Error correction method for automatic recognition of license plate number by traffic capture

A technology for automatic identification of license plates and license plate numbers, applied in the field of intelligent transportation, can solve problems such as light sensitivity, failure to issue, and affect the accuracy of license plate character recognition, and achieve the effect of rapid error correction and improved accuracy

Active Publication Date: 2017-05-10
广东启功实业集团有限公司
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Problems solved by technology

However, the automatic license plate number recognition equipment is sensitive to light, and the similarity of certain characters, the defacement and occlusion of the license plate itself, and the excessive speed of the vehicle will all affect the accuracy of license plate character recognition.
These factors lead to a large amount of wrong license plate number data in the vehicle passing record, and even some recognized license plate numbers have not yet been issued

Method used

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  • Error correction method for automatic recognition of license plate number by traffic capture
  • Error correction method for automatic recognition of license plate number by traffic capture
  • Error correction method for automatic recognition of license plate number by traffic capture

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Embodiment Construction

[0030] Refer to attached figure 1 , 2 :

[0031] The error-correcting method of automatic recognition license plate number of traffic capture of the present invention, implementation steps are as follows:

[0032] Step 1, error detection;

[0033] 11. Match the license plate number in the vehicle passing record with the existing issued license plate number. If the license plate number in the passing vehicle record fails to match the issued license plate number, it means that the license plate number is recognized incorrectly and needs to be corrected; if the matching is successful, It is not possible to directly judge that the recognition is correct, and the following methods need to be used for further verification;

[0034] 12. Assuming that a certain license plate number is successfully matched in the above step 11, the next step is to further verify whether the license plate number is correctly identified; it can be obtained from a vehicle passing record that the vehicl...

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Abstract

The invention discloses a method of correcting a license plate number automatically recognized in traffic snapshot. The method comprises steps: 1, error detection is carried out: license plate numbers in vehicle passing records are matched with the existing already-issued license plate numbers; and if a certain license plate number succeeds in matching in the above step, whether the license plate number is correctly recognized is verified next; and 2, error correction is carried out: through carrying out the above error detection on the license plate numbers, a large number of wrongly-recognized license plate numbers are obtained, and the error correction process is to correct the wrongly-recognized license plate numbers to be actually true license plate numbers of vehicles.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to an error correction method for automatically identifying license plate numbers by taking traffic snapshots. Background technique [0002] At the intersections of many roads in the city, automatic recognition equipment for license plate number capture is installed to collect vehicle passing records. Vehicle passing record refers to the data record of a vehicle at a certain time and a certain location, including the vehicle license plate number, vehicle speed, passing time and location, etc. The current automatic license plate number recognition equipment mainly obtains the license plate image through camera capture, and then automatically recognizes the license plate characters to obtain the license plate number. However, the automatic license plate number recognition equipment is sensitive to light. The similarity of certain characters, the defacement and occlusion of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/017G06K9/00
Inventor 董红召刘晴辉陈宁刘冬旭郝伟娜
Owner 广东启功实业集团有限公司
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