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Auxiliary method and device for keeping lane for driver

A lane keeping and driver technology, applied in the field of driver lane keeping assist methods and devices, can solve the problems of poor weather conditions and road environment adaptability, low accuracy, etc., to improve efficiency, reduce false alarm rate, simplify The effect of the identification process

Inactive Publication Date: 2007-04-11
JIANGSU UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the limitation of the method, bad weather conditions and road environment may make the adaptability of the scheme not good, and the accuracy rate is not high

Method used

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  • Auxiliary method and device for keeping lane for driver
  • Auxiliary method and device for keeping lane for driver

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Embodiment Construction

[0035] The driver's lane keeping assist device includes a CCD camera, an electric control unit (ECU) and an alarm unit. The CCD camera is used to take pictures of the lane of the road and output image signals. The electronic control unit (ECU) receives image signals from the CCD camera and According to the preset logic processing to determine whether the vehicle has moved out of the lane, and the alarm component is used to output a warning signal according to the signal sent by the ECU.

[0036] In vehicle driving state monitoring technology, the basic element is to output a warning signal in real time when the vehicle deviates from the lane. Delayed warning signals can have unintended consequences. In system design, the real-time performance of image processing and the accuracy of state recognition are a pair of contradictory unity. Image signal data requires powerful computing power to process image signals in real time, while reducing the false alarm rate and reducing the s...

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Abstract

The auxiliary method and device for driver to keep lane relates to traffic engineering technology. The technological scheme includes the following steps: taking lane image during driving with a CCD camera and transmitting the image to a processor; processing the image signal with an image treating process to calculate the gradient vector value of the image brightness function, establish edge distribution function (EDF), create histogram and determine the maximum value position and symmetric axis position of the histogram; processing the obtained EDF local maximum position and the symmetric axis position in the control unit and comparing the tested parameter and preset threshold value to judge the deviation of the vehicle to the lane. The present invention is not affected by the optical lens, lane width, vehicle type and other parameters and has simplified distinguishing process and high efficiency.

Description

technical field [0001] The present invention relates to the technical field of traffic and transportation engineering, in particular to a driver's lane keeping assistance method and device, that is, by monitoring changes in real-time road images to understand the posture of the vehicle, judge whether there is a tendency to deviate from the lane, and issue an early warning message , to ensure driving safety. Background technique [0002] Drivers often lose control of the direction of the vehicle when they are driving fatigued, distracted by the surrounding things, answering mobile phones, or taking care of minors in the car, resulting in changes in driving posture. The notable feature is lane departure. According to this feature, Wang Rongben, Yu Tianhong and others introduced several machine vision-based lane departure warning systems in the "Research Review of Lane Departure Warning System Based on Machine Vision" published in Automotive Engineering Volume 27, No. 4, Novemb...

Claims

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Application Information

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IPC IPC(8): G01C11/00G01C11/36G01B11/00B60W30/12
Inventor 刘志强赵艳萍陈彦博
Owner JIANGSU UNIV
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