Automobile video frequency discrimination speed-testing method

Abstract

The invention discloses a vehicle video identification and speed measuring method. The concrete steps are as follows: (a). obtain a vehicle picture; (b). search the partial threshold value of vehicle license plate on the vehicle picture to obtain the license picture; (c). redress the inclination of the license picture; (d). search the frame of the license plate on the redressed picture and calculate the height of characters; (e). standardize characters on the license plate to obtain a number of partial blocks; (f). carry out the binary system for the partial blocks of each character to obtain two-digit pictures; (g). identify characters on the two-digit pictures to obtain characters on the license plate; (h). track the moving route of the license plate through results of step b and d; (i). calculate the moving distance of the vehicle body; and (j). calculate the running speed. The invention has the advantages of high precision of identifying vehicle licenses and low impact on light reflection of license plate, easy realization, and high practical value.

Description

technical field [0001] The invention relates to a method for monitoring whether mobile vehicles violate regulations on highways, in particular to a method for vehicle video recognition and speed measurement. Background technique [0002] With the development of the automobile industry and the continuous improvement of people's living standards, vehicles have become an indispensable means of transportation. A large number of vehicles flood the streets every day, which poses a new problem for traffic management. No matter on ordinary roads or on expressways, illegal vehicles such as speeding will appear, and traffic safety cannot be guaranteed to the maximum extent. In order to alleviate this tense situation, the traffic management department has installed and used an automatic monitoring system on the highway. Most of this system recognizes the license plate number by performing edge extraction, Hough transform, histogram analysis, and calculation of morphological operators o...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the above-mentioned prior art that the recognition rate of fast passing vehicles is low and it is not suitable for real-time application, the purpose of the present invention is to provide a vehicle video recognition speed measurement method that can be detected at any time regardless of day or night

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