Extended hybrid meshing algorithm for multiresolution terrain models
| Autor: | Jürgen Döllner, Margarita Amor, E. G. Paredes, Montserrat Bóo, Javier D. Bruguera |
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| Rok vydání: | 2012 |
| Předmět: |
business.industry
Institut für Informatik und Computational Science Geography Planning and Development Raised-relief map Terrain Terrain rendering Computer Science::Computational Geometry Library and Information Sciences 3D modeling Grid Triangulated irregular network Rendering (computer graphics) Computer Science::Graphics Geography Polygon mesh business Algorithm ComputingMethodologies_COMPUTERGRAPHICS Information Systems |
| Zdroj: | International Journal of Geographical Information Science. 26:771-793 |
| ISSN: | 1362-3087 1365-8816 |
| DOI: | 10.1080/13658816.2011.615317 |
| Popis: | Hybrid terrains are a convenient approach for the representation of digital terrain models, integrating heterogeneous data from different sources. In this article, we present a general, efficient scheme for achieving interactive level-of-detail rendering of hybrid terrain models, without the need for a costly preprocessing or resampling of the original data. The presented method works with hybrid digital terrains combining regular grid data and local high-resolution triangulated irregular networks. Since grid and triangulated irregular network data may belong to different datasets, a straightforward combination of both geometries would lead to meshes with holes and overlapping triangles. Our method generates a single multiresolution model integrating the different parts in a coherent way, by performing an adaptive tessellation of the region between their boundaries. Hence, our solution is one of the few existing approaches for integrating different multiresolution algorithms within the same terrain model, achieving a simple interactive rendering of complex hybrid terrains. |
| Databáze: | OpenAIRE |
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