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Cartography-oriented design of 3D geospatial information visualization – overview and techniques / Amir Semmo in Cartographic journal (the), Vol 52 n° 2 (May 2015)
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Titre : Cartography-oriented design of 3D geospatial information visualization – overview and techniques Type de document : Article/Communication Auteurs : Amir Semmo, Auteur Année de publication : 2015 Article en page(s) : pp 95 - 106 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] carte interactive
[Termes IGN] conception cartographique
[Termes IGN] iconographie
[Termes IGN] réalité virtuelle
[Termes IGN] sémiologie graphique
[Termes IGN] temps réel
[Termes IGN] visualisation 3D
[Vedettes matières IGN] GéovisualisationRésumé : (Auteur) In economy, society and personal life map-based interactive geospatial visualization becomes a natural element of a growing number of applications and systems. The visualization of 3D geospatial information, however, raises the question how to represent the information in an effective way. Considerable research has been done in technology-driven directions in the fields of cartography and computer graphics (e.g., design principles, visualization techniques). Here, non-photorealistic rendering (NPR) represents a promising visualization category – situated between both fields – that offers a large number of degrees for the cartography-oriented visual design of complex 2D and 3D geospatial information for a given application context. Still today, however, specifications and techniques for mapping cartographic design principles to the state-of-the-art rendering pipeline of 3D computer graphics remain to be explored. This paper revisits cartographic design principles for 3D geospatial visualization and introduces an extended 3D semiotic model that complies with the general, interactive visualization pipeline. Based on this model, we propose NPR techniques to interactively synthesize cartographic renditions of basic feature types, such as terrain, water, and buildings. In particular, it includes a novel iconification concept to seamlessly interpolate between photorealistic and cartographic representations of 3D landmarks. Our work concludes with a discussion of open challenges in this field of research, including topics, such as user interaction and evaluation. Numéro de notice : A2015-539 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00087041.2015.1119462 En ligne : http://dx.doi.org/10.1080/00087041.2015.1119462 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78798
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Titre : Real-time rendering of water surfaces with cartography-oriented design Type de document : Article/Communication Auteurs : Amir Semmo, Auteur ; Jan Eric Kyprianidis, Auteur ; Matthias Trapp, Auteur ; Jürgen Döllner, Auteur Editeur : New York [Etats-Unis] : Association for computing machinery ACM Année de publication : 2013 Conférence : CAe@Expressive 2013, 9th international symposium on Computational Aesthetics in Graphics, Visualization, and Imaging 19/07/2013 21/07/2013 Anaheim Californie - Etats-Unis Proceedings ACM Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] hachure
[Termes IGN] rendu (géovisualisation)
[Termes IGN] surface de l'eau
[Termes IGN] temps réel
[Vedettes matières IGN] GéovisualisationRésumé : (auteur) More than 70% of the Earth's surface is covered by oceans, seas, and lakes, making water surfaces one of the primary elements in geospatial visualization. Traditional approaches in computer graphics simulate and animate water surfaces in the most realistic ways. However, to improve orientation, navigation, and analysis tasks within 3D virtual environments, these surfaces need to be carefully designed to enhance shape perception and land-water distinction. We present an interactive system that renders water surfaces with cartography-oriented design using the conventions of mapmakers. Our approach is based on the observation that hand-drawn maps utilize and align texture features to shorelines with non-linear distance to improve figure-ground perception and express motion. To obtain local orientation and principal curvature directions, first, our system computes distance and feature-aligned distance maps. Given these maps, waterlining, water stippling, contour-hatching, and labeling are applied in real-time with spatial and temporal coherence. The presented methods can be useful for map exploration, landscaping, urban planning, and disaster management, which is demonstrated by various real-world virtual 3D city and landscape models. Numéro de notice : C2013-007 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : 10.1145/2487276.2487277 En ligne : https://doi.org/10.1145/2487276.2487277 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89571 Documents numériques
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