Eye tracking using optical flow
US10013055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Nov 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An eye tracking system, images the surface (e.g., sclera) of each eye of a user to capture an optical flow field resulting from a texture of the imaged surface. The eye tracking system includes illumination source (e.g., laser) and a detector (e.g., camera). The source illuminates a portion of the eye that is imaged the camera. As the eye moves, different areas of the eye are imaged, allowing generation of a map of a portion of the eye. An image of a portion of the eye is includes a diffraction pattern (i.e., the optical flow) corresponding to the portion of the eye. Through a calibration process, the optical flow is mapped to a location where the eye is looking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.