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License plate positioning method

A license plate positioning and license plate technology, which is applied to instruments, character and pattern recognition, computer parts, etc. Effect

Inactive Publication Date: 2016-06-15
江文得
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] (7) Chasing and intercepting criminal vehicles;
[0016] The present invention is aimed at the license plate positioning method in the prior art, which has a low license plate positioning accuracy and makes improvements.

Method used

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  • License plate positioning method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example as figure 1 As shown, a method for locating a license plate, the steps of the locating method for a license plate include: S01 the photographing device triggers the photographing of the license plate through a trigger; S02 transmits the image taken by the photographing device to the license plate positioning system through the network, as figure 2 Shown; The license plate positioning system described in S03 preprocesses the image after the previous step of processing to obtain the license plate area image; the license plate positioning system described in S04 performs license plate positioning processing on the license plate area image of the previous step; S05 processes the license plate area after the previous step Perform tilt correction processing, characterized in that:

[0044] The image preprocessing step includes: S031 grayscale processing the image processed in step S02, such as image 3 shown; S032 performs median filtering on the image after the pre...

Embodiment 2

[0048] Embodiment 2, a method for locating a license plate, the steps of the locating method for a license plate include: S01 the photographing device triggers the photographing of the license plate through a trigger; S02 transmits the image photographed by the photographing device to the license plate positioning system through the network; S03 The license plate positioning system preprocesses the image after the previous step of processing to obtain the license plate area image; S04 the license plate positioning system performs license plate positioning processing on the previous step of the license plate area image; S05 performs tilt correction processing on the license plate area after the previous step of processing , characterized by:

[0049] The image preprocessing step includes: S031 grayscale processing the image processed in step S02, such as image 3 shown; S032 performs median filtering on the image after the previous step processing, such as Figure 4 As shown; ...

Embodiment 3

[0054] Embodiment 3, a license plate positioning method, the steps of the license plate positioning method include: S01 the photographing device triggers the license plate to take pictures through a trigger; S02 transmits the image photographed by the photographing device to the license plate positioning system through the network; S03 The license plate positioning system preprocesses the image after the previous step of processing to obtain the license plate area image; S04 the license plate positioning system performs license plate positioning processing on the previous step of the license plate area image; S05 performs tilt correction processing on the license plate area after the previous step of processing , characterized by:

[0055] The image preprocessing step includes: S031 grayscale processing the image processed in step S02, such as image 3 shown; S032 performs median filtering on the image after the previous step processing, such as Figure 4 As shown; S033 perfo...

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Abstract

Provided in the invention is a license plate positioning method. The method comprises: a shooting device carries out triggered shooting on a license plate by a trigger; an image shot by the shooting device is transmitted to a license plate positioning system by a network, and the license plate positioning system carries out pretreatment on the image processed by the last step to obtain a license plate area image; the license plate positioning system carries out license plate positioning processing on the license plate area image; and inclination correction processing is carried out on the processed license plate area. According to the invention, the accuracy of license plate positioning and the operation speed of the license plate positioning system are improved.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a license plate positioning method. Background technique [0002] In today's society, people's pace of life is getting faster and faster, and economic globalization has become an inevitable trend. Especially in big cities, the complexity of traffic conditions also reflects the popularity of vehicles, which also promotes the development of traffic management. This requires an accurate license plate positioning method to manage traffic, so that traffic management is gradually moving towards an automated and intelligent road. The intelligentization of traffic can not only alleviate traffic pressure, but also improve the huge economic and social benefits brought by traffic. Domestic and foreign scientific and technical personnel have also done a lot of research on the license plate positioning method, but because the license plate is not placed correctly, worn, unclean, the ...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06K9/60G06K9/46G06K9/40
CPCG06V10/245G06V10/457G06V10/30G06V10/20
Inventor 江文得
Owner 江文得
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