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Proxemic maps for immersive visualization / Zeinab Ghaemi in Cartography and Geographic Information Science, vol 49 n° 3 (May 2022)  

Public [article]  inCartography and Geographic Information Science > vol 49 n° 3 (May 2022) Titre : Proxemic maps for immersive visualization Type de document : Article/Communication Auteurs : Zeinab Ghaemi, Auteur ; Ulrich Engelke, Auteur ; Barrett Ens, Auteur ; Bernhard Jenny, Auteur Année de publication : 2022 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] immersion [Termes IGN] programme interactif [Termes IGN] projection [Vedettes matières IGN] Géovisualisation Résumé : (auteur) In human computer interaction, proxemics describes the ways that people use space to interact with other people or objects. We focus on proxemic maps, which are virtual maps in immersive environments that react to proxemic interaction. Proxemic maps take advantage of new opportunities brought about by immersive visualization, where virtual maps can be freely positioned in virtual or physical space and adapt themselves relative to the spatial position of the viewer. We discuss proxemic interactions that alter the content and type of maps, including changing scale, symbolization, type of visualization and geometry. We propose a novel transformation that changes the geometry of maps based on their proximity to users. Users move the map back and forth and the map transitions between ring, horizontal, vertical and cylindrical geometries. The ring geometry surrounds the user and aligns features on the map with features in the real world. We implemented the map transformation in virtual reality and conducted a user study to evaluate it. The results of the user study indicate that participants preferred the ring and horizontal geometries. The ring geometry is useful because it simplifies connecting virtual features on the map with real features in the landscape, while the horizontal geometry provides an overall view of the landscape. We further found that combination of different geometries helped the study participants to overcome the limitations of each geometry. Numéro de notice : A2022-142 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/15230406.2021.2013946 Date de publication en ligne : 24/01/2022 En ligne : https://doi.org/10.1080/15230406.2021.2013946 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99961 [article]

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Elevation models for reproducible evaluation of terrain representation / Patrick Kennelly in Cartography and Geographic Information Science, vol 48 n° 1 (January 2021)  

Public [article]  inCartography and Geographic Information Science > vol 48 n° 1 (January 2021) . - pp 63 - 77 Titre : Elevation models for reproducible evaluation of terrain representation Type de document : Article/Communication Auteurs : Patrick Kennelly, Auteur ; Tom Patterson, Auteur ; Bernhard Jenny, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : pp 63 - 77 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] altitude [Termes IGN] données multiéchelles [Termes IGN] figuré du terrain [Termes IGN] modèle numérique de surface [Termes IGN] réalité de terrain [Termes IGN] relief [Termes IGN] représentation du relief [Termes IGN] reproductibilité [Termes IGN] visualisation de données Résumé : (auteur) This paper proposes elevation models to promote, evaluate, and compare various terrain representation techniques. Our goal is to increase the reproducibility of terrain rendering algorithms and techniques across different scales and landscapes. We introduce elevation models of varying terrain types, available to the user at no cost, with minimal common data imperfections such as missing data values, resampling artifacts, and seams. Three multiscale elevation models are available, each consisting of a set of elevation grids, centered on the same geographic location, with increasing cell sizes and spatial extents. We also propose a collection of single-scale elevation models of archetypal landforms including folded ridges, a braided riverbed, active and stabilized sand dunes, and a volcanic caldera. An inventory of 78 publications with a total of 155 renderings illustrating terrain visualization techniques guided the selection of landform types in the elevation models. The benefits of using the proposed elevation models include straightforward comparison of terrain representation methods across different publications and better documentation of the source data, which increases the reproducibility of terrain representations. Numéro de notice : A2021-715 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/15230406.2020.1830856 Date de publication en ligne : 04/11/2020 En ligne : https://doi.org/10.1080/15230406.2020.1830856 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96459 [article]

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The Equal Earth map projection / Bojan Šavrič in International journal of geographical information science IJGIS, Vol 33 n° 3-4 (March - April 2019)  

Public [article]  inInternational journal of geographical information science IJGIS > Vol 33 n° 3-4 (March - April 2019) . - pp 454 - 465 Titre : The Equal Earth map projection Type de document : Article/Communication Auteurs : Bojan Šavrič, Auteur ; Tom Patterson, Auteur ; Bernhard Jenny, Auteur Année de publication : 2019 Article en page(s) : pp 454 - 465 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections [Termes IGN] carroyage géographique [Termes IGN] mappemonde [Termes IGN] projection (équivalente) de Mollweide [Termes IGN] projection de Peters [Termes IGN] projection de Robinson [Termes IGN] projection sinusoïdale Résumé : (auteur) The Equal Earth map projection is a new equal-area pseudocylindrical projection for world maps. It is inspired by the widely used Robinson projection, but unlike the Robinson projection, retains the relative size of areas. The projection equations are simple to implement and fast to evaluate. Continental outlines are shown in a visually pleasing and balanced way. Numéro de notice : A2019-023 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2018.1504949 Date de publication en ligne : 07/08/2018 En ligne : https://doi.org/10.1080/13658816.2018.1504949 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91951 [article]

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Enhancing adaptive composite map projections: Wagner transformation between the Lambert azimuthal and the transverse cylindrical equal-area projections / Bernhard Jenny in Cartography and Geographic Information Science, Vol 45 n° 5 (August 2018)  

Public [article]  inCartography and Geographic Information Science > Vol 45 n° 5 (August 2018) . - pp 456 - 463 Titre : Enhancing adaptive composite map projections: Wagner transformation between the Lambert azimuthal and the transverse cylindrical equal-area projections Type de document : Article/Communication Auteurs : Bernhard Jenny, Auteur ; Bojan Šavrič, Auteur Année de publication : 2018 Article en page(s) : pp 456 - 463 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Projections [Termes IGN] cartographie dynamique [Termes IGN] projection azimutale équivalente de lambert [Termes IGN] projection conique [Termes IGN] projection cylindrique Résumé : (Auteur) The adaptive composite map projection technique changes the projection to minimize distortion for the geographic area shown on a map. This article improves the transition between the Lambert azimuthal projection and the transverse equal-area cylindrical projection that are used by adaptive composite projections for portrait-format maps. Originally, a transverse Albers conic projection was suggested for transforming between these two projections, resulting in graticules that are not symmetric relative to the central meridian. We propose the alternative transverse Wagner transformation between the two projections and provide equations and parameters for the transition. The suggested technique results in a graticule that is symmetric relative to the central meridian, and a map transformation that is visually continuous with changing map scale. Numéro de notice : A2018-273 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/MATHEMATIQUE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/15230406.2017.1379036 Date de publication en ligne : 02/10/2017 En ligne : https://doi.org/10.1080/15230406.2017.1379036 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90339 [article]

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Force-directed layout of origin-destination flow maps / Bernhard Jenny in International journal of geographical information science IJGIS, vol 31 n° 7-8 (July - August 2017)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 31 n° 7-8 (July - August 2017) . - pp 1521 - 1540 Titre : Force-directed layout of origin-destination flow maps Type de document : Article/Communication Auteurs : Bernhard Jenny, Auteur ; Daniel M. Stephen, Auteur ; Ian Muehlenhaus, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 1521 - 1540 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique [Termes IGN] cartographie des flux [Termes IGN] chevauchement [Termes IGN] conception cartographique [Termes IGN] courbe de Bézier [Termes IGN] origine - destination Résumé : (Auteur) This paper introduces a force-directed layout method for creating origin-destination flow maps. Design principles derived from manual cartography and automated graph drawing to increase readability of flow maps and graph layouts are taken into account. The origin-destination flow maps produced with our algorithm show flows with quadratic Bézier curves that reduce flow-on-flow and flow-on-node overlaps, and avoid sharp or irregular bends in flow lines. A survey of expert cartographers found that flow maps created with our automated method are similar in quality to manually produced flow maps. Numéro de notice : A2017-310 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2017.1307378 En ligne : http://dx.doi.org/10.1080/13658816.2017.1307378 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85357 [article]

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Interactive shearing for terrain visualization : an expert study / Jonas Buddeberg in Geoinformatica, vol 21 n° 3 (July - September 2017)  

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Projection Wizard – An online map projection selection tool / Bojan Šavrič in Cartographic journal (the), Vol 53 n° 2 (May 2016)  

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Plan oblique relief for web maps / Bernhard Jenny in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

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User preferences for world map projections / Bojan Šavrič in Cartography and Geographic Information Science, Vol 42 n° 5 (November 2015)  

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Design principles for Swiss-style rock drawing / Bernhard Jenny in Cartographic journal (the), vol 51 n° 4 (November 2014)  

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Blending world map projections with Flex Projector / Bernhard Jenny in Cartography and Geographic Information Science, vol 40 n° 4 (September 2013)  

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Challenges in adapting example-based texture synthesis for panoramic map creation: a case study / Helen Jenny in Cartography and Geographic Information Science, vol 40 n° 4 (September 2013)  

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Cartographic Design and Aesthetics “FAQ” / Alexander J. Kent in Cartographic perspectives, n° 73 (september 2012)  

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Graphical design of world map projections / Bernhard Jenny in International journal of geographical information science IJGIS, vol 24 n°11-12 (december 2010)  

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Interactive design of 3D maps with progressive projection / Helen Jenny in Cartographic journal (the), vol 47 n° 3 (August 2010)  

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