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Exemplaires(1)
| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
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| 030-2014041 | RAB | Revue | Centre de documentation | En réserve L003 | Disponible |
Dépouillements
Ajouter le résultat dans votre panierChanging the light azimuth in shaded relief representation by clustering aspect / Fabio Veronesi in Cartographic journal (the), vol 51 n° 4 (November 2014)
Titre : Changing the light azimuth in shaded relief representation by clustering aspect Type de document : Article/Communication Auteurs : Fabio Veronesi, Auteur ; Lorenz Hurni, Auteur Année de publication : 2014 Article en page(s) : pp 291 - 300 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique
[Termes IGN] ArcGIS
[Termes IGN] estompage automatique
[Termes IGN] ombre
[Termes IGN] représentation du relief
[Termes IGN] segmentation d'image
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Manual shading, traditionally produced manually by specifically trained cartographers, is still considered superior to automatic methods, particularly for mountainous landscapes. However, manual shading is time-consuming and its results depend on the cartographer and as such difficult to replicate consistently. For this reason there is a need to create an automatic method to standardize its results. A crucial aspect of manual shading is the continuous change of light direction (azimuth) and angle (zenith) in order to better highlight discrete landforms. Automatic hillshading algorithms, widely available in many geographic information systems (GIS) applications, do not provide this feature. This may cause the resulting shaded relief to appear flat in some areas, particularly in areas where the light source is parallel to the mountain ridge. In this work we present a GIS tool to enhance the visual quality of hillshading. We developed a technique based on clustering aspect to provide a seamless change of lighting throughout the scene. We also provide tools to change the light zenith according to either elevation or slope. This way the cartographer has more room for customizing the shaded relief representation. Moreover, the method is completely automatic and this guarantees consistent and reproducible results. This method has been embedded into an ArcGIS toolbox. Numéro de notice : A2014-641 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277414Y.0000000100 En ligne : https://doi.org/10.1179/1743277414Y.0000000100 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75086
in Cartographic journal (the) > vol 51 n° 4 (November 2014) . - pp 291 - 300[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2014041 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Exhibiting the exhibitors: spatial visualization for heterogeneous cinema venue data Type de document : Article/Communication Auteurs : Colin Arrowsmth, Auteur ; Deb Verhoeven, Auteur ; Alwyn Davidson, Auteur Année de publication : 2014 Article en page(s) : pp 301 - 302 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Australie
[Termes IGN] cartogramme
[Termes IGN] cartographie statistique
[Termes IGN] cinéma
[Termes IGN] système d'information géographique
[Termes IGN] visualisation cartographiqueRésumé : (auteur) Cinema data is characteristically complex, heterogeneous and interlinked. Rather than relying on simple information retrieval techniques, researchers are increasingly turning to the creative exploration and reapplication of data in order to more fully explore the meaning of newly available and diverse data sets. In this context, the cinema historian becomes the creator of visual texts which can be assessed for both their interpretive insight and their aesthetic qualities. This paper presents four research projects that use different spatio-temporal visualization techniques to understand the industrial dynamics of post-war film exhibition and distribution in Australia. The research integrates work by a group of inter-disciplinary investigators into the effectiveness of techniques such as dendritic mapping, Circos circular visualizations, animation, cartogram mapping, and multivariate visualization for the study of cinema circuits and operations at a number of scales. Numéro de notice : A2014-642 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277414Y.0000000096 En ligne : https://doi.org/10.1179/1743277414Y.0000000096 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75087
in Cartographic journal (the) > vol 51 n° 4 (November 2014) . - pp 301 - 302[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2014041 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Eye tracking to explore the potential of enhanced imagery basemaps in web mapping Type de document : Article/Communication Auteurs : Weihua Dong, Auteur ; Hua Liao, Auteur ; Robert Emmett Roth, Auteur ; Siyi Wang, Auteur Année de publication : 2014 Article en page(s) : pp. 313-329 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] analyse visuelle
[Termes IGN] cartographie numérique
[Termes IGN] lecture de carte
[Termes IGN] lisibilité perceptive
[Termes IGN] oculométrie
[Termes IGN] web mappingRésumé : (Auteur) The research reported here is motivated by the now ubiquitous nature of web mapping services that provide remotely sensed imagery as a basemap option. Despite the popularity of imagery basemaps, few strategies have been suggested to enhance their readability. Here, we describe a controlled experiment leveraging the eye tracking method to explore the potential of enhancing remotely sensed imagery when used for cartographic presentation. Specifically, 20 participants had their eye movements recorded as they visually searched for areas of interest in either an unmodified image (such as typical in web mapping services) or enhanced image (using image processing routines common to Remote Sensing). By interpreting the eye movement fixations and saccades of participants using a combination of qualitative and quantitative analysis, we found that the image enhancements improved both the effectiveness of and efficiency in identifying areas of interest, particularly those previously concealed in more visually complex area Numéro de notice : A2014-643 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277413Y.0000000071 En ligne : https://doi.org/10.1179/1743277413Y.0000000071 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75089
in Cartographic journal (the) > vol 51 n° 4 (November 2014) . - pp. 313-329[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2014041 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Becksploitation: the over-use of a cartographic icon Type de document : Article/Communication Auteurs : Kenneth Field, Auteur ; William Cartwright, Auteur Année de publication : 2014 Article en page(s) : pp. 343-359 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique
[Termes IGN] carte topographique
[Termes IGN] conception cartographique
[Termes IGN] créativité
[Termes IGN] histoire de la cartographie
[Termes IGN] information cartographique
[Termes IGN] Londres
[Termes IGN] sémiologie graphique
[Termes IGN] vingtième siècleRésumé : (Auteur) When one thinks of a map depicting London, generally the image that appears is that of the map designed by Henry (Harry) Beck (1902–1974). It has become a design icon despite the fact that it eschews topography (other than the River Thames) and focuses on the simplified depiction of the topology of the Underground rail network. Beck’s map, designed in 1931, and first made available to London commuters in 1933, has become the image of the geography of London and, generally, the mental map that defines how London ‘works’. Station names have become synonymous with the above-ground landscape and the network is such that most of London’s landmarks can be readily located through the map. Navigating between them is a simple process and while the city above is a socio-economic and cultural soup, the simplicity of the map brings a sense of order, structure and sensibility. It is a perfect counterpoint to the chaos at street level. In cartographic terms, Beck’s map works and marries form with function perfectly. It retains the status of ‘the’ map of London and manages to simplify the network, be harmonious, coherent, balanced and all with minimal topographic distortion. The symbols are clear and well crafted; the composition and layout, though somewhat challenged by network changes since 1933, remains useful; and the design has remained relatively unchanged over the last 80 years which creates stability in appearance and breeds confidence in its use. However, this paper asserts that Beck’s map is over-used in myriad ways beyond the reason for its invention. The effect of such abuse has perhaps been to dilute its own place in cartographic history. There have been many official iterations that have not always successfully married Beck’s design ideas with network changes; other metro maps have often tried to imitate but with mediocre success; and the map is perpetually used as a template for mimics and alternatives. The map has become a model for parody which we assert is bad for the map and potentially damaging for cartography. Numéro de notice : A2014-644 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/0008704114Z.000000000150 En ligne : https://doi.org/10.1179/0008704114Z.000000000150 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75090
in Cartographic journal (the) > vol 51 n° 4 (November 2014) . - pp. 343-359[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2014041 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Design principles for Swiss-style rock drawing Type de document : Article/Communication Auteurs : Bernhard Jenny, Auteur ; Jürg Gilgen, Auteur ; Roman Geisthövel, Auteur Année de publication : 2014 Article en page(s) : pp 360-371 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Rédaction cartographique
[Termes IGN] dessin assisté par ordinateur
[Termes IGN] dessin automatique
[Termes IGN] dessin cartographique
[Termes IGN] hachure
[Termes IGN] rocher
[Termes IGN] spécification
[Termes IGN] style cartographique
[Termes IGN] SwisstopoRésumé : (Auteur) Swiss-style rock drawing uses shaded hachures to show the characteristic forms and the third dimension of rocks and cliffs. Rock faces, trenches, gullies, faults and other rock features relevant for orientation and navigation in mountainous areas are shown as seen from the ground instead of from an orthogonal perspective. The density and dimensions of hachures change with the exposure to a source of illumination to generate a shading effect that highlights the terrain’s three-dimensionality. The generation of rock drawings in Swiss style is time-intensive and requires an eye for the artistic rendering of the terrain’s third dimension as well as an understanding of different rock types and their morphology. Design principles have not yet been documented in a detailed and comprehensive manner and only rudimentary algorithms exist for the digital generation of simplified representations. This paper discusses the defining characteristics and specific design principles of Swiss-style rock drawing based on figures and unpublished documentation from the Swiss Federal Office of Topography swisstopo. We identify three main types of hachure-based rock drawing and discuss graphical elements for the most common type. We also discuss the combination of rock drawings with contour lines, their generalisation and the drawing process. Numéro de notice : A2014-645 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/1743277413Y.0000000052 En ligne : https://doi.org/10.1179/1743277413Y.0000000052 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75091
in Cartographic journal (the) > vol 51 n° 4 (November 2014) . - pp 360-371[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 030-2014041 RAB Revue Centre de documentation En réserve L003 Disponible
