License plate positioning method and related device thereof

A license plate location and license plate technology, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of increasing the cost of license plate positioning, the loss of license plate positioning accuracy caused by the uncertainty of vehicle position, etc.

Pending Publication Date: 2020-10-23
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the input size, this kind of method needs to obtain the position of the vehicle in the image first, and then locate the license plate on the basis of obtaining the position of the vehicle, which undoubtedly increases the cost of license plate positioning.
In some special scenarios, the uncertainty of vehicle position acquisition has caused a great loss to the accuracy of license plate positioning

Method used

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  • License plate positioning method and related device thereof
  • License plate positioning method and related device thereof
  • License plate positioning method and related device thereof

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Embodiment Construction

[0033] In order to enable those skilled in the art to better understand the technical solution of the present application, the face detection method, model training method and related devices provided by the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0034] For details, please refer to figure 1 , figure 1 It is a schematic flow chart of the first embodiment of the license plate location method of the present application. The method for locating a license plate in this embodiment includes the following steps.

[0035] S101: Perform preprocessing on the image to be positioned to confirm boundary pixels in the image to be positioned.

[0036] Because the edge information of the license plate area is relatively rich and obvious, the license plate to be detected area in the image to be located can be confirmed based on the obvious edge information of the license plate area, so the image to be located ca...

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Abstract

The invention provides a license plate positioning method and a related device thereof. The license plate positioning method comprises the steps of preprocessing a to-be-positioned image to determineboundary pixel points in the to-be-positioned image; dividing the to-be-positioned image into a plurality of subareas, and dividing each subarea into a plurality of subareas; determining whether eachsubarea is a foreground subarea based on the proportion of the boundary pixel points in each subarea; determining whether each subarea is a foreground subarea based on the proportion of the foregroundsubarea in each subarea; and determining a license plate to-be-detected area of the to-be-positioned image based on the information of the foreground subarea, and performing license plate positioningon the license plate to-be-detected area. According to the license plate positioning method, vehicle detection does not need to be performed on the to-be-positioned image so that the complexity of the method can be reduced.

Description

technical field [0001] The present application relates to the technical field of image detection, in particular to a license plate location method and related devices. Background technique [0002] The current mainstream license plate location technology mainly uses the license plate location network to predict the position of the license plate. However, due to the limitation of the input size, this kind of method needs to obtain the position of the vehicle in the image first, and locate the license plate on the basis of the obtained vehicle position, which undoubtedly increases the cost of license plate positioning. In some special scenarios, the uncertainty of vehicle location acquisition has caused a great loss to the accuracy of license plate location. Contents of the invention [0003] The present application provides a license plate location method and related devices, which do not need to perform vehicle detection on the image to be positioned, thereby reducing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32
CPCG06V10/245G06V20/625
Inventor 薛佳乐王耀农敦婧瑜张湾湾李轶锟江歆霆
Owner ZHEJIANG DAHUA TECH CO LTD
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