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3D simulation of soft-objects / D.Y. Shen in International journal of geographical information science IJGIS, vol 20 n° 3 (march 2006)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 20 n° 3 (march 2006) . - pp 261 - 271 Titre : 3D simulation of soft-objects Type de document : Article/Communication Auteurs : D.Y. Shen, Auteur ; K. Takara, Auteur ; et al., Auteur Année de publication : 2006 Article en page(s) : pp 261 - 271 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] animation graphique [Termes IGN] effondrement de terrain [Termes IGN] érosion [Termes IGN] modélisation 3D [Termes IGN] objet géographique [Termes IGN] SIG 3D [Termes IGN] simulation 3D [Termes IGN] système d'information géographique [Termes IGN] voxel Résumé : (Auteur) In terms of geometry, existing approaches for 3D GIS modelling can be classified into three types: surface-based, volume-based, and hybrids. These approaches are suitable for representing rigid geo-objects, but so far there are no ideal GIS modelling methods for simulation of soft geo-objects such as flowing water and soil. In this study, a GIS flow element (FE) and GIS soft voxel (SV) were used for simulation of overland flow and soil erosion. The length of a GIS FE is directly proportional to the velocity of overland flow, while the inclination of a GIS FE represents the direction of overland flow. The GIS SV is generated by implicit functions, which can be utilized to create a smoothed surface. This study reveals that GIS FEs can realistically represent the dynamics and stochastics of soft geo-objects, while GIS SVs can simulate deformation of soft geo-objects. Moreover, both of these approaches can reflect geoscientific laws because the animation of 3D scenarios is controlled by geoscientific models. Numéro de notice : A2006-092 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810500287149 En ligne : https://doi.org/10.1080/13658810500287149 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27819 [article]

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