Vehicle ranging and collision early warning method based on monocular vision

Abstract

The invention discloses a vehicle ranging and collision early warning method based on monocular vision. Firstly, a target dynamic video is collected through a monocular camera, each frame of the collected video is subjected to image preprocessing, then, the characteristics of an image is compared with positive sample characteristics obtained by training to detect a target, and the target is marked by a rectangular frame. The midpoint coordinate of the bottom edge of the rectangular frame is obtained, and a practical distance between two vehicles can be obtained according to pinhole imaging and the geometric proportion relationship of similar triangles; and according to the distance change of two vehicles within a given time, the relative speed is calculated, the collision time is calculated by combining with the distance, and a voice alarm is given when the time is smaller than the collision safety time so as to prompt a drive to adopt a corresponding measure. The vehicle ranging and collision early warning method only adopts one camera to collect videos, so that equipment is simple, an adopted target detection method has the advantages of being high in accuracy and instantaneity, a ranging method is simple and effective, timely early warning is realized, and traffic accidents are effectively avoided.

Description

technical field [0001] The invention belongs to the field of automobile auxiliary safe driving, and in particular relates to a method for vehicle ranging and collision warning based on monocular vision. Background technique [0002] With the rapid development of my country's economy and technology, a huge market with great development potential has formed in the field of automobiles and vehicle-mounted equipment. According to the data of the National Bureau of Statistics, at the end of 2012, the number of civilian vehicles in the country reached 120.89 million, an increase of 14.3% over the end of the previous year. At the same time, the problem of driving safety has become increasingly prominent, and traffic accidents have occurred frequently, which has become a hot spot of concern to the whole society. In 2013, more than 60,000 people were killed or injured due to traffic accidents in my country. If the driver knows the hidden dangers 1.0s earlier, 90% of traffic acciden...

AI Technical Summary

Problems solved by technology

[0006] In the current mobile electronic devices, there is still a lack of monocular ranging devices based on car safety driving systems to ensure driving safety on highways

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