Registration method suitable for license plate recognition

A technology for license plate recognition and image registration, which is applied in character and pattern recognition, image data processing, instruments, etc. It can solve the problems of blurred and misidentified photos of license plate recognition, and achieve the effect of good feature invariance.

Inactive Publication Date: 2019-11-26
邵曦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the current license plate recognition has the problem of blurring when taking pictures and misrecognition during the use process, and the purpose is to provide a registration method suitable for license plate recognition to solve the above problems

Method used

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Embodiment

[0022] The present invention is applicable to the registration method of license plate recognition, comprises Harris corner algorithm and image registration process, also comprises the following steps:

[0023] S1, obtain the license plate information and perform preprocessing, collect sample images through the camera at a rate of 10-30 images per hour, and then select an optimal image in each sampling interval to form registration according to the parameters of definition and noise. The image set, and the rest of the images are used as the source images for testing;

[0024] S2, perform the same preprocessing on the source image and the registered image, and use basic statistical features to perform preliminary image rotation, translation, and scale transformation to remove redundant noise;

[0025] S3, using the Harris corner algorithm to perform Harris corner detection on the source image and the registration image, and record the corner coordinates;

[0026] S4, take the ...

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Abstract

The invention discloses a registration method suitable for license plate recognition, and relates to a vehicle recognition registration method, which comprises a Harris corner algorithm and an image registration process, and further comprises the following steps: S1, obtaining license plate information, preprocessing the license plate information, and setting a registration image set of a source image set; S2, carrying out the same preprocessing of the source image and the registration image, and removing the redundant noise; S3, performing Harris corner detection on the source image and the registration image by using a Harris corner algorithm, and recording corner coordinates; S4, setting a registration area; S5, calculating a correlation coefficient of a registration area of the sourceimage and the registration image; S6, judging the matching degree of the source image and the registration image by using the correlation coefficient; and S7, entering an image registration process. According to the registration method, the problem of fuzzy compensation during photographing in the use process of license plate recognition can be effectively solved, and an ideal registration image set is obtained; and the registration method has good feature invariance, uniqueness, stability and independence.

Description

technical field [0001] The invention relates to a registration method for license plate recognition, in particular to a registration method suitable for license plate recognition. Background technique [0002] Image registration is the process of superimposing two or more images of the same scene obtained by different time, different viewing angles, and different sensors. At present, the license plate recognition has the problem of blurring when taking pictures during use, and there is a problem of misrecognition. Contents of the invention [0003] The technical problem to be solved by the present invention is that the current license plate recognition has the problems of blurring when taking pictures and misrecognition during the use process. The purpose is to provide a registration method suitable for license plate recognition to solve the above problems. [0004] The present invention realizes through following technical scheme: [0005] The registration method suitab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
CPCG06T7/337G06V20/625
Inventor 邵曦
Owner 邵曦
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