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Hybrid shear-warp rendering


Zakaria, Mohamed Nordin and Selvanathan, N. (1999) Hybrid shear-warp rendering. Malaysian Journal of Computer Science, 12 (2). pp. 19-26. ISSN 0127-9084


Shear-warp rendering is a fast and efficient method for visualizing a volume of sampled data based on a factorization of the viewing transformation into a shear and a warp. In shear-warp rendering, the volume is resampled, composited and warped to obtain the final image. Many applications, however, require a mixture of polygonal and volumetric data to be rendered together in a single image. This paper describes a new approach for extending the shear-warp rendering to simultaneously handle polygonal objects. A data structure, the zlist-buffe, is presented. It is basically a multilayered z-buffer. With the zlist-buffer, an object-based scan conversion of polygons requires only a simple modification of the standard polygon scan-conversion algorithm. This paper shows how the scan conversion can be integrated with shear-warp rendering of run-length encoded volume data to obtain quality images in real time. The utility and performance of the approach using a number of test renderings is also discussed.

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Official URL or Download Paper: http://e-journal.um.edu.my/publish/MJCS/136-151

Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
Publisher: Faculty of Computer Science and Information Technology, University of Malaya
Keywords: Volume rendering; Polygon rendering; Shear-warp factorization
Depositing User: Nabilah Mustapa
Date Deposited: 30 Dec 2016 02:52
Last Modified: 30 Dec 2016 02:52
URI: http://psasir.upm.edu.my/id/eprint/49455
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