Method and device for detecting vehicle deviation from lane

Abstract

The present invention discloses a method and device for detecting vehicle deviation from a lane. The method comprises the steps of generating a first image signal through a linear array image sensor installed on a vehicle according to lane line situations and lane situations in front of the vehicle and generating a second image signal according to the lane line situations and the lane situations in front of the vehicle a preset time after the first image signal is generated; generating an absolute value of a lane line slope according to the first image signal and the second image signal, judging that the vehicle deviates from a lane when the absolute value of the lane line slope is larger than a preset threshold value, and generating vehicle lane-deviation information; and outputting the vehicle lane-deviation information. According to the method and the device, the image signals are generated by the linear array image sensor, the data size is small, the processing speed is high, an image output frame rate is high, the extendibility is good, the cost is low, the detection is simple and easy to realize, and alarms can be timely and accurately given.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method for detecting vehicle deviation from a lane and a device for detecting vehicle deviation from a lane. Background technique [0002] Accompanied by the birth of automobiles, automobile safety research has always been one of the hot spots in automobile research. In addition, with the progress of society and the rapid development of economy, people's requirements for traffic efficiency are increasing day by day, the number of cars in the world is increasing, and car accidents are also on the rise. This also makes automobile traffic safety a global research topic. Then a variety of electronic equipment for active safety of automobiles emerged at the historic moment, and the lane departure detector is one of them. [0003] There are various lane deviation detectors in the related art, but most of them are based on the same technical solution, that is, by installing an area...

AI Technical Summary

Problems solved by technology

[0005] First, the lane departure detector designed with this technical solution needs to use one or more area array image sensors as signal acquisition equipment, plus other equipment such as displays and controllers, and the cost is relatively high

[0006] Second, in this technical solution, an area array image sensor is used for image acquisition. Due to the large amount of data, a dedicated DSP chip is required for data processing, and the scalability is poor.

[0007] Third, the camera in this technical solution uses an area array sensor, and the processed data is the entire image. The large amount of data leads to low processing speed. Currently, the image output can only reach 30 frames per second.

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