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.

Date of Patent:
Jan. 30, 2024

Filed:

Mar. 26, 2019
Applicant:

Nec Corporation, Tokyo, JP;

Inventors:

Masato Tsukada, Tokyo, JP;

Hiroshi Imai, Tokyo, JP;

Chisato Funayama, Tokyo, JP;

Yuka Ogino, Tokyo, JP;

Ryuichi Akashi, Tokyo, JP;

Keiichi Chono, Tokyo, JP;

Emi Inui, Tokyo, JP;

Yasuhiko Yoshida, Tokyo, JP;

Hiroshi Yamada, Tokyo, JP;

Shoji Yachida, Tokyo, JP;

Takashi Shibata, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06V 10/25 (2022.01); G06V 10/60 (2022.01); G06V 40/18 (2022.01); A61B 5/06 (2006.01); A61B 5/16 (2006.01);
U.S. Cl.
CPC ...
G06V 10/25 (2022.01); A61B 5/16 (2013.01); G06V 10/60 (2022.01); G06V 40/18 (2022.01);
Abstract

An image acquisition unit () acquires an image obtained by capturing at least eyes of a target person. An object specifying unit () specifies an object in a line-of-sight direction of the target person using the acquired image. An incident light amount calculation unit () calculates an incident light amount representing an amount of light incident on the eyes of the target person using the acquired image. A reference pupil size determination unit () determines a reference pupil size based on the calculated incident light amount. A pupil size calculation unit () calculates a pupil size of the target person using the acquired image. An interest determination unit () determines an interest of the target person in the object by comparing the determined reference pupil size with the calculated pupil size.


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