31 August 1993 Effects of intensity thresholding on the power spectrum of laser speckle
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alfred Dale Ducharme, Alfred Dale Ducharme, Glenn D. Boreman, Glenn D. Boreman, Donald R. Snyder, Donald R. Snyder, } "Effects of intensity thresholding on the power spectrum of laser speckle", Proc. SPIE 1969, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing IV, (31 August 1993); doi: 10.1117/12.154734; https://doi.org/10.1117/12.154734
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