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Proceedings Paper

Representation of meteorological visibility in real-time simulation of targets and backgrounds
Author(s): Mario A. Torres; Donald W. Hoock Jr.
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Paper Abstract

Rapid advances in computer image generators (CIGs) and scene animating software facilitate the completion of important objectives in the distributed interactive simulation effort. One objective has been to produce an accurate simulation of meteorological visibility through the use of fog or blending functions. Silicon Graphics' (SGI) Performer software capabilities, for example, are shown here to be capable of correctly generating visibility and haze in real-time scenes if one applies certain physical definitions in conjunction with certain corrections to the SGI Performer software. This paper first presents a brief background on the physical basis of meteorological visibility. Then, it quantifies and tests the direct relationship between the scene generator's parameters for the `atmospheric fading coefficient' and the meteorological visibility. An important fix to the Performer's fog function is described and the results of our implementation of a meteorological visibility `calibration' are presented.

Paper Details

Date Published: 2 June 1995
PDF: 10 pages
Proc. SPIE 2469, Targets and Backgrounds: Characterization and Representation, (2 June 1995); doi: 10.1117/12.210597
Show Author Affiliations
Mario A. Torres, Science and Technology Corp. (United States)
Donald W. Hoock Jr., U.S. Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 2469:
Targets and Backgrounds: Characterization and Representation
Wendell R. Watkins; Dieter Clement, Editor(s)

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