Calibrating a gaze tracker
US12393269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2023 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Mar 1, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/193
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes displaying a plurality of visual elements. The method includes determining, based on respective characteristic values of the plurality of visual elements, an expected gaze target that indicates a first display region where a user of the device intends to gaze while the plurality of visual elements is being displayed. The method includes obtaining, via the image sensor, an image that includes a set of pixels corresponding to a pupil of the user of the device. The method includes determining, by a gaze tracker, based on the set of pixels corresponding to the pupil, a measured gaze target that indicates a second display region where the user is measuredly gazing. The method includes adjusting a calibration parameter of the gaze tracker based on a difference between the first display region indicated by the expected gaze target and the second display region indicated by the measured gaze target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.