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. 22, 2020
Filed:
Jun. 07, 2018
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi-ken, JP;
Shinichi Kojima, Nagakute, JP;
Shin Osuga, Nagoya, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-shi, Aichi-ken, JP;
Abstract
A corneal-reflection-based gaze detection section calculates a time series of a three-dimensional gaze vector in a camera coordinate system from a time series of facial images. A face position-and-orientation estimation section estimates a time series of a three-dimensional position and orientation of a face. An eyeball-center-coordinates transformation section calculates a time series of a three-dimensional position of the eyeball center in a coordinate system of a three-dimensional facial model. A fixed parameter calculation section calculates for use as a fixed parameter a three-dimensional position of the eyeball center in the three-dimensional facial-model coordinate system. An eyeball-center-based gaze detection section uses the three-dimensional position of the eyeball center calculated by the fixed parameter calculation section to calculate a three-dimensional gaze vector from a three-dimensional position of the eyeball center to a three-dimensional position of a pupil center in the camera coordinate system. This enables accurate gaze tracking to be performed using a simple configuration and without performing calibration.