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 present invention relates to a method for monitoring whether a mobile vehicle violates regulations on a highway, specifically a vehicle video recognition speed measurement method. 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, and a large number of vehicles flood the streets every day, which poses new issues for traffic management. No matter on ordinary roads or on highways On the highway, there will be speeding and other illegal vehicles, which cannot guarantee the maximum traffic safety. In order to alleviate this tension, the traffic management department installed an automatic monitoring system on the highway. This system mostly extracts the edge of the license plate image. , Hough transform, histogram analysis and the calculation of morphological operators to identify the license plate number. Th...

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Problems solved by technology

[0003] In order to solve the problem of low recognition rate and unsuitability for real-time application in the prior art mentioned above, the object of the present invention is to provide a vehicle video recognition speed measurement method that can be detected at any time during the day or at night.

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