Point-of-gaze estimation robust to head rotations and/or device rotations
US9244529B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 27, 2014 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Apr 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/013
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Point-of-gaze of a user looking at a display is estimated, taking into account rotation of the user's head or rotation of the display. An image of an eye of the user is captured. The image is processed to determine coordinates in the image of defined eye features, sufficient to determine the eye's optical axis. At least one angle is determined, the at least one angle proportional to an angle between (i) a line coincident with an edge of the display and (ii) an intersection of the sagittal plane of the user's head with a plane of the display. An intersection of the eye's line-of-sight with the plane of the display is estimated using the eye's optical axis, and using the at least one angle to account for rotation of the user's head or the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.