Accession Number : ADD015165

Title :   Optical Fingerprint Correlator.

Descriptive Note : Patent, Filed 24 Jul 90, patented 17 Sep 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Marsh, Ronald A ; Petty, George S

Report Date : 17 Sep 1991

Pagination or Media Count : 6

Abstract : This document discloses a high speed optical fingerprint correlator. The invention uses the unknown fingerprint to produce a matched filter for autocorrelation and detecting and displaying the resultant indicia of correlation, the correlation peaks produced. The matched filter is produced by performing digital Fourier transform on the optically scanned digitized image input of the unknown print. The matched filter is then multiplied with the optically performed Fourier transforms on the reconstructed known fingerprint images provided in digital format from visual or digital storage.

Descriptors :   AUTOCORRELATION, CORRELATION, DIGITAL SYSTEMS, FINGERPRINTS, FORMATS, FOURIER TRANSFORMATION, IMAGES, MATCHED FILTERS, OPTICAL CORRELATORS, STORAGE, VISION

Subject Categories : Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE