High-confidence optical head pose correspondence mapping with multiple lower-density markers for high-integrity headtracking on a headworn display (HWD)
US12347139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2022 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Sep 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30196
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for high integrity head pose estimation receives a 2D image including medium-density fiducials and low-density fiducials. The system then detects the medium-density fiducials and compares them with a 3D constellation to form an initial head pose estimate. The initial head pose estimate is then checked for possible alternative correspondences. A selection from a set of candidate initial head pose estimates is made to determine. The selected head pose estimate then has search areas established for the medium-density fiducials and low-density fiducials. The system then determines whether or not the head pose is valid and accurate based on whether or not the fiducials appear in their respective search areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.