License number identification method and device

Abstract

The invention relates to a license number identification method and device. The method comprises the steps: a sample license number obtained by performing identification for a license plate image on a first preset position is acquired, and the sample license number is recorded in a license plate white list; an initial license number obtained by performing identification for a license plate image on a second preset position is acquired, and the license plate image shot on the first preset position has higher definition than the license plate image shot on the second preset position; the initial license number and the sample license number in the white list are performed a similarity match process to acquire a corresponding similarity value; when the similarity value meets a preset similar condition, the license number in the license plate image shot on the second preset position is identified as the sample license number corresponding to the similarity value. According to the invention, the identification accuracy of the license number in the license plate image can be improved.

Description

technical field [0001] The present application relates to the technical field of identification, in particular to a method and device for identifying a license plate number. Background technique [0002] With the continuous growth of vehicle ownership and traffic volume, Intelligent Transportation System (Intelligent Transportation System, referred to as ITS), as a commonly used management system, involves a wide range of fields, mainly including road condition collection, vehicle identification, violation processing, self-service Payment and other modules, through digital technology to achieve information exchange between modules. [0003] As the most important means of determining vehicle identity in the field of intelligent transportation, license plate number recognition technology usually plays different roles according to different application scenarios. Since each application scenario has different requirements for the license plate recognition technology, the licens...

AI Technical Summary

Problems solved by technology

At present, license plate images in various application scenarios can be recognized. For images with relatively high definition, the accuracy of the recognized license plate number is relatively high. However, for some license plate images with relatively low resolution, such as license plate images taken in garages , the error rate of the recognized license plate number is relatively high

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