Method for calibrating the initial position and the orientation of one or several mobile cameras
US6594600B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1999 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2210/303
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of calibrating a camera (4, 22) disposed on a mobile support (21). The camera takes an image of a test object formed of at least three marks appearing in the field of the camera, and analysis of the image gives the initial position and orientation of the camera with respect to that of the test object, which are known in an application. The support (21) can then be moved towards an object (28) of which the camera takes images. As the movements of the support are measured accurately, analysis of the images of the object gives the precise position and orientation of the object with respect to the camera and with respect to the test object. One application is the recording of road signs (28) in order to compose databases for network management or for an on-board navigation system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.