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Proceedings Paper

Psychophysical measurement of night vision goggle noise
Author(s): Rachael L. Glasgow; Peter L. Marasco; Paul R. Havig; Gary L. Martinsen; George A. Reis; Eric L. Heft
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Paper Abstract

Pilots, developers, and other users of night-vision goggles (NVGs) have pointed out that different NVG image intensifier tubes have different subjective noise characteristics. Currently, no good model of the visual impact of NVG noise exists. Because it is very difficult to objectively measure the noise of a NVG, a method for assessing noise subjectively using simple psychophysical procedures was developed. This paper discusses the use of a computer program to generate noise images similar to what an observer sees through an NVG, based on filtered white noise. The images generated were based on 1/f (where f is frequency) filtered white noise with several adjustable parameters. Adjusting each of these parameters varied different characteristics of the noise. This paper discusses a study where observers compared the computer-generated noise images to true NVG noise and were asked to determine which computer-generated image was the best representation of the true noise. This method was repeated with different types of NVGs and at different luminance levels to study what NVG parameters cause variations in NVG noise.

Paper Details

Date Published: 8 September 2003
PDF: 10 pages
Proc. SPIE 5079, Helmet- and Head-Mounted Displays VIII: Technologies and Applications, (8 September 2003); doi: 10.1117/12.486338
Show Author Affiliations
Rachael L. Glasgow, Air Force Research Lab. (United States)
Peter L. Marasco, Air Force Research Lab. (United States)
Paul R. Havig, Air Force Research Lab. (United States)
Gary L. Martinsen, Air Force Research Lab. (United States)
George A. Reis, Northrop Grumman Corp. (United States)
Eric L. Heft, Northrop Grumman Corp. (United States)

Published in SPIE Proceedings Vol. 5079:
Helmet- and Head-Mounted Displays VIII: Technologies and Applications
Clarence E. Rash; Colin E. Reese, Editor(s)

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