Systems and methods for position estimation
US8878749B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Apr 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2354/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Systems and methods are described for improving gaze estimation based on glints. An example method may be executable to receive glint-location data indicating a location for each of one or more glints that are reflected from an eye. The glint-location data may be captured by an imaging device that is attached to a head-mountable display (HMD). The method may be further executable to determine a plurality of normalized pupil locations comprising at least a first and a second normalized pupil location. Each normalized pupil location may be determined based on the glint-location data for a different combinatoric subset of the one or more glints. The method may be further executable to determine a regression model to fit the plurality of normalized pupil locations to an expected gaze location, and perform a gaze-tracking process based on the regression model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.