Fast wake-up in a gaze tracking system
US10198070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2017 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Sep 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/325
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A gaze tracking system, leaving a low power mode in response to an activation signal, captures an initial burst of eye pictures in short time by restricting the image area of a sensor, with the purpose of enabling an increased frame rate. Subsequent eye pictures are captured at normal frame rate. The first gaze point value is computed memorylessly based on the initial burst of eye pictures and no additional imagery, while subsequent values may be computed recursively by taking into account previous gaze point values or information from previous eye pictures. The restriction of the image area may be guided by a preliminary overview picture captured using the same or a different sensor. From the gaze point values, the system may derive a control signal to be supplied to a computer device with a visual display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.