Camera pair calibration using non-standard calibration objects
US9686539B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2016 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Jun 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and computer readable media for calibrating two cameras (image capture units) using a non-standard, and initially unknown, calibration object are described. More particularly, an iterative approach to determine the structure and pose of an target object in an unconstrained environment are disclosed. The target object may be any of a number of predetermined objects such as a specific three dimensional (3D) shape, a specific type of animal (e.g., dogs), or the face of an arbitrary human. Virtually any object whose structure may be expressed in terms of a relatively low dimensional parametrized model may be used as a target object. The identified object (i.e., its pose and shape) may be used as input to a bundle adjustment operation resulting in camera calibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.