Method and system for video-based road characterization, lane detection and departure prevention

a video-based road and lane detection technology, applied in the field of image processing methods and systems for roadway scenes, can solve the problems of inability to detect sparsely spaced, white, domed discs, and other conventional approaches, and achieve the effect of preventing lane markings, detecting delineations and objects other than lane markings, and avoiding lane markings

Inactive Publication Date: 2010-04-01
VALEO SCHALTER & SENSOREN
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Problems solved by technology

However, such approaches cannot detect sparsely spaced, white, domed, discs called Botts' dots.
Other conventional approaches are limited to determining the camera distance and yaw angle to lane markings and their curvature.
Such approaches cannot detect delineations and objects other than the lane markings, and are limited to finding a pair of lane markings, one to the left of the vehicle and one to the right.

Method used

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  • Method and system for video-based road characterization, lane detection and departure prevention
  • Method and system for video-based road characterization, lane detection and departure prevention
  • Method and system for video-based road characterization, lane detection and departure prevention

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Embodiment Construction

[0038]The present invention provides a method and system for video-based road characterization, lane detection and departure prevention. In one embodiment, this is a system wherein images of a road ahead of a video camera installed on a moving vehicle are used to find lane markings including lines and dashes on the road surface. The locations of the found marking in the image are combined with camera geometry information to reconstruct where the camera (vehicle) is on the road, measured relative to the markings. The reconstructed camera location information is used to support a driver in driving the vehicle.

[0039]Using a sequence of essentially real-time image frames from the camera, the system further detects delineations and objects, in addition to lane markings. Localization of the road boundary information, and further characterization of the road, are used in detecting lateral location (offset) relative to the boundaries of the road. The system generates essentially real-time i...

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Abstract

A method and system for video-based road departure warning for a vehicle on a road, is provided. Road departure warning involves receiving an image of a road in front of the vehicle from a video imager, and detecting one or more road markings in the image corresponding to markings on the road. Then, analyzing the characteristics of an image region beyond the detected markings to determine a rating for drivability of the road corresponding to said image region, and detecting the lateral offset of the vehicle relative to the markings on the road based on the detected road markings. A warning signal is generated as function of said lateral offset and said rating.

Description

RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. 119(e) from U.S. Provisional Patent Application Ser. No. 60 / 897,082, filed Jan. 23, 2007, incorporated herein by reference. This application further claims priority under 35 U.S.C. 119(e) from U.S. Provisional Patent Application Ser. No. 60 / 897,225, filed Jan. 23, 2007, incorporated herein by reference. This application further claims priority under 35 U.S.C. 119(e) from U.S. Provisional Patent Application Ser. No. 60 / 897,219, filed Jan. 23, 2007, incorporated herein by reference. This application further claims priority under 35 U.S.C. 119(e) from U.S. Provisional Patent Application Ser. No. 60 / 897,220, filed Jan. 23, 2007, incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to image processing methods and systems for roadway scenes, for use in vehicles.BACKGROUND OF THE INVENTION[0003]Images from a video camera installed on a vehicle are used in certain conventional ap...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N7/18B60Q1/00
CPCG06K9/00798G06T7/2033G06T7/60G06T7/246G06V20/588
Inventor KUEHNLE, ANDREASBOON, CATHY
Owner VALEO SCHALTER & SENSOREN
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