Dynamic calibration method for single and multiple video capture devices
US8150143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Jan 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a dynamic calibration method for a single and multiple video capture devices. The present invention can acquire the variations of the pan angle and tilt angle of a single video capture device according to the displacement of the feature points between successive images. For a plurality of video capture devices, the present invention includes the epipolar-plane constraint between a plurality of video capture devices to achieve the goal of dynamical calibration. The calibration method in the present invention does not require specific calibration patterns or complicated correspondence of feature points, and can be applied to surveillance systems with wide-range coverage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.