Patent · US Active

Method and device for online calibration of vehicle cameras

US9262828B2 · kind B2 · utility

2Cited by

0References

8Claims

0Family size

Assignee

ESG Elektroniksystem- und Logistik GmbH · DE

Inventors

Christopher Pflug · Hildesheim, DE
Juri Platonov · Winnweiler, DE
Thomas Gebauer · Sunnyvale, US
Pawel Kaczmarczyk · Kaufering, DE

Key dates

Filing date	Jan 17, 2013
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Jan 17, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30252
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for determining the orientation of a video camera attached to a vehicle relative to the vehicle coordinate system is disclosed. Using a video camera an incremental motion is measured based on the optical flow of the video stream. A linear motion component and a rotational motion component are determined. Based on a determined rotational angle the incremental motion is classified as linear or as rotational. The directional vector of the linear motion is used to estimate the longitudinal axis of the vehicle, and the rotational vector of the rotational motion is used for estimating the normal to the vehicle plane. Based thereon the orientation of the camera follows.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.