Ramp speed limit recognition method and device

Abstract

The invention discloses a ramp speed limit recognition method, which comprises steps: the speed limit sign information recognized from an acquired road image is obtained; based on the speed limit information, whether the speed limit information is ramp speed limit information is judged; if yes, the lane information, the route planning information, the traffic light information and the environmentinformation of the vehicle are obtained; according to the lane information, the route planning information, the traffic light information and the environment information, whether the vehicle enters aramp driving-in preparation state is judged; and if the vehicle is determined to enter the ramp driving-in preparation state, based on the ramp speed limit information, a speed limit value of the vehicle is determined and prompted. According to the method and the device provided in the invention, the correct recognition rate of the ramp speed limit recognition scheme can be improved, missed reportand error report risks can be reduced, and the driving experience of a driver can be improved. When the vehicle is overspeed after entering the ramp, the vehicle speed is limited below the ramp speedlimit, and the driving safety factor of the vehicle is improved.

Description

technical field [0001] The invention relates to the field of ramp speed limit recognition, in particular to a method for ramp speed limit recognition. Background technique [0002] With the application of Advanced Driving Assistant System (ADAS) on vehicles, its sub-function Intelligent Traffic Sign Recognition System (Traffic Sign Recognition, TSR) has also entered people's field of vision. Both the national standard and the European New Car Safety Evaluation Association have relevant technical requirements for the TSR system. The in-depth optimization of the TSR system from basic functions to intelligence has become a consensus in the industry. The performance of the current mainstream TSR system at the ramp intersection of the expressway is not satisfactory. Regardless of whether the vehicle enters the ramp or not, regardless of whether the speed limit sign is only for entering the ramp, as long as the speed limit sign is detected and recognized, TSR The system will disp...

AI Technical Summary

Problems solved by technology

[0003] In the existing technical solution, the main principle is to speculate whether to display the recognized speed limit sign based on the lateral distance of the speed limit sign, road type, vehicle speed, turn signal and brake pedal information, which reduces the above-mentioned speed limit sign to a certain extent. False positives in the scene but cannot avoid the occurrence of false positives

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