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

Public [article]  inGeoinformatica > vol 21 n° 3 (July - September 2017) . - pp 643 - 665 Titre : Interactive shearing for terrain visualization : an expert study Type de document : Article/Communication Auteurs : Jonas Buddeberg, Auteur ; Bernhard Jenny, Auteur ; Wesley Willett, Auteur Année de publication : 2017 Article en page(s) : pp 643 - 665 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] animation graphique [Termes IGN] carte topographique [Termes IGN] extraction de traits caractéristiques [Termes IGN] extraction du relief [Termes IGN] figuré du terrain [Termes IGN] implémentation (informatique) [Termes IGN] lecture de carte [Termes IGN] test de performance [Termes IGN] visualisation 3D [Termes IGN] web mapping Résumé : (Auteur) Interpreting terrain in traditional 2D maps can be challenging. However, recent work has shown how interactive shearing of terrain can help users better understand topography and extract elevation information from a map. Using this approach, user input – paired with existing interactions such as pan and zoom – triggers brief ephemeral shearing animations that expose depth and shape information in terrain maps. The animations use motion to enhance the perception of depth and convey the impression of a shaking jelly model that oscillates until it comes to rest. However, it is still unclear how the parameters of these animations impact the effectiveness of the method or if the animations may have negative side effects. Moreover, it is unknown whether interactive relief shearing is accessible enough to be used in common web maps. To investigate these questions, we conducted a user study with 49 cartographers and visualization experts. These experts interactively configured shearing animations and assessed the technique’s usability and applicability. To create a platform for the user study and demonstrate that interactive shearing of terrain is technically feasible in browsers, we implemented a web map with interactive shearing animations. All experts found that interactive relief shearing made it easier to see differences in elevation on orthophoto maps. Future web maps could include shearing animations, making it easier for viewers to interpret terrain and see differences in elevation. Numéro de notice : A2017-385 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-016-0283-9 En ligne : https://doi.org/10.1007/s10707-016-0283-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85818 [article]