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:
Apr. 10, 2012
Filed:
Jul. 28, 2006
Koji Kobayashi, Tokyo, JP;
Atsushi Katsumata, Tokyo, JP;
Hiroshi Nakajima, Tokyo, JP;
Kazuyuki Miyazawa, Miyagi, JP;
Koichi Ito, Miyagi, JP;
Takafumi Aoki, Miyagi, JP;
Koji Kobayashi, Tokyo, JP;
Atsushi Katsumata, Tokyo, JP;
Hiroshi Nakajima, Tokyo, JP;
Kazuyuki Miyazawa, Miyagi, JP;
Koichi Ito, Miyagi, JP;
Takafumi Aoki, Miyagi, JP;
Yamatake Corporation, Tokyo, JP;
National University Corporation Tohoku University, Miyagi, JP;
Abstract
An iris authentication apparatus includes an iris area extraction unit, registration pattern generating unit, collation pattern generating unit, and collation unit. The iris area extraction unit extracts iris areas from a sensed registration eyeball image and a sensed collation eyeball image. When the iris area extraction unit extracts an iris area from the registration eyeball image, the registration pattern generating unit generates a registration iris pattern image by performing polar coordinate transformation of an image in the extracted iris area. When the iris area extraction unit extracts an iris area from the collation eyeball image, the collation pattern generating unit generates a collation iris pattern image by performing polar coordinate transformation of an image in the extracted iris area. The collation unit collates the registration iris pattern image output from the registration pattern generating unit and the collation iris pattern image output from the collation pattern generating unit on the basis of a correlation therebetween.