Gaze-tracking system and method employing selective glints
US11423569B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2021 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Apr 9, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A gaze-tracking system for use in head-mounted display apparatus. The gaze-tracking system includes: illuminators; camera; and processor configured to: illuminate illuminators in sequential manner; control camera to capture eye images of user's eye during illumination of illuminators; identify reflection(s) of illuminator in eye image; determine extent of deformation in shape of reflection(s) with respect to shape of illuminator; determine extent of displacement in position of reflection(s) with respect to position of illuminator; compute user-specific score for illuminator based on extents of deformation and displacement; select illuminator(s) based on user-specific scores; illuminate illuminator(s); control camera to capture eye image of user's eye during illumination of illuminator(s); and detect gaze direction of user based upon relative position of pupil of user's eye with respect to reflections of illuminator(s) in eye image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.