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Proceedings Paper

Real-time zoom anti-aliasing improvement using programmable graphics processing units
Author(s): Efthimios Gouthas; Owen M. Williams
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Paper Abstract

The zoom anti-aliasing (ZAA) procedure used for rendering computer-generated targets at long range is examined in the light of its lack of conformality with sampling theory. This has led to the development of a GPU-based conformal version, called Schade ZAA. It is shown that Schade ZAA leads to improvement in intensity errors and significantly less scintillation when the target subtends less than a single pixel in screen space. It is shown further that the intensity errors for the normal type of irregularly-shaped target of most user interest are considerably smaller than has been previously reported. This is a significant result in that it gives confidence that the intensity of small and point source targets can be successfully conserved within the ZAA process.

Paper Details

Date Published: 16 May 2006
PDF: 15 pages
Proc. SPIE 6208, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XI, 620814 (16 May 2006); doi: 10.1117/12.663178
Show Author Affiliations
Efthimios Gouthas, Defence Science and Technology Organisation (Australia)
Owen M. Williams, Defence Science and Technology Organisation (Australia)

Published in SPIE Proceedings Vol. 6208:
Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XI
Robert Lee Murrer Jr., Editor(s)

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