Patent · US Active

Gaze tracking using mapping of pupil center position

US11249547B2 · kind B2 · utility

1Cited by

0References

17Claims

0Family size

Assignee

Tobii AB · SE

Inventors

Tiesheng Wang · Dalian, CN
Gilfredo Remon Salazar · Danderyd, SE
Yimu Wang · Danderyd, SE
Pravin Kumar Rana · Danderyd, SE
Johannes Kron · Danderyd, SE
Mark Ryan · McMinnville, US
Torbjörn Sundberg · Danderyd, SE

Key dates

Filing date	Oct 31, 2019
Grant date	Feb 15, 2022
Priority date	—
Expiry date	Dec 29, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06V40/193
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Images of an eye are captured by a camera. For each of the images, gaze data is obtained and a position of a pupil center is estimated in the image. The gaze data indicates a gaze point and/or gaze direction of the eye when the image was captured. A mapping is calibrated using the obtained gaze data and the estimated positions of the pupil center. The mapping maps positions of the pupil center in images captured by the camera to gaze points at a surface, or to gaze directions. A further image of the eye is captured by the camera. A position of the pupil center is estimated in the further image. Gaze tracking is performed using the calibrated mapping and the estimated position of the pupil center in the further image. These steps may for example be performed at a HMD.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.