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VISSYM
2003

Hardware-assisted View-dependent Isosurface Extraction using Spherical Partition

13 years 5 months ago
Hardware-assisted View-dependent Isosurface Extraction using Spherical Partition
Extracting only the visible portion of an isosurface can improve both the computation efficiency and the rendering speed. However, the visibility test overhead can be quite high for large scale data sets. In this paper, we present a view-dependent isosurface extraction algorithm utilizing occlusion query hardware to accelerate visible isosurface extraction. A spherical partition scheme is proposed to traverse the data blocks in a layered front-to-back order. Such traversal order helps our algorithm to identify the visible isosurface blocks more quickly with fewer visibility queries. Our algorithm can compute a more complete isosurface in a smaller amount of time, and thus is suitable for time-critical visualization applications. Categories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Hardware Architecture; I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism I.3.7 [Computer Graphics]: visible line/surface algorithms
Jinzhu Gao, Han-Wei Shen
Added 01 Nov 2010
Updated 01 Nov 2010
Type Conference
Year 2003
Where VISSYM
Authors Jinzhu Gao, Han-Wei Shen
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