Visual positioning method and apparatus, electronic device, and system
US11069088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Jun 21, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/167
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A visual positioning method includes: detecting a lane line of a surface based on a video stream of the road surface collected by a camera mounted on a vehicle; determining first reference point information at a current angle of view according to a detection result of the lane line; determining a third homography matrix according to the first and second reference point information at a previous angle of view of the camera, the position of a second reference point corresponds to that of a first reference point, and the third homography matrix is used for representing a mapping relationship between a coordinate of the camera at the current angle of view and a coordinate of the camera at the previous angle of view; determining a first homography matrix according to the third homography matrix and a predetermined homography matrix; and performing positioning according to the first homography matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.