Method and system to calibrate camera devices of a vehicle vision system using a programmable calibration target device
US11172193B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2020 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Dec 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for calibration of vision sensors includes, by a processor: selecting a calibration sequence that has a base calibration pattern and calibration angles, generating a calibrating target that may include the calibration pattern at a selected calibration angle of the angles, and causing a display screen to display a digital image representative of the target at the selected angle relative to an originating border of the selected angle. Each of the calibration angles is associated with a different originating border of the screen. The method includes by a vision sensor capturing at least one image of the calibrating target displayed on the screen. The calibration is repeated for each calibration angle of the sequence. The method includes performing calibration of the vision sensor in response to image signal processing of extracted calibration features in the at least one image of the calibrating targets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.