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:
Sep. 21, 2021
Filed:
Jan. 10, 2020
Applicant:
Wistron Corporation, New Taipei, TW;
Inventors:
Assignee:
Wistron Corporation, New Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G06T 7/90 (2017.01);
U.S. Cl.
CPC ...
G06K 9/00288 (2013.01); G06K 9/00268 (2013.01); G06T 7/90 (2017.01); G06K 2009/00939 (2013.01); G06T 2207/30201 (2013.01);
Abstract
A live facial recognition method includes capturing a plurality of images of a face of a subject under recognition; obtaining time-varying data according to the images, the time-varying data representing a periodic variation of facial color of the subject under recognition due to facial vasoconstriction and vasodilation caused by heartbeat; and comparing the time-varying data with a predetermined frequency range. The subject under recognition is determined to be a living subject when the time-varying data is within the predetermined frequency range.