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License plate character identification method and apparatus

A license plate recognition and character recognition technology, which is applied in the field of image processing, can solve the problems of multiple image information, loss of character images, and reduce the recognition rate of license plate characters, so as to achieve the effect of improving the recognition rate and making the recognition simple.

Active Publication Date: 2017-01-04
NETPOSA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Since the character image needs to be binarized before the character image is recognized, a lot of image information is lost in the character image after the image binarization, and the image binarization itself will also cause noise between the character image and the surrounding background. The image is stuck together, which makes the recognition of the characters difficult and reduces the recognition rate of the license plate characters

Method used

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  • License plate character identification method and apparatus
  • License plate character identification method and apparatus
  • License plate character identification method and apparatus

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Experimental program
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Embodiment 1

[0068] In order to facilitate the understanding of this embodiment, a method for recognizing license plate characters disclosed in this embodiment of the present invention is firstly introduced in detail.

[0069] A license plate character recognition method disclosed in this embodiment is executed by a computing device, and the computing device is used to directly process and recognize the color license plate character image to determine the characters in the color license plate character image.

[0070] The computing device can use any existing computer or server to determine the characters in the color license plate character image, which will not be repeated here.

[0071] see figure 1 , this embodiment provides a license plate character recognition method, the method includes the following steps 100 to 106.

[0072] In the embodiment of the present invention, before step 100 is used to obtain the color license plate character image to be recognized, it is first necessary...

Embodiment 2

[0131] see image 3 , the present embodiment provides a license plate character recognition device for performing the above-mentioned license plate character recognition method, including:

[0132] An image acquisition module 300, configured to acquire a color license plate character image to be recognized;

[0133] An image processing module 302, configured to perform image processing on the acquired color license plate character image;

[0134] The character recognition module 304 is used to recognize the characters in the color license plate character image after image processing through the pre-trained license plate recognition model, and obtain the similarity between the characters in the color license plate character image and the preset characters in the license plate recognition model , where the license plate recognition model is pre-trained through a deep learning network;

[0135] A determination module 306, configured to determine that the preset character with t...

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Abstract

The invention provides a license plate character identification method and apparatus. The method includes steps: obtaining a to-be-identified colorful license plate character image; performing image processing on the obtained colorful license plate character image; identifying characters in the colorful license plate character image after image processing through a pre-trained license plate identification model, and obtaining similarities between the characters in the colorful license plate character image and preset characters in the license plate identification model; and determining the fact that the preset character with the highest similarity and the character in the colorful license plate character image are consistent. According to the license plate character identification method and apparatus, the identification rate of the license plate characters can be increased.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for character recognition of a license plate. Background technique [0002] At present, license plate recognition is based on digital image processing and computer vision and recognition technology, and analyzes the captured vehicle images to obtain the license plate number of each car. With the development of urban traffic, the technology of license plate recognition It has been widely used in the investigation and punishment of vehicle violations and highway tolls. [0003] The process of license plate recognition in the related art includes: obtaining a character image of the license plate, binarizing the acquired character image, and then processing the binarized character image to recognize the characters on the license plate. [0004] In the course of realizing the present invention, the inventor finds that there are at least the following prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/62
CPCG06V20/63G06F18/214
Inventor 温炜谷爱国许健万定锐
Owner NETPOSA TECH
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