Calibrating stereoscopic cameras
US9519976B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2011 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Mar 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/246
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stereoscopic camera calibration target includes: first illumination points on a first surface; second illumination points on a second surface, the first and second surfaces being planar, parallel to each other, and spaced from each other; and circuitry that sets a strobe frequency of the first and second illumination points. A method includes: moving a calibration target in front of a stereoscopic camera, the calibration target comprising first points on a first surface and second points on a second surface, the first and second surfaces being planar, parallel to each other, and spaced from each other; capturing, using the stereoscopic camera, an image sequence of the calibration target, the image sequence comprising pairs of left and right images of at least some of the first and second points; determining a calibration value for the stereoscopic camera using the image sequence; and processing the image sequence using the calibration value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.