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License plate error correction method based on license plate similarity

An error correction method and similarity technology, applied in traffic control systems, instruments, traffic control systems of road vehicles, etc., can solve the problem of license plate defacement from shooting angles, license plate number recognition errors, and the recognition rate of license plate recognition. 100% perfect recognition and other issues, to achieve the effect of reducing research and development costs, improving accuracy, and avoiding errors in license plate recognition

Active Publication Date: 2019-03-26
ANHUI SUN CREATE ELECTRONICS
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Problems solved by technology

However, the recognition rate of license plate recognition has not dared to say that there is a 100% perfect recognition. Defacement, etc., resulting in the wrong recognition of the license plate number. Obviously, there is still a lot of room for improvement in the current license plate recognition system

Method used

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  • License plate error correction method based on license plate similarity

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Embodiment Construction

[0020] For ease of understanding, combined here figure 1 , the specific process and working methods of the present invention are further described as follows:

[0021] Workflow of the present invention refers to figure 1 As shown, it mainly includes the following steps:

[0022] S1. Download the vehicle passing information from the data source, filter the license plates that do not conform to the license plate naming rules, and record the vehicle passing information corresponding to each remaining license plate number to form statistical data; the vehicles recorded in the statistical data Passing vehicle information shall include the vehicle's license plate number, passing time, latitude and longitude of the passing checkpoint, name of the passing checkpoint and serial number of the passing checkpoint.

[0023] S2. Analyzing similar license plates by license plate numbers, recording similar license plates in a list or an array, that is, in the same group of similar license p...

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Abstract

The invention belongs to the field of intelligent transportation technologies of safe city and smart city projects, and specifically relates to a license plate error correction method based on licenseplate similarity. The method provide by the invention comprises the steps that the vehicle passing information of each vehicle is acquired from a data source, and license plates which do not conformto license plate naming rules are filtered out to form statistical data; according to similar license plate number analysis, the corresponding number of each license plate number in the same group ofsimilar license plate set is counted, and proportion comparing of corresponding number of each license plate number is carried out; the vehicle passing time difference between the correct license plate and each similar license plate in the same group of similar license plate set and the distance between vehicle passing gates, so as to acquire the required speed of a vehicle from one gate to the other gate; the maximum travel speed threshold Vmax of vehicles is set, and if Vmax is less than or equal to V, correcting is carried out; and if V is greater than Vmax, correcting is not carried out. According to the invention, inaccurate vehicle passing information is corrected and identified, and the accuracy of vehicle passing data is improved.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation of safe city and smart city projects, and specifically relates to a license plate error correction method based on the similarity of the license plate. Background technique [0002] As we all know, the license plate number of a vehicle is the "unique identity" of the vehicle. License plate recognition technology can realize automatic registration and verification of vehicle identity without any modification of the vehicle. This technology has been applied to highway toll collection, parking management, weighing system, traffic guidance, traffic law enforcement, highway inspection, vehicle scheduling, detection and other occasions. In the current construction of safe cities and smart cities, license plate recognition has become the top priority of construction. The traditional license plate recognition is through license plate extraction, image preprocessing, feature extraction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/017
CPCG08G1/017
Inventor 武永涛范联伟余保华张跃刘春珲陈钊周春寅胡兴谢伟杨先河宋冕冕胡斌陈海翔
Owner ANHUI SUN CREATE ELECTRONICS
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