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A Lane Departure Warning Method Based on Hough Transform

A lane departure warning and Hough transform technology, applied in the field of computer vision, can solve problems such as detection errors, false alarms, and reduced system accuracy, and achieve the effects of improving robustness, accuracy, and reliability

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there are interference objects or blurred lane lines, it may lead to detection errors, greatly reducing the accuracy of the system, and prone to false alarms
Not only that, factors such as weather and light can easily affect the accuracy of the system

Method used

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  • A Lane Departure Warning Method Based on Hough Transform
  • A Lane Departure Warning Method Based on Hough Transform
  • A Lane Departure Warning Method Based on Hough Transform

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Experimental program
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Effect test

Embodiment

[0056] refer to figure 1 , the lane departure warning method based on Hough transform proposed by the present invention comprises the following steps:

[0057] S1. Collect a video image through a camera, and segment a region of interest (hereinafter referred to as ROI region). Delineate the lower half of the image as the region of interest to reduce the impact of irrelevant regions on the algorithm.

[0058] S2, process the image frame collected, convert the RGB color image into a grayscale image, the result is as follows figure 2 As shown, the calculation formula is as follows:

[0059] I(u,v)=0.299*I R (u,v)+0.587*I G (u,v)+0.114*I B (u,v)

[0060] Intercept the grayscale image of the region of interest, the result is as follows image 3 shown. Use the improved one-way gradient operator to detect the edge of the lane line, and the calculation formula is as follows:

[0061] f(u,v)=2×I(u,v)-I(u+S,v)-I(u-S,v)-|I(u+S,v)-I(u-S,v)|

[0062] Wherein, the parameter S con...

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Abstract

The invention discloses a lane departure warning method based on Hough transform. The method firstly divides an image into a region of interest; then grayscales the image of the region of interest; uses an improved one-way gradient operator to edge The edge image is detected; the image is binarized by the Otsu algorithm; the candidate straight line set is obtained by Hough transform, which is divided into left and right lane straight line sets according to the slope, and the two straight line sets are respectively combined with random samples by vanishing point constraints Consistency algorithm screening to obtain the best left and right lane line parameters; construct two Kalman filters to track the left and right best lane lines respectively; finally use the slope of the left and right lane lines to estimate the relative lateral offset and its changing trend, and identify lane departure And be warned. The invention can effectively identify the lane departure problem in driving, and improve the robustness and real-time performance of the lane departure warning system.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a lane departure warning method based on Hough transform. Background technique [0002] Along with the continuous development of society and the continuous improvement of the national economy, the number of cars is increasing day by day. Due to the large population base in our country, the sharp increase in the number of cars has led to a high incidence of traffic accidents, which has caused huge losses to the national economy and even threatened personal safety. According to the results of relevant investigations, the causes of traffic accidents are rarely caused by bad weather and the road itself, and more are caused by the driver's own problems, and lane departure is one of the main reasons. [0003] Most of the current lane departure warning systems are developed based on computer vision technology, and generally can only play an effective role on roads with clear la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V20/56
CPCG06V20/588
Inventor 林耀荣赵雪灿张巧灵
Owner SOUTH CHINA UNIV OF TECH