On-vehicle camera calibration device
US6813371B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2000 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An on-vehicle camera calibration device is provided and a method of calibrating an on-vehicle camera easily is carried out by using a calibration indicator other than a three dimensional one. The calibration indicator makes it possible to set camera parameters to form an image on an arbitrary portion of a screen. The calibration indicator is in the form of a planar calibration indicator TB. A camera picked-up image including the calibration indicator TB is displayed on a screen on which a window is also displayed in superposed fashion. The position of the window is changed in a 2D image coordinate system. The position of the window is adjusted by manipulating an adjust button 7 so that the calibration indicator TB falls within the window. When the calibration indicator TB is placed in the window in coincident fashion, the resultant camera parameters (unknown roll &thgr; r, tilt angle &thgr; t, and pan angle &thgr; p) are set as camera parameters of the camera 17.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.