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Optical Engineering

Statistical Analysis for a Binary Image Correlator in the Absence of Geometric Distortion
Author(s): Lewis J. Pinson; Joseph S. Boland, III; William W. Malcolm
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Paper Abstract

Threshold effects are examined for a real-time image correlator in the absence of geometric distortion. Images obtained from two different television sensors are sampled and quantized to two levels. The correlation algorithm is then implemented as an "exclusive OR" followed by summation. For a KxL reference array the correlation algorithm produces an output between zero and KL. This paper examines the effect of choosing a threshold No above which the images are considered to be correlated. Probability of false alarm is found to be dependent on the total number of pixels used in the correlation algorithm. Probability of detection is found to depend also on the video signal-to-noise ratios and is computed for Gaussian, uniform and bimodal image distributions.

Paper Details

Date Published: 1 December 1978
PDF: 5 pages
Opt. Eng. 17(6) 176635 doi: 10.1117/12.7972295
Published in: Optical Engineering Volume 17, Issue 6
Show Author Affiliations
Lewis J. Pinson, Auburn University (United States)
Joseph S. Boland, III, Auburn University (United States)
William W. Malcolm, DRDMI-TGC, MIRADCOM (United States)


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