Method and apparatus for camera calibration
US10304210B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Aug 9, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for calibrating a camera are provided. The method includes: detecting at least one edge of fixed object in image received from a camera, determining at least one horizontal midpoint of the at least one edge, calculating a first pixel distance between the determined at least one horizontal midpoint and a pre-stored at least one horizontal midpoint, calculating second pixel distances between a plurality of points on the detected at least one edge of the fixed object and a pre-stored plurality of points of the at least one edge of the fixed object, determining whether to recalibrate the camera based on the first pixel distance and the second pixel distances, and recalibrating the camera if the determining determines to recalibrate the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.