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Proceedings Paper

On issues of precision for hardware texture-based volume visualization
Author(s): Eric LaMar
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Paper Abstract

This paper discusses issues with the limited precision of hardware texture-based volume visualization. We will describe the compositing OVER operator and how fixed-point arithmetic affects it. We propose two techniques to improve the precision of fixed-point compositing and the accuracy of hardware-based volume visualization. The first technique is to perform dithering of color and alpha values. The sedond technique we call exponent-factoring, and captures significanly more numeric resolution than dithering, but can only produce monochromatic images.

Paper Details

Date Published: 4 June 2004
PDF: 10 pages
Proc. SPIE 5295, Visualization and Data Analysis 2004, (4 June 2004); doi: 10.1117/12.539257
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Published in SPIE Proceedings Vol. 5295:
Visualization and Data Analysis 2004
Robert F. Erbacher; Philip C. Chen; Jonathan C. Roberts; Matti T. Gröhn; Katy Börner, Editor(s)

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