License plate recognition and intelligent error correction method and system

A technology of license plate recognition and error correction method, applied in the field of license plate recognition intelligent error correction methods and systems, can solve the problems of poor pertinence in the review and correction work of license plate recognition, and achieve the effect of shortening the time spent and improving work efficiency

Active Publication Date: 2015-03-25
NANJING ZNV SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the technical problem to be solved by the present invention is to provide an intelligent error correction method and system for license plate recognition to solve the problem t

Method used

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  • License plate recognition and intelligent error correction method and system
  • License plate recognition and intelligent error correction method and system
  • License plate recognition and intelligent error correction method and system

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0044] Example one

[0045] Such as figure 2 As shown, the intelligent error correction method for license plate recognition provided by the embodiment of the present invention is applied to a data collection server, and the method includes the following steps:

[0046] S101. After receiving the passing record, obtain the recognized license plate.

[0047] Specifically, the data collection server records each vehicle pass and obtains the license plate number recognized by the camera or the video analysis server.

[0048] S102. Compare and analyze the recognized license plate with the preset camera license plate character credibility rule table in the database, and calculate the credibility of the recognized license plate, the suspect license plate and the credibility of the suspect license plate.

[0049] See image 3 , This step S40 further includes:

[0050] S1021, for each character of the license plate, query the credibility of the character from the camera license plate character c...

Example Embodiment

[0062] Example two

[0063] Such as Image 6 As shown, the intelligent error correction method for license plate recognition provided by the preferred embodiment of the present invention includes the following steps:

[0064] S10. Preset the credibility rule table of license plate characters.

[0065] Specifically, this step S10 further includes: presetting a global license plate character credibility rule table in the database; setting a camera license plate character credibility rule table in the database.

[0066] Among them, the global license plate character credibility rule table (such as Figure 4 ) Including fields: license plate characters, characters appearing position, credibility, suspected characters and the credibility of suspected characters. The initial data comes from the long-term statistical conclusions of the license plate recognition camera models that have been put into production. You can manually count or use professional Statistical tools. If you use manual s...

Example Embodiment

[0088] Example three

[0089] Such as Figure 7 As shown, an intelligent error correction system for license plate recognition provided by a preferred embodiment of the present invention includes a license plate acquisition module 10, a calculation module 20, a storage module 30, a query module 40, a feedback module 50, and a correction module 60, wherein:

[0090] The license plate obtaining module 10 is used to obtain the recognized license plate after receiving the passing record;

[0091] The calculation module 20 is used to compare and analyze the recognized license plate and the camera license plate character credibility rule table set in the database, and calculate the credibility of the recognized license plate, the suspect license plate and the credibility of the suspect license plate;

[0092] Preferably, the calculation module 20 includes a first calculation unit 201 and a second calculation unit 202, wherein:

[0093] The first calculation unit 201 is used to query the credi...

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Abstract

The invention discloses a license plate recognition and intelligent error correction method and system, and belongs to the technical field of intelligent traffic. The method includes the steps that a recognized license plate is obtained after a vehicle passing record is received; the recognized license plate is compared with a camera license plate character credibility rule list preset in a database and is analyzed to calculate credibility of the recognized license plate, uncertain license plates of the license plate and credibility of the uncertain license plates; the credibility of the recognized license plate, the uncertain license plates of the license plate and the credibility of the uncertain license plates are stored in a vehicle passing record chart. By means of the method and system, the credibility of the recognized license plate, the uncertain licenses of the license plate and the credibility of the uncertain license plates are stored in the vehicle passing record so that wrong license plates can be quickly positioned and recognized, the correctly-recognized license plate is omitted, time for recording passing vehicles and checking and correcting license plates can be effectively shortened under the situation that license plate accuracy index control is given, and work efficiency of checking and correction is greatly improved.

Description

technical field [0001] The invention relates to a network device identification method, in particular to an intelligent error correction method and system for license plate recognition. Background technique [0002] In the field of intelligent transportation, a passing record refers to the data record of a vehicle passing through a certain place at a certain time. The basic data includes the license plate number, driving time, and driving location. The road capture camera will also report the driving speed and license plate type. , Whether it is illegal, passing car images and other information. This kind of road capture camera is generally based on an ordinary video camera with an additional intelligent analysis program, and has stronger capture speed, computing power and data storage capacity. General license plate recognition cameras can achieve recognition accuracy of 85-95% during the day and 80%-90% at night, and the adaptable speed is generally below 80km / h. The lice...

Claims

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Application Information

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IPC IPC(8): G08G1/017
CPCG08G1/017
Inventor 董平姚开方
Owner NANJING ZNV SOFTWARE CO LTD
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