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:
Dec. 17, 2013
Filed:
Mar. 03, 2009
Yuji Yamanaka, Kanagawa, JP;
Nobuhiro Morita, Kanagawa, JP;
Shigeru Oouchida, Tokyo, JP;
Jun Watanabe, Kanagawa, JP;
Shin Aoki, Kanagawa, JP;
Tetsuya Sasaki, Kanagawa, JP;
Yuji Yamanaka, Kanagawa, JP;
Nobuhiro Morita, Kanagawa, JP;
Shigeru Oouchida, Tokyo, JP;
Jun Watanabe, Kanagawa, JP;
Shin Aoki, Kanagawa, JP;
Tetsuya Sasaki, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image taking unit including a lens array, a light shielding member, and an image taking unit that acquires a compound eye image of a vein pattern of a living body held at a lens array. A shift estimation unit estimates an image shift amount between ommatidium images of the compound eye image. An image restructuring unit restructures a single image from the compound eye image by using the image shift amount. In at least one embodiment, a size correction unit corrects the size of the restructured single image with a magnification ratio determined by the estimated image shift amount and an image shift amount stored in a registration pattern storage unit so as to correspond to a registration pattern. As a result, it is possible to perform personal authentication while compensating influences due to fluctuations in a subject distance.