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Proceedings Paper

Effects of intensity thresholding on the power spectrum of laser speckle
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Paper Abstract

Spatial-frequency filtering of laser speckle patterns has proven to be a useful tool in the measurement of MTF for focal plane arrays. Intensity thresholding of the laser speckle patterns offers nearly an order of magnitude savings in digital storage space. The effect of this thresholding on the spatial-frequency power spectral density of the speckle pattern is investigated. An optimum threshold level is found that minimizes distortion of the power spectrum for the classes of speckle data used for MTF testing.

Paper Details

Date Published: 31 August 1993
PDF: 7 pages
Proc. SPIE 1969, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IV, (31 August 1993); doi: 10.1117/12.154734
Show Author Affiliations
Alfred Dale Ducharme, CREOL/Univ. of Central Florida (United States)
Glenn D. Boreman, CREOL/Univ. of Central Florida (United States)
Donald R. Snyder, Air Force Wright Lab. (United States)


Published in SPIE Proceedings Vol. 1969:
Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IV
Gerald C. Holst, Editor(s)

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