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A framework for interactive visual analysis of heterogeneous marine data in an integrated problem solving environment / Shuai Liu in Computers & geosciences, vol 104 (July 2017)  

Public [article]  inComputers & geosciences > vol 104 (July 2017) Titre : A framework for interactive visual analysis of heterogeneous marine data in an integrated problem solving environment Type de document : Article/Communication Auteurs : Shuai Liu, Auteur ; Ge Chen, Auteur ; Shifeng Yao, Auteur ; Fenglin Tian, Auteur ; Wei Liu, Auteur Année de publication : 2017 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] base de données marines [Termes IGN] carte interactive [Termes IGN] données spatiotemporelles [Termes IGN] environnement géographique virtuel [Termes IGN] monde virtuel [Termes IGN] océanographie spatiale [Termes IGN] positionnement par Argos [Termes IGN] visualisation de données [Vedettes matières IGN] Géovisualisation Résumé : (auteur) This paper presents a novel integrated marine visualization framework which focuses on processing, analyzing the multi-dimension spatiotemporal marine data in one workflow. Effective marine data visualization is needed in terms of extracting useful patterns, recognizing changes, and understanding physical processes in oceanography researches. However, the multi-source, multi-format, multi-dimension characteristics of marine data pose a challenge for interactive and feasible (timely) marine data analysis and visualization in one workflow. And, global multi-resolution virtual terrain environment is also needed to give oceanographers and the public a real geographic background reference and to help them to identify the geographical variation of ocean phenomena. This paper introduces a data integration and processing method to efficiently visualize and analyze the heterogeneous marine data. Based on the data we processed, several GPU-based visualization methods are explored to interactively demonstrate marine data. GPU-tessellated global terrain rendering using ETOPO1 data is realized and the video memory usage is controlled to ensure high efficiency. A modified ray-casting algorithm for the uneven multi-section Argo volume data is also presented and the transfer function is designed to analyze the 3D structure of ocean phenomena. Based on the framework we designed, an integrated visualization system is realized. The effectiveness and efficiency of the framework is demonstrated. This system is expected to make a significant contribution to the demonstration and understanding of marine physical process in a virtual global environment. Numéro de notice : A2017-128 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.cageo.2017.03.021 En ligne : http://doi.org/10.1016/j.cageo.2017.03.021 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84543 [article]