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Method for quickly positioning damaged QR code according to image redundancy information

A redundant information, QR code technology, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as inability to transplant algorithms and slow down the speed of positioning.

Active Publication Date: 2021-03-26
JIANGSU SEUIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deep learning relies on GPU and other hardware devices with parallel computing, which further slows down the positioning speed for barcode scanning devices with backward hardware, and even cannot effectively transplant the algorithm

Method used

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  • Method for quickly positioning damaged QR code according to image redundancy information
  • Method for quickly positioning damaged QR code according to image redundancy information
  • Method for quickly positioning damaged QR code according to image redundancy information

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Experimental program
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Embodiment Construction

[0087] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0088] like figure 1 As shown, the method for quickly locating damaged QR codes according to image redundancy information disclosed by the present invention includes the following steps:

[0089] The method for quickly locating the damaged QR code according to image redundancy information comprises the following steps:

[0090] Step 1, grayscale processing is performed on the picture containing the QR code to obtain the grayscale picture;

[0091] Step 2, evaluate the sharpness of the grayscale image by random sampling;

[0092] Step 3, filter and edge detect the grayscale image through an adaptive threshold;

[0093] Step 4, determine the width of the stripe by the detected edge, and determine the three positioning patterns of the QR code according to ...

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PUM

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Abstract

The invention discloses a method for quickly positioning a damaged QR code according to image redundancy information. The method comprises the following steps: performing gray processing on a picturecontaining the QR code; carrying out definition evaluation on the grayscale picture; performing filtering and edge detection on the grayscale picture; determining three positioning patterns of the QRcode according to the width ratio of the stripes; performing adaptive binarization on the QR code region in combination with the size of the positioning pattern; and searching four edges of the QR code through affine transformation, and finally performing positioning correction by using homography transformation. According to the method for quickly positioning the damaged QR code, redundant information in the image is fully utilized, the image traversal frequency is reduced as much as possible, and the algorithm speed is increased; self-adaptive threshold edge detection and self-adaptive threshold binaryzation are adopted, so that the edge detection and binaryzation effects are improved; unclear images are filtered, and excessive waste of computing resources can be avoided.

Description

technical field [0001] The invention relates to a method for rapidly locating a damaged QR code, in particular to a method for rapidly locating a damaged QR code according to image redundancy information. Background technique [0002] QR code (Quick Response Code, quick response matrix code) is a two-dimensional code, which has the advantages of high information storage density, strong fault tolerance, etc., and can realize fast positioning through its obvious positioning pattern, so it has been widely used. [0003] With the development of informatization, all walks of life are aiming at reducing labor costs and improving the level of informatization, and the simple, low-cost, and fast-reading QR code labels have become the first choice of major industries. By pasting the QR code label and identifying it on the factory assembly line, the whole process of production and assembly of each part can be automatically recorded, so as to realize rapid product traceability and good ...

Claims

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Application Information

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IPC IPC(8): G06K7/14G06T3/00G06T5/20G06T7/13G06T7/136
CPCG06K7/1417G06K7/1443G06K7/1452G06K7/146G06T7/13G06T7/136G06T5/20G06T2207/10008G06T2207/20024G06T3/02
Inventor 吴俊斌顾善中田晓明
Owner JIANGSU SEUIC TECH CO LTD
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