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Proceedings Paper

Volume rendering using parallel algebraic logic (PAL) hardware
Author(s): Hongzheng Li; Hongchi Shi; Patrick C. Coffield
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Paper Abstract

In this paper, we present the implementation of a volume graphics rendering algorithm using shift-restoration operations on parallel algebraic logic (PAL) image processor. The algorithm is a parallel ray casting algorithm. In order to eliminate shading artifacts caused by inaccurate estimation of surface normal vectors, we use gray level volume instead of binary volume, and apply a low pass filter to smooth the volume object surfaces. By transforming the volume to an intermediate coordinate system to which there is a simple mapping from the object coordinate system, we solve the data redistribution problem caused by nonregular data access patterns in volume rendering. It has been proved very effective in reducing the data communication cost of the rendering algorithm on the PAL hardware.

Paper Details

Date Published: 19 September 1997
PDF: 9 pages
Proc. SPIE 3166, Parallel and Distributed Methods for Image Processing, (19 September 1997); doi: 10.1117/12.279625
Show Author Affiliations
Hongzheng Li, Univ. of Missouri/Columbia (United States)
Hongchi Shi, Univ. of Missouri/Columbia (United States)
Patrick C. Coffield, Air Force Wright Lab. (United States)

Published in SPIE Proceedings Vol. 3166:
Parallel and Distributed Methods for Image Processing
Hongchi Shi; Patrick C. Coffield, Editor(s)

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