License plate recognition method and system for increasing license plate recognition rate
A technology of license plate recognition and vehicle management system, which is applied to road vehicle traffic control systems, traffic control systems, instruments, etc., and can solve problems such as difficulty in accurately reading license plates, recognition rate to be improved, and wrong image recognition
Active Publication Date: 2020-11-20
深圳电目科技有限公司
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Problems solved by technology
However, the camera is currently greatly affected by the weather, and it is difficult to accurately read the license plate under conditions of low visibility such as foggy weather and dim environments; for similar letters or numbers, such as the Arabic numeral 0 and the English letter O, errors are prone to occur image recognition
Therefore, the way the camera recognizes the license plate has certain limitations, and the recognition rate needs to be improved
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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit 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.
[0047] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances; in other words, the described em...
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The invention provides a license plate recognition method for increasing the license plate recognition rate. The method comprises the steps that: adopting a server to obtain a first license plate anda second license plate through a camera and an ETC device after a vehicle entering a monitoring range is monitored, and judge whether the two license plates are consistent or not; if the two license plates are consistent, determining that either license plate is a real license plate; if the two license plates are not consistent, dividing the first license plate and the second license plate into aplurality of information segments and setting weights; comparing the information segments one by one, setting the same information segments as a first approximation degree, and setting different information segments as a second approximation degree; multiplying the first approximation degree and / or the second approximation degree of each information segment by the corresponding weights, and addingproduct results to obtain an approximation degree; if the approximation degree is higher than a preset value, adopting the server to output the second license plate as a real license plate; and if the approximation degree is lower than or equal to the preset value, adopting the server to output the first license plate as a real license plate. According to the invention, ETC identification and camera identification are combined, so that the license plate identification rate is increased.
Description
technical field [0001] The invention relates to the technical field of parking management, in particular to a license plate recognition method and system for increasing the license plate recognition rate. Background technique [0002] Using a camera to recognize license plates is a common way to automatically identify license plates. However, the camera is currently greatly affected by the weather, and it is difficult to accurately read the license plate under conditions of low visibility such as foggy weather and dim environments; for similar letters or numbers, such as the Arabic numeral 0 and the English letter O, errors are prone to occur image recognition. Therefore, the way the camera recognizes the license plate has certain limitations, and the recognition rate needs to be improved. Contents of the invention [0003] In view of this, it is necessary to provide a license plate recognition method and system for increasing the license plate recognition rate. [0004...
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IPC IPC(8): G08G1/017G07B15/02G07B15/06
CPCG07B15/02G07B15/06G08G1/0175
Inventor 李昌霖蒋彦波吴超李黎阳
Owner 深圳电目科技有限公司