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. 19, 2013
Filed:
Jul. 13, 2009
Applicant:
Eiichiro Ikeda, Yokohama, JP;
Inventor:
Eiichiro Ikeda, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image processing apparatus includes a detection circuit configured to detect an image, a luminance correction circuit configured to determine luminance of the detected image and to execute correction for reducing a luminance variation in the detected image, and an extraction circuit configured to extract feature amount data from the detected image corrected by the correction circuit for use in authentication processing.