Calibration target for video processing
US9307232B1 · kind B1 · utility
8Cited by
9References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Sep 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2224
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus is disclosed which may serve as a target for calibrating a camera. The apparatus includes a hollow body having an interior surface, an exterior surface and at least one window formed in the hollow body through which the interior surface is visible. A plurality of distinguishable fiducial markers are arranged in a predetermined pattern along the interior and exterior surface of the hollow body. The fiducial markers can be distinguishable such that, for any given image of the target captured by a camera, there is only one position, rotation, distortion value, and focal length for the camera of interest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.