Time-Varying Interval Volumes

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dc.contributor.authorZhang, Caixiaen_US
dc.contributor.authorXue, Daqingen_US
dc.contributor.authorCrawfis, Rogeren_US
dc.contributor.authorWenger, Rephaelen_US
dc.contributor.editorKlaus Mueller and Thomas Ertl and Eduard Groelleren_US
dc.date.accessioned2014-01-29T17:43:10Z
dc.date.available2014-01-29T17:43:10Z
dc.date.issued2005en_US
dc.description.abstractIn this paper, we study the interval segmentation and direct rendering of time-varying volumetric data to provide a more effective and interactive volume rendering of time-varying structured and unstructured grids. Our segmentation is based upon intervals within the scalar field between time steps, producing a set of geometrically defined time-varying interval volumes. To construct the time-varying interval volumes, we cast the problem one dimension higher, using a five-dimensional iso-contour construction for interactive computation or segmentation. The key point of this paper is how to render the time-varying interval volumes directly. We directly render the 4D interval volumes by projecting the 4D simplices onto 3D, decomposing the projected 4-simplices to 3-simplices and then rendering them using a modified hardware-implemented projected tetrahedron method. In this way, we can see how interval volumes change with the time in one view. The algorithm is independent of the topology of the polyhedral cells comprising the grid, and thus offers an excellent enhancement to the volume rendering of time-varying unstructured grids. Another advantage of this algorithm is that various volumetric and surface boundaries can be embedded into the time-varying interval volumes.en_US
dc.description.seriesinformationVolume Graphics 2005en_US
dc.identifier.isbn3-905673-26-6en_US
dc.identifier.issn1727-8376en_US
dc.identifier.urihttps://doi.org/10.2312/VG/VG05/099-107en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.3 [Picture/Image Generation]: Display algorithmsen_US
dc.titleTime-Varying Interval Volumesen_US
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VG05: Eurographics/IEEE VGTC Workshop on Volume Graphics 2005