Systems and methods to improve camera intrinsic parameter calibration
US10504244B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Aug 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described herein are systems and methods that provide easy and effective camera calibration. In one or more embodiments, a set of calibration patterns, such as array of unique markers, are used as a calibration target. The unique calibration markers resolve ambiguity when only partial views of the calibration target are captured. Embodiments disclosed herein also allow for an interactive calibration process that can direct users to specific locations within the camera image that require additional calibration image captures. Also, in one or more embodiments, the calibration process may be checked at one or more stages to help insure that the final camera intrinsic parameters will be sufficiently accuracy. One of the verifications may include addressing overfitting by, for example, using a first subset of the captured images to compute the intrinsic parameters and using a second set of the captured images to verify those intrinsic parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.