Eye tracking device and eye tracking method
US10496166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2017 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Feb 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An eye tracking method in the disclosure comprises an image-capturing step of capturing a facial image including an eyeball of an object person, light from a light source that emits the light to form a corneal reflex point on the eyeball of the object person who gazes at a predetermined gaze point being reflected from the eyeball, a detecting step of calculating visual line information in a world coordinate system using the facial image captured in the image-capturing step and a correcting step of transforming the visual line information in the world coordinate system calculated in the detecting step into visual line information in a correction coordinate system that is a coordinate system different from the world coordinate system, and correcting the visual line information in the correction coordinate system using correction information for correcting a detection error caused by an individual difference of the eyeball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.