Adaptive head lighter turning control algorithm based on lane line detection

A lane line detection and steering control technology, applied in vehicle position/route/altitude control, two-dimensional position/navigation control, non-electric variable control, etc. problems, to achieve the effect of ensuring driving safety and eliminating visual "blind spots"

Active Publication Date: 2018-09-25
NANJING UNIV OF INFORMATION SCI & TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

Because when the car is driving on a curve at night, due to the inability to adjust the axis direction of the headlight, a visual "blind area" often appears on the inside of the curve. This visual "blind area" is caused by the fixed lighting area of ​​the headlight during driving. Yes, the driver's line of sight is restricted within the straight line range of the light beam due to inertia during driving, which will bring huge traffic safety hazards

Method used

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  • Adaptive head lighter turning control algorithm based on lane line detection
  • Adaptive head lighter turning control algorithm based on lane line detection
  • Adaptive head lighter turning control algorithm based on lane line detection

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] Such as figure 1 Shown, the present invention comprises the following steps:

[0019] (1) Image preprocessing: through the determination and division of the region of interest, the calculation amount of the subsequent algorithm is reduced; the contrast of each part of the image is enhanced through linear grayscale processing, and the accuracy of the subsequent detection algorithm is improved; the improved Otsu algorithm is used, Complete image binarization.

[0020] Determination of the area of ​​interest:

[0021] Such as figure 2 As shown, the acquired image is divided into three horizontal areas from top to bottom: the sky area, the far field of view area and the near field of view area. The area height is one-fourth of the image height. Set the far field of view and the near field of view at the bottom of the image as regions of interest. The following ste...

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Abstract

The invention discloses an adaptive head lighter turning control algorithm based on lane line detection. The algorithm comprises the following steps that (1) an image is preprocessed, regions of interest are determined according to structural characteristics of the image, the image is divided than, and contrast of different regions is improved via linear grayscale transformation, and an improved Otsu's method is used to binarize the image; (2) an improved Hough transformation algorithm is used to detect lane lines; (3) a curve fitting and curvature radius is calculated; and (4) according to the parking stadia and the geometric relation between the curve illumination distance and the curvature radius, a head lighter angle adjusting model is established and solved. A head lighter is rotatedto eliminate a visual blind area in the inner side of a curve during driving at night, and the driving safety in the curve at night is ensured.

Description

technical field [0001] The invention relates to an adaptive headlight steering control algorithm, in particular to an adaptive headlight steering control algorithm based on lane line detection. Background technique [0002] With the sharp increase in the number of vehicles, the number of deaths and injuries caused by traffic accidents is also rising. How to reduce the number of frequent traffic accidents has become an urgent problem to be solved in our country. According to reports, 82% of automobile accidents occur in poor lighting conditions at night; at the same time, the number of major accidents during night driving is about 1.5 times that of daytime, and 60% of accidents occur at corners with poor lighting. Because when the car is driving on a curve at night, due to the inability to adjust the axis direction of the headlight, a visual "blind area" often appears on the inside of the curve. This visual "blind area" is caused by the fixed lighting area of ​​the headlight ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02G06K9/00G06K9/32
CPCG05D1/0214G05D1/0221G05D1/0223G05D1/0253G05D2201/02G06V20/588G06V10/25
Inventor 张小瑞徐子茜孙伟宋爱国
Owner NANJING UNIV OF INFORMATION SCI & TECH
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