Reference TypeConference Proceedings
Citation KeyMirandaCele:2011:AcVoRe
Author1 Miranda, Fábio Markus
2 Celes, Waldemar
Affiliation1 Tecgraf/PUC-Rio - Computer Science Department
2 Tecgraf/PUC-Rio - Computer Science Department
TitleAccurate volume rendering of unstructured hexahedral meshes
Conference NameConference on Graphics, Patterns and Images, 24 (SIBGRAPI)
EditorLewiner, Thomas
Torres, Ricardo
Book TitleProceedings
DateAug. 28 - 31, 2011
Publisher CityLos Alamitos
PublisherIEEE Computer Society
Conference LocationMaceió
Keywordsrendering, hexahedral mesh, unstructured mesh, ray integral.
AbstractImportant 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.
Tertiary TypeFull Paper
FormatDVD, On-line.
Size5906 KiB
Number of Files1
Target Filepaper.pdf
Last Update2011:
Metadata Last Update2020: administrator {D 2011}
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History2011-07-23 15:36:12 :: -> administrator :: 2011
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