The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 1989
Filed:
Feb. 27, 1987
Applicant:
Inventors:
Glenn M Fishbine, Eden Praire, MN (US);
Mark S Ransom, Minneapolis, MN (US);
Daniel E Germann, Minneapolis, MN (US);
Assignee:
C.F.A. Technologies, Inc., St. Louis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ; G06K / ;
U.S. Cl.
CPC ...
382 52 ; 382-4 ; 382 54 ; 358163 ;
Abstract
Methods for operating a programmable digital computer to enhance images of fingerprints represented by an array of pixel values. Methods for noise averaging, illumination equalizing, directional filtering, unhairing, curvature correcting, and scale correcting a fingerprint image are disclosed.
Quick Actions:
Fishbine, Glenn. (1989). Methods for digitally noise averaging and illumination equalizing (U.S. Patent No. 4811414). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4811414
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