Calibration for multi-camera systems
US10628967B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2017 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Apr 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing system calibrates multiple cameras of a camera rig system. The image processing system may correct barrel distortion of raw images to generate rectilinear images. The image processing system identifies key points in neighboring rectilinear image pairs captured by adjacent cameras. The image processing system may generate a parameter vector by solving an optimization problem using a gradient descent loop and the key points. The optimization problem reduces a displacement error to align the key points of the rectilinear images by adjusting calibration of the cameras or a transform of the images (which corresponds to camera calibration). The image processing system may jointly rectify, i.e., calibrate, multiple cameras simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.