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:
Feb. 03, 2009
Filed:
Sep. 12, 2003
Applicants:
Takeo Azuma, Nara, JP;
Kenji Kondo, Kyoto, JP;
Masahiro Wakamori, Kanagawa, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In iris authentication, iris regions are extracted from a plurality of images (). The extracted iris regions are subjected to polar coordinate transformation () and band limitation (). Thereafter, an iris code is generated from the coordinate-transformed, band-limited iris regions (). The iris code is subjected to rotational compensation (). A plurality of resultant iris codes are synthesized into a single iris code by determining the bit value of each bit based on a majority rule ().