Lane departure early warning method and device

Abstract

The invention discloses a lane departure early warning method and a lane departure early warning device and belongs to the field of automobile safety. The method comprises the steps that video images are caught in real time; the caught images are processed, and an angle of left and right lane lines as well as the intersection point of the left and right lane lines and the image bottom edge in the images are obtained; whether a vehicle deviates from the lane or not is judged according to the angle between the left and right lane lines; and if the lane departure is determined, the warning information is output. The device comprises an image catching module, an image processing module, an angle judging module, an intersection point judging module and an output module. The method and the device have the advantage that the lane departure early warning is realized through the processing and the judgment on the angle and the intersection point of the lane lines.

Description

technical field [0001] The invention relates to the field of automobile safety, in particular to a lane departure warning method and device. Background technique [0002] The main purpose of the lane departure warning system is to give the driver a warning in advance when the vehicle deviates from the lane while driving on the highway. The system uses a camera to take pictures to obtain the specific distance of the vehicle relative to the lane line, and uses image processing technology to detect the position of the vehicle in the lane line in real time to determine whether the vehicle has deviated from the lane line. When the vehicle is detected to deviate from the lane line, the system will alert the driver. [0003] Lane departure warning systems are roughly divided into four types: one is based on the current position of the vehicle in the lane (Car's Current Position, referred to as CCP), the second is based on the difference in future deviation (Future Offset Differenc...

AI Technical Summary

Problems solved by technology

At the same time, although the lane line angle warning method based on the above four methods does not need to perform camera parameter calibration, it cannot give an alarm in time when the driver is driving on one side of the lane line.

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