Eye tracking using eyeball center position
US11129530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2018 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Dec 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An eye tracking system having circuitry configured to perform a method is disclosed. An estimated radius (r) from an eyeball center to a pupil center in an eye is obtained, and an estimated eyeball center position (e) in the eye in relation to an image sensor for capturing images of the eye is determined, and an image of the eye captured by means of the image sensor, and a position of a representation of the pupil center in the eye in the obtained image is identified. An estimated pupil center position (p′) is then determined based on the estimated eyeball center position (e), the estimated radius (r), and the identified position of the representation of the pupil center in the obtained image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.