Method and device for locating fast-response QR code area

A technology of rapid response and positioning method, applied in the field of image processing, can solve the problem of inability to locate the QR code position, and achieve the effect of accurate positioning and accurate QR code area

Active Publication Date: 2017-08-08
ゼジャンハーレイテクノロジーカンパニーリミテッド
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a positioning method and device for a QR code area, which is used to solve the problem that the morphological method in the prior art cannot accurately locate the position of the QR code from the image

Method used

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  • Method and device for locating fast-response QR code area
  • Method and device for locating fast-response QR code area
  • Method and device for locating fast-response QR code area

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Embodiment Construction

[0077] According to the pixel value of each pixel in the target image including the QR code area, the embodiment of the present invention performs filtering processing on the pixel points in the target image; performs a clustering operation on the pixel points satisfying the filtering processing conditions, and determines multiple Clustering area; wherein, the distance between every two pixel points in the clustering area is not greater than the first threshold; according to the rectangularity and rotation angle of each clustering area, determine from the multiple clustering areas Get the clustering area corresponding to the QR code locator of the alternative; According to the relative position information between each QR code locator in the QR code area, from the clustering area corresponding to the QR code locator of the alternative Selecting the clustering area corresponding to the QR code locator; locating the QR code area in the target image according to the clustering are...

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Abstract

The invention relates to the field of image processing and particularly relates to a method and a device for locating QR codes. The method and the device solve the problem in the prior art that the conventional morphological method can not accurately locate the positions of QR codes in an image. According to the embodiment of the invention, according to the pixel value of each pixel point in a target image, filtering the pixel points of the target image. For pixel points which meet the filtering operation condition, the pixel points are clustered and a plurality of clustering areas are determined. According to the rectangular degree and the rotation angle of each clustering area, a clustering area corresponding to each QR code locator is selected based on the relative position information of the locator in a QR code. According to the selected clustering area corresponding to the QR code locator, the QR code area in the target image is located. According to shape features of the locator, the area corresponding to the QR code locator is selected according to the relative position information of the locator in the QR code. After that, the area of the QR code locator is selected. Therefore, in an environment of low contrast and high noise, the QR code can be located more accurately.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for positioning a QR code area. Background technique [0002] With the rapid development of science and technology, the appearance of QR (Quick Response, quick response) codes facilitates the life of users. Users can scan the codes through electronic devices to obtain images including the QR codes, and electronic devices locate the QR codes in the images. The location of the QR code, and decode the QR code to obtain related information. With the popularization of the use of QR codes, QR codes are also added to the license plate. The industrial camera collects one or more frames of images, and the electronic device locates the position of the QR code in the collected images. [0003] When locating a QR code in an image in the prior art, based on the high contrast between the code area and the surrounding background, a morphological method is used to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/62
CPCG06V10/245G06F18/23
Inventor 定志锋周璐张兴明李铭
Owner ゼジャンハーレイテクノロジーカンパニーリミテッド
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