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Optical generation of a circular harmonic filter for rotation and translation invariant optical pattern recognitionA new method to generate a circular harmonic filter with both rotation and translation invariance is described, which is based on a phase-shifted double-exposure (PSDE) technique. An expression for the peak correlation intensity at the origin for the correlation plane as a function of target orientation for the PSDE filter is derived. Experimental results confirming the theoretical predictions are provided.
Document ID
19880028096
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cheng, Yeou-Yen
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
October 15, 1987
Publication Information
Publication: Applied Optics
Volume: 26
ISSN: 0003-6935
Subject Category
Optics
Accession Number
88A15323
Distribution Limits
Public
Copyright
Other

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