Real-time zoom anti-aliasing improvement using programmable graphics processing units

Efthimios Gouthas; Owen M. Williams

doi:10.1117/12.663178

16 May 2006 Real-time zoom anti-aliasing improvement using programmable graphics processing units

Efthimios Gouthas, Owen M. Williams

Proceedings Volume 6208, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XI; 620814 (2006) https://doi.org/10.1117/12.663178
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

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.

Citation Download Citation

Efthimios Gouthas and Owen M. Williams "Real-time zoom anti-aliasing improvement using programmable graphics processing units", Proc. SPIE 6208, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XI, 620814 (16 May 2006); https://doi.org/10.1117/12.663178

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