License plate recognition method and device

A technology of license plate recognition and license plate image, applied in the field of image recognition, can solve the problem of slow recognition of license plate and achieve the effect of improving the recognition speed

Inactive Publication Date: 2018-03-09
PING AN TECH (SHENZHEN) CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a license plate recognition method and

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  • License plate recognition method and device
  • License plate recognition method and device
  • License plate recognition method and device

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[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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.

[0022] The embodiment of the present invention provides a license plate recognition method, figure 1 The flowchart of the license plate recognition method provided by the embodiment of the present invention, such as figure 1 As shown, the method includes step S101 to step S104.

[0023] Step S101, acquiring a license plate image.

[0024] The license plate image includes a clear license plate number image. In order to recognize the license plate faster, the license plate image in this embodiment may be a grayscale photo converted from a color license plate photo...

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Abstract

The invention belongs to the field of image recognition and provides a license plate recognition method and device. The method comprises the steps of acquiring a license plate image; obtaining a plurality of feature vectors in the license plate image through a convolution neural network model; sequentially inputting the plurality of feature vectors into a circulation neural network model so as toobtain a classification value sequence, wherein the classification value sequence comprises a plurality of classification values, and each classification value corresponds to one character in a license plate; determining characters corresponding to the license plate image according to the classification value sequence. According to the invention, feature vectors in the license plate image are directly extracted and classified, so that the whole license plate can be directly recognized. Meanwhile, the characters of the license plate are prevented from being segmented and separately recognized,so that the recognition speed is increased.

Description

technical field [0001] The invention belongs to the field of image recognition, in particular to a license plate recognition method and device. Background technique [0002] In the prior art, license plate recognition has always been one of the research hotspots and key technologies of intelligent traffic management systems. The application of license plate recognition is very extensive, such as automatic highway toll collection, parking lot toll management, criminal investigation and so on. If these license plates are identified manually, a lot of manpower and material resources will be wasted. [0003] The traditional license plate character recognition method first needs to perform character segmentation on the located license plate, then extract character features from a single character, and finally perform pattern recognition. This method has more steps and slower recognition speed. [0004] There is currently no ideal solution in the industry for the slow speed of ...

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Application Information

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IPC IPC(8): G06K9/32
CPCG06V20/63G06V20/625
Inventor 王健宗马进黄章成肖京
Owner PING AN TECH (SHENZHEN) CO LTD
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