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- W1983721107 abstract "Important engineering applications use unstructured hexahedral meshes for numerical simulations. Hexahedral cells, when compared to tetrahedral ones, tend to be more numerically stable and to require less mesh refinement. However, volume visualization of unstructured hexahedral meshes is challenging due to the trilinear variation of scalar fields inside the cells. The conventional solution consists in subdividing each hexahedral cell into five or six tetrahedra, approximating a trilinear variation by a piecewise linear function. This results in inaccurate images and increases the memory consumption. In this paper, we present an accurate ray-casting volume rendering algorithm for unstructured hexahedral meshes. In order to capture the trilinear variation along the ray, we propose the use of quadrature integration. A set of computational experiments demonstrates that our proposal produces accurate results, with reduced memory footprint. The entire algorithm is implemented on graphics cards, ensuring competitive performance." @default.
- W1983721107 created "2016-06-24" @default.
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- W1983721107 date "2011-08-01" @default.
- W1983721107 modified "2023-09-23" @default.
- W1983721107 title "Accurate Volume Rendering of Unstructured Hexahedral Meshes" @default.
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- W1983721107 doi "https://doi.org/10.1109/sibgrapi.2011.3" @default.
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