A driving assistance method and system

Abstract

The invention provides an auxiliary driving method. The auxiliary driving method comprises the steps that the initial distance, measured by a laser distance measuring instrument, between a target appearing in a preset range for the first time and a vehicle is obtained; an image captured by a camera in real time and including all targets is recognized, and the real-time image widths or heights of the targets are obtained; the real-time distances between the targets and the vehicle are calculated according to the real-time image widths or heights, the initial distance, the lens focal length and the initial image width or height and through a preset distance formula, and whether the real-time distances are smaller than a real-time safety distance or not is judged; and if yes, the position coordinates corresponding to the targets are obtained, and the laser distance measuring instrument is controlled to measure the distances of the targets in real time according to the position coordinates. According to the auxiliary driving method, by combining single-thread laser distance measuring and video distance measuring, the problem of low distance measuring precision in the prior art can be effectively solved, meanwhile, the data processing amount is further reduced, hardware resources are saved, and the using cost is reduced by a large margin.

Description

technical field [0001] The present application relates to the application field of intelligent vehicles, in particular to a driving assistance method, and also relates to a driving assistance system. Background technique [0002] With the rapid development of transportation and the rapid increase of car ownership, road traffic accidents have become a hot topic worldwide. According to relevant statistical data, the driver's fault is the main factor that causes road traffic accidents, and both the total number of accidents and the number of casualties account for more than 90% of the total. Among these factors that lead to traffic accidents, fatigue driving and attention Not concentrating, speeding, and changing lanes at will are the main factors that cause road traffic accidents. When the vehicle is running at high speed, a few seconds of inattention will cause a major traffic accident. The analysis of statistical data shows that 80% of traffic accidents are caused by inatt...

AI Technical Summary

Problems solved by technology

[0006] In view of the problems in the background technology, this application provides an assisted driving method, which uses a combination of single-threaded laser ranging and video ranging to alternately track and measure targets in different situations, effectively solving the existing problems. The problem of low ranging accuracy in the technology also reduces the amount of data processing, saves hardware resources, and greatly reduces the cost of use

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