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:
May. 28, 2024
Filed:
Feb. 01, 2019
Alertness estimation apparatus, alertness estimation method, and computer- readable recording medium
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Masanori Tsujikawa, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 23/00 (2006.01); A61B 5/00 (2006.01); A61B 5/18 (2006.01); G06V 10/60 (2022.01); G06V 10/62 (2022.01); G06V 10/82 (2022.01); G06V 40/16 (2022.01); G06V 40/18 (2022.01);
U.S. Cl.
CPC ...
A61B 5/18 (2013.01); A61B 5/4809 (2013.01); A61B 5/7203 (2013.01); A61B 5/7267 (2013.01); G06V 10/60 (2022.01); G06V 10/62 (2022.01); G06V 10/82 (2022.01); G06V 40/171 (2022.01); G06V 40/18 (2022.01);
Abstract
An alertness estimation apparatus, includes: an image extraction unitthat extracts an image of a portion including eyes from an image data of a face image of a human; a first alertness estimation unitthat estimates a first alertness based on the extracted image; a pulse wave detection unitthat determines whether or not the estimated first alertness satisfies a set condition, and detect a pulse wave of the human from the face image, when the first alertness satisfies the set condition; and a second alertness estimation unitthat estimates a second alertness of the human based on the detected pulse wave.