Dynamic camera rotation calibration
US12250463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2023 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Nov 13, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is related to a method and arrangement for calibrating the camera of an eye tracking device and compensate for a potential angular offset of the camera. The method comprises: the steps of capturing an eye image of a user, wherein the eye image contains a plurality of glints created by a plurality of illuminators in the eye tracking system; detecting glints in the eye image; projecting illuminator positions onto the eye image to determine expected glint positions; determining an angular offset between expected glint positions and detected glint positions for corresponding pairs of expected and detected glint positions; determining the angular correction for the eye tracking camera using the determined angular offset angle; and applying the angular correction for the eye tracking camera to an eye tracker camera model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.