License plate recognition method and device and storage medium

A license plate recognition and license plate technology, which is applied in the computer field, can solve the problems of low accuracy of license plate recognition model recognition, and achieve the effect of improving sensitivity and expanding the scope of use.

Pending Publication Date: 2022-03-25
SUZHOU KEDA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a license plate recognition method, equipment and storage medium, which can solve the problem that the license plate recognition model needs to be trained using a l

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  • License plate recognition method and device and storage medium
  • License plate recognition method and device and storage medium
  • License plate recognition method and device and storage medium

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Embodiment Construction

[0045] The specific implementation manners of the present application will be further described in detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0046] First, several terms involved in the embodiments of the present application are introduced.

[0047] License plate recognition model: recognize the license plate information in the target image, including the type of characters and the arrangement order of each character.

[0048] Character detection model: Detects the type of character and the location of the character in the target image.

[0049] Anchor: A frame of different sizes and different aspect ratios preset on the image in advance. When performing target prediction on an image, the position of the target in the image is determined based on the prior box.

[0050] Intersection over Union (IOU): The ratio between the inters...

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Abstract

The invention relates to a license plate recognition method and device and a storage medium, and belongs to the technical field of computers. The target image is input into a pre-trained character detection model, character information in the target image is obtained, and first sample data used when the character detection model is trained is smaller than first sample data used when the license plate recognition model is trained; performing position sorting on the characters according to the position information to obtain license plate information in the target image; the problems that a license plate recognition model needs to be obtained by training a large amount of sample data, and the license plate recognition accuracy of the trained license plate recognition model is low under the condition that the collected sample data is less can be solved; the first sample data used during character detection model training is less than the first sample data used during license plate recognition model training, so that the first sample data required during training is reduced, and the application range of the license plate recognition method can be expanded.

Description

【Technical field】 [0001] The application relates to a license plate recognition method, device and storage medium, belonging to the field of computer technology. 【Background technique】 [0002] With the continuous development of license plate recognition technology and the rapid improvement of computer computing power, license plate recognition technology is widely used in scenarios such as automatic driving, assisted driving, and parking lot management. License plate recognition refers to the technology of extracting and displaying the text in the license plate area of ​​the vehicle image. [0003] The traditional license plate recognition method includes: using sample data to train the initial network model based on deep learning to obtain the license plate recognition model. In the process of license plate recognition, the collected target image is input into the license plate recognition model to obtain the license plate information corresponding to the target image dat...

Claims

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Application Information

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IPC IPC(8): G06V20/54G06V20/62G06V30/19G06V30/26G06K9/62G06N3/04G06N3/08
CPCG06N3/08G06N3/047G06N3/045G06F18/2415G06F18/241
Inventor 葛鹤银满志朋薛莹赵诗宇吴家新朱林
Owner SUZHOU KEDA TECH
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