Camera calibration and/or use of a calibrated camera
US11704832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2018 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus that calibrates a parametric mapping that maps between object points and image points. The apparatus captures an image of a calibration pattern including features defining object points. The apparatus determines, from the image, measured image points that correspond to the object points. The apparatus determines, from the mapping, putative image points that correspond to the object points. The apparatus minimizes a cumulative cost function dependent upon differences between the measured image points and putative image points to determine parameters of the parametric mapping. The mapping uses a parametric function to specify points where light rays travelling from object points to image points cross the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.