Long-term visual trailer tracker for vehicle-trailer angle estimation
US12315194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2021 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | May 17, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for visual trailer tracking of vehicle-trailer angle estimation, including: (a) camera receiving images, each most recently received image being identified as a current image, replacing a previously identified current image; (b) during a driving maneuver, extracting visual features from the current image, calculating a trailer angle from the current image, and storing the current image as a reference image, the trailer angle as a trailer angle reference and the extracted visual features as visual reference features; and (c) matching the visual features from the current image with the visual reference features. When a number of matches is below a threshold, repeating operation (c) to update the reference image, the trailer angle reference and the visual reference features. The method includes calculating a trailer angle between a trailer representation in the current image and a trailer representation in the reference image based in part upon the trailer angle reference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.