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dc.contributor.authorEs, A.en_US
dc.contributor.authorKeles, H. Y.en_US
dc.contributor.authorIsler, V.en_US
dc.contributor.editorAlan Heirich and Bruno Raffin and Luis Paulo dos Santosen_US
dc.date.accessioned2014-01-26T16:30:47Z
dc.date.available2014-01-26T16:30:47Z
dc.date.issued2006en_US
dc.identifier.isbn3-905673-40-1en_US
dc.identifier.issn1727-348Xen_US
dc.identifier.urihttp://dx.doi.org/10.2312/EGPGV/EGPGV06/067-073en_US
dc.description.abstractRay traversal is the most time consuming part in volume ray casting. In this paper, an acceleration technique for direct volume rendering is introduced, which uses a GPU friendly data structure to reduce traversal time. Empty regions and homogeneous regions in the volume is encoded using extended anisotropic chessboard distance (EACD) transformation. By means of EACD encoding, both the empty spaces and samples belonging to the homogeneous regions are processed efficiently on GPU with minimum branching. In addition to skipping empty spaces, this method reduces the sampling operation inside a homegeneous region using ray integral factorization. The proposed algorithm integrates the optical properties in the homogeneous regions in one step and leaps directly to the next region. We show that our method can work more than 6 times faster than primitive ray caster without any visible loss in image quality.en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Parallel Processing, I.3.3 [Computer Graphics]: Viewing Algorithms,Bitmap, I.3.3 [Computer Graphics]: And Framebuffer Operationsen_US
dc.titleAccelerated Volume Rendering with Homogeneous Region Encoding using Extended Anisotropic Chessboard Distance on GPUen_US
dc.description.seriesinformationEurographics Symposium on Parallel Graphics and Visualizationen_US


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