Automated camera calibration methods and systems
US9641830B2 · kind B2 · utility
1Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2014 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Jun 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2224
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems are disclosed for calibrating a camera using a calibration target apparatus that contains at least one fiducial marking on a planar surface. The set of all planar markings on the apparatus are distinguishable. Parameters of the camera are inferred from at least one image of the calibration target apparatus. In some embodiments, pixel coordinates of identified fiducial markings in an image are used with geometric knowledge of the apparatus to calculate camera parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.