Extrinsic camera parameter calibration method, extrinsic camera parameter calibration apparatus, and extrinsic camera parameter calibration system
US11816865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2021 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Nov 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30268
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are an extrinsic camera parameter calibration method, apparatus and system. The method includes: obtaining a calibration image photographed for a target location in a calibration cabin by a first camera provided therein; determining calibration feature information of the target location from the calibration image; obtaining reference feature information pre-determined from a reference image photographed for a target location in a reference cabin by a second camera provided therein; determining position-posture change data of the first relative to the second camera based on a calibration location of the calibration feature information in the calibration image and a reference location of the reference feature information in the reference image; and determining an extrinsic parameter of the first camera based on the position-posture change data. The extrinsic parameter of the first camera can be calibrated in real time and is closer to a currently actual state of the first camera when used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.