Real-time registration of a stereo depth camera array
US9210417B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Sep 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Real-time registration of a camera array in an image capture device may be implemented in the field by adjusting a selected subset of independent parameters in a mapping function, termed registration coefficients, which have been determined to have the largest contribution to registration errors so that the array can be maintained in its initial factory-optimized calibrated state. By having to adjust only a relatively small subset of registration coefficients from within a larger set of coefficients (which are typically determined using a specialized calibration target in a factory setting), far fewer matching patterns need to be identified in respective images captured by cameras in the array in order to correct for registration errors. Such simplified pattern matching may be performed using images that are captured during normal camera array usage so that registration may be performed in real-time in the field without the need for specialized calibration targets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.