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Algorithms For Detection Of Correlation SpotsThree algorithms provide for improved postprocessing of outputs of optical correlators based on binary phase-only filters. Detect correlation spots. Function in presence of noise and executed rapidly. First algorithm starts processing correlation-image data while data fed out of video camera and digitized for subsequent analysis. Second involves convolution of correlation image with small-window two-dimensional impulse-response function followed by threshold operation in which negative values of convolution integral set to zero. Third affects generation as well as postprocessing of correlation image.
Document ID
19930000608
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Scholl, Marija S.
(Caltech)
Udomkesmalee, Suraphol
(Caltech)
Date Acquired
August 16, 2013
Publication Date
September 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 9
ISSN: 0145-319X
Subject Category
Mathematics And Information Sciences
Report/Patent Number
NPO-18446
Accession Number
93B10608
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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