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Optical Engineering

Optical pattern recognition for validation and security verification
Author(s): Bahram Javidi; Joseph L. Horner
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Paper Abstract

We propose an idea for security verification of credit cards, passports, and other forms of identification so that they cannot easily be reproduced. A new scheme of complex phase/amplitude patterns that cannot be seen and cannot be copied by an intensity-sensitive detector such as a CCD camera is used. The basic idea is to permanently and irretrievably bond a phase mask to a primary identification amplitude pattern such as a fingerprint, a picture of a face, or a signature. Computer simulation results and tests of the proposed system are provided to verify that both the phase mask and the primary pattern are separately readable and identifiable in an optical processor or correlator.

Paper Details

Date Published: 1 June 1994
PDF: 5 pages
Opt. Eng. 33(6) doi: 10.1117/12.170736
Published in: Optical Engineering Volume 33, Issue 6
Show Author Affiliations
Bahram Javidi, Univ. of Connecticut (United States)
Joseph L. Horner, Rome Lab. (United States)


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