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1. (WO2018202464) CALIBRATION OF A VEHICLE CAMERA SYSTEM IN VEHICLE LONGITUDINAL DIRECTION OR VEHICLE TRANS-VERSE DIRECTION

Pub. No.:    WO/2018/202464    International Application No.:    PCT/EP2018/060393
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: G06T 7/80
B60R 1/00
Applicants: CONNAUGHT ELECTRONICS LTD.
Inventors: CHAH, Ehsan
STARR, Michael
NADELLA, Srikanth
Title: CALIBRATION OF A VEHICLE CAMERA SYSTEM IN VEHICLE LONGITUDINAL DIRECTION OR VEHICLE TRANS-VERSE DIRECTION
Abstract:
The invention relates to a method for calibrating a camera device (4) of a vehicle (1), including a) generating a reference top view (7a- 7d) to an environment (10) of the vehicle (1) from image data of a reference camera (5a-5d) of the camera device (4); b) generating a further top view (9a) to the environment (10) from image data of a further camera (8a) of the camera device (4), wherein the image data of the further camera (8a) is captured in a presettable time interval (Δt) after the image data of the reference camera (5a-5d); c) spatially correlating the reference top view (7a-7d) and the further top view (9a) based on an image comparison of reference top view (7a-7d) and further top view (9a) by a computing unit (6) of the camera device (4); and d) calculating an offset (dx, dy) of the further top view (9a) relative to the reference top view (7a-7d) in a vehicle longitudinal direction (x) or a vehicle transverse direction (y) by the computing unit (6) depending on a result of the correlation; as well as e) automatically calibrating the further camera (8a) relative to the reference camera (5a- 5d) based on the calculated offset (dx, dy) to calibrate the camera device (4) with respect to a position of a camera (8a) of the camera device (4) in automated manner.