Early warning system and method for driving in fog and missing road signs based on machine vision

Abstract

The invention is based on a machine vision early warning system and method for driving in fog and missing road signs, and belongs to the technical field of intelligent vehicle safety assisted driving. The present invention constructs a real-time road sign recognition early warning strategy by means of a road traffic sign recognition classifier, a road traffic sign character classification recognition neuron network classifier, a driver fatigue pattern classifier, a fog-free image classifier, and an image defogging model . According to the driver's gaze trajectory, blink frequency, and PERCLOS value, if it is judged that the driver is fatigued or misses traffic sign information due to performing secondary tasks during driving, the car speaker will issue a sound warning of real-time sign information and display it on the car display. Display the warning sign information, and if it is judged to be foggy, it will also provide the driver with visual and auditory warnings, so that the driver can obtain road traffic sign information and driving safety warnings under the conditions of foggy weather and drivers missing road signs .

Description

Technical field [0001] The present invention mainly relates to the technical field of intelligent vehicle safety assisted driving, and in particular relates to an early warning system and method for missing road signs based on machine vision when driving in a foggy day. Background technique [0002] Traffic signs provide drivers with information on road conditions and traffic conditions, which are of great significance for reducing road traffic accidents. According to statistics, there are as many as 30 million violations of the law each year due to failure to follow traffic instructions. Traffic accidents caused by drivers not obtaining road marking information account for a considerable proportion of all traffic accidents, and the proportion remains high. A considerable part of the reason is: due to driver fatigue or performing sub-tasks during driving, the road warning signs are missed; poor light at night and foggy weather cause low visibility, which can also cause drivers to...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an early warning system and method based on machine vision for driving in fog and missing road signs, which is used to solve the problem of driver fatigue driving, missing road signs during driving, or missing road signs due to night driving. Poor light and low visibility in foggy weather lead to drivers not knowing the road traffic environment information, which leads to technical problems of road traffic accidents

[0005] The invention makes up for the following defects of the existing vehicle-mounted GPS navigation system in obtaining road sign information: if the GPS navigation system is not updated in time, there will be navigation errors, slow speed and low accuracy in obtaining information in some unstructured road areas.

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