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License plate identification method and system

A license plate recognition and license plate technology, applied in the field of image processing

Active Publication Date: 2015-03-04
SHENZHEN JIESHUN SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a license plate recognition method and system to solve the problem of missed and misrecognized license plates in the prior art and improve the accuracy of license plate recognition

Method used

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  • License plate identification method and system
  • License plate identification method and system
  • License plate identification method and system

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] figure 1 It is a flow chart of the license plate recognition method provided by the embodiment of the present invention. The license plate recognition method judges the license plate similarity between the license plate currently being recognized and the previous license plate that has been recognized, and calculates the vehicle corresponding to the license plate currently being recognized and the previous license plate. One has completed the judgment o...

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Abstract

The embodiments of the invention provide a license plate identification method and system. The license plate identification method comprises the following steps: obtaining a license plate image, and determining a license plate character identification result of a currently identified license plate; when the obtained license plate image satisfies a preset condition, through the license plate character identification result of the currently identified license plate and the license plate character identification result of the last already identified license plate, determining whether the currently identified license plate and the last identified license plate are similar license plates; and if the two are similar license plates, obtaining a first running locus of a corresponding vehicle of the currently identified license plate and a second running locus of a corresponding vehicle of the last identified license plate, calculating the coincidence degree of the first running locus and the second running locus, if the coincidence degree of the first running locus and the second running locus is smaller than a certain threshold, determining that the currently identified license plate and the last identified license plate are license plates of different vehicles, and otherwise, determining that they are the license plates of the same vehicle.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a license plate recognition method and system. Background technique [0002] The license plate is the "identity card" number of the vehicle. Through the license plate, many important information of the vehicle can be detected, such as the province, city, county to which the vehicle belongs, and the owner of the vehicle. In order to bring convenience to the management of the parking lot, the license plate recognition equipment used to identify the license plate has been widely used in the entrance and exit of the parking lot, the entrance and exit of the commercial building, etc., and the license plate recognition technology used by the license plate recognition equipment is becoming more and more mature. [0003] The license plate recognition method of the license plate recognition equipment in the prior art recognizes the license plates appearing in the monitoring screen one by o...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06T7/20
CPCG06T7/285G06V10/768
Inventor 唐健李昕李锐
Owner SHENZHEN JIESHUN SCI & TECH IND
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