated parameterisation for multi-scale image segmentation on multiple layers Type de document : Article/Communication Auteurs : L. Drăguț, Auteur ; O. Csillik, Auteur ; C. Eisank, Auteur ; D. Tiede, Auteur Année de publication : 2014 Article en page(s) : pp 119 - 127 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse d'image orientée objet
[Termes IGN] eCognition
[Termes IGN] facteur d'échelle
[Termes IGN] résolution multiple
[Termes IGN] segmentation d'image
[Termes IGN] varianceRésumé : (Auteur) We introduce a new automated approach to parameterising multi-scale image segmentation of multiple layers, and we implemented it as a generic tool for the eCognition® software. This approach relies on the potential of the local variance (LV) to detect scale transitions in geospatial data. The tool detects the number of layers added to a project and segments them iteratively with a multi-resolution segmentation algorithm in a bottom-up approach, where the scale factor in the segmentation, namely, the scale parameter (SP), increases with a constant increment. The average LV value of the objects in all of the layers is computed and serves as a condition for stopping the iterations: when a scale level records an LV value that is equal to or lower than the previous value, the iteration ends, and the objects segmented in the previous level are retained. Three orders of magnitude of SP lags produce a corresponding number of scale levels. Tests on very high resolution imagery provided satisfactory results for generic applicability. The tool has a significant potential for enabling objectivity and automation of GEOBIA analysis. Numéro de notice : A2014-088 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.11.018 En ligne : https://doi.org/10.1016/j.isprsjprs.2013.11.018 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32993
in ISPRS Journal of photogrammetry and remote sensing > vol 88 (February 2014) . - pp 119 - 127[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2014021 RAB Revue Centre de documentation En réserve L003 Disponible Evaluating the efficiency of typographic design: Gender and expertise variation / Rasha Deeh in Cartographic journal (the), vol 51 n° 1 (February 2014)
[article]
Titre : Evaluating the efficiency of typographic design: Gender and expertise variation Type de document : Article/Communication Auteurs : Rasha Deeh, Auteur ; Kristien Ooms, Auteur ; Valérie Vanopbrocke, Auteur ; Philippe De Maeyer, Auteur Année de publication : 2014 Article en page(s) : pp 75 - 86 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique
[Termes IGN] écriture cartographique
[Termes IGN] lisibilité perceptive
[Termes IGN] placement automatique des écrituresRésumé : (Auteur) Although the efficiency of label placement algorithms has been studied extensively, few studies considered the influence of the label designs on the efficiency of map readers. Labels are one of the most important elements on the map as they can provide more information than other symbols can. The design of the labels does have to stress the theme, shape and functionality of the associated objects, which results in a more efficient interpretation of the map content by the user. How the label designs can enhance the map readers’ efficiency (and thus the quality of the maps themselves) is the main objective of this study. A user study was conducted in which the participants were asked to locate a target label on a map. Different label designs were implemented across the trials. The participants’ reactions times were registered to measure their efficiency and statistically analysed using a one-way ANOVA. Two different users’ characteristics were considered: gender and expertise. Related to the size, shape, orientation and texture of the labels, a number of significant differences (P Numéro de notice : A2014-130 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277413Y.0000000037 En ligne : https://doi.org/10.1179/1743277413Y.0000000037 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33035
in Cartographic journal (the) > vol 51 n° 1 (February 2014) . - pp 75 - 86[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2014011 RAB Revue Centre de documentation En réserve L003 Disponible Landscape preference and map readability in design evaluation of topographic maps with an orthoimage background / Paulo Raposo in Cartographic journal (the), vol 51 n° 1 (February 2014)
[article]
Titre : Landscape preference and map readability in design evaluation of topographic maps with an orthoimage background Type de document : Article/Communication Auteurs : Paulo Raposo, Auteur ; Cynthia A. Brewer, Auteur Année de publication : 2014 Article en page(s) : pp 25 - 37 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie
[Termes IGN] carte topographique
[Termes IGN] conception cartographique
[Termes IGN] estompage
[Termes IGN] lisibilité perceptive
[Termes IGN] orthoimage
[Termes IGN] réalité augmentéeRésumé : (Auteur) Orthoimagery and shaded relief are ways of introducing realism to maps, but each method presents design challenges in achieving consistently readable combinations with overlaid vector symbols and labels. Two studies were conducted to compare the readability of the current United States Geological Survey (USGS) ‘US Topo’ map series with two original designs incorporating orthoimagery and shaded relief. The studies examined reader design ratings after completing tasks that required analytical use of maps with varied map designs, using maps of diverse locations in the USA. The studies indicated that readability varied with map location to a greater degree than with map design, though design influence on ratings was detected in interaction with location. This variation with landscape is discussed from the perspective of recent theory in landscape aesthetics and preferences. Also, it was statistically demonstrated that either of the two new designs had improved readability over the existing US Topo. These studies reveal that user evaluations of maps are dependent on landscape preferences as well as on design, and demonstrate the importance of national topographic map design evaluation across a wide sample of national landscapes. Numéro de notice : A2014-127 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277412Y.0000000027 En ligne : https://doi.org/10.1179/1743277412Y.0000000027 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33032
in Cartographic journal (the) > vol 51 n° 1 (February 2014) . - pp 25 - 37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2014011 RAB Revue Centre de documentation En réserve L003 Disponible Morphometric mapping of topography by flowline hachures / Timofey Samsonov in Cartographic journal (the), vol 51 n° 1 (February 2014)
[article]
Titre : Morphometric mapping of topography by flowline hachures Type de document : Article/Communication Auteurs : Timofey Samsonov, Auteur Année de publication : 2014 Article en page(s) : pp 63 - 74 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique
[Termes IGN] automatisation
[Termes IGN] géomorphométrie
[Termes IGN] hachure
[Termes IGN] rédaction cartographique
[Termes IGN] représentation du reliefRésumé : (Auteur) Hachuring is a classic method of cartographic relief presentation that origins from perspective sketching of the surface. Hachuring was developed into strict and mathematically grounded planimetric method during the eighteenth century. Established by Lehmann in 1799, topographic hachures flourished during the first half of the nineteenth century and then were gradually replaced by contours. Today, hachures are still popular in presentation of anthropogenic relief on archaeological and topographic maps. Some elements of hachuring can be found in geomorphometric and hydrometeorological mapping, where flowlines and arrows are used to show the intensity and direction of the flow on the surface, or its aspect and slope. The study aims to reveal the potential of hachuring in further development as surface presentation method. Automated implementation of all original requirements for hachure construction is provided for the first time by new algorithm using vector flowlines. Then an advanced hachuring technique called ‘slope and aspect hachuring’ is presented which depicts slope, aspect and flow direction of the surface simultaneously. Slope and aspect hachuring is compared to traditional area colours to reveal its advantages and shortcomings in sight of morphometric mapping. Some applications of the method and directions of future research are suggested in concluding part. Numéro de notice : A2014-129 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277413Y.0000000036 En ligne : https://doi.org/10.1179/1743277413Y.0000000036 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33034
in Cartographic journal (the) > vol 51 n° 1 (February 2014) . - pp 63 - 74[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 030-2014011 RAB Revue Centre de documentation En réserve L003 Disponible Abstracting geographic information in a data rich world, ch. 2. Map specifications and user requirements / Sandrine Balley (2014)
Titre de série : Abstracting geographic information in a data rich world, ch. 2 Titre : Map specifications and user requirements Type de document : Chapitre/Contribution Auteurs : Sandrine Balley , Auteur ; Blanca Baella, Auteur ; Sidonie Christophe , Auteur ; Maria Pla, Auteur ; Nicolas Regnauld , Auteur ; Jantien E. Stoter, Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2014 Collection : Lecture notes in Geoinformation and Cartography, ISSN 1863-2246 Importance : pp 17 - 52 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] carte dérivée
[Termes IGN] carte sur mesure
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] sémiologie graphique
[Termes IGN] spécification de contenuMots-clés libres : generalization Résumé : (auteur) In traditional generalisation flow lines, the target map is specified upstream, manually, by cartographers and is intended to answer generic, well-identified user needs. In the emerging context of on-demand mapping, maps have to be derived automatically for users whose requirements are not known in advance, and who may need to integrate their own data. The definition of suitable target map specifications thus becomes part of the service, which raises challenges that are explored in this chapter. The first challenge is to set up a formal map specifications model, rich enough to guide the whole map derivation process. The second challenge is to collect requirements and to assist the user, who is not supposed to be a map designer, in the specification of a map usable for their task and one that respects cartographic standards. Numéro de notice : H2014-013 Affiliation des auteurs : LASTIG COGIT+Ext (2012-2019) Thématique : GEOMATIQUE Nature : Chapître / contribution nature-HAL : ChOuvrScient DOI : 10.1007/978-3-319-00203-3_2 Date de publication en ligne : 01/04/2014 En ligne : http://dx.doi.org/10.1007/978-3-319-00203-3_2 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78660 PermalinkLa carte à l'oeuvre / Julien Béziat (2014)PermalinkCartographie et valorisation des données de qualité des cours d’eau du bassin Seine-Normandie / Manon Cognyl (2014)PermalinkCurrent issues of perception and cognition in map design / Sidonie Christophe (25 - 28 February 2014)PermalinkFully automated generalization of a 1:50k map from 1:10k data / Jantien E. Stoter in Cartography and Geographic Information Science, vol 41 n° 1 (January 2014)PermalinkIntégration et correction automatique de données OpenStreetMap / Matthieu Baley in Géomatique expert, n° 96 (01/01/2014)PermalinkPrinciples of map design / Judith A. Tyner (2014)PermalinkPermalinkLa représentation des données géographiques / Michèle Béguin (2014)PermalinkSémiologie graphique pour la représentation des dynamiques urbaines : Identification et modélisation de connaissances pour la conception de cartes diachroniques efficaces en superposition / Cécile Remy (2014)Permalink