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:
Jun. 24, 2025
Filed:
Feb. 21, 2020
Nec Corporation, Tokyo, JP;
Ryoma Oami, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A biometric authentication device, by utilizing difference distance information obtained on the basis of in-focus information indicating the degree of focusing in an image of a subject serving as the target of biometric authentication and an estimated distance to the subject obtained from the distance between feature points in the image, generates a corrected distance in which a deviation between the estimated distance and a focal distance to the subject has been corrected on the basis of the difference distance information. The biometric authentication device generates information for controlling a focal point during image acquisition of the subject on the basis of the corrected distance, and generates information for selecting an image to be biometrically authenticated from among images of the subject photographed after controlling the focal point.