Online reference patch generation and pose estimation for augmented reality
US8638986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Dec 20, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30244
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reference patch of an unknown environment is generated on the fly for positioning and tracking. The reference patch is generated using a captured image of a planar object with two perpendicular sets of parallel lines. The planar object is detected in the image and axes of the world coordinate system are defined using the vanishing points for the two sets of parallel lines. The camera rotation is recovered based on the defined axes, and the reference patch of at least a portion of the image of the planar object is generated using the recovered camera rotation. The reference patch can then be used for vision based detection and tracking. The planar object may be detected in the image as sets of parallel lines or as a rectangle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.