Method and system for repairing defaced two-dimensional code based on machine learning

Abstract

The invention discloses a method and system for repairing a defaced two-dimensional code based on machine learning, wherein the method for repairing a defaced two-dimensional code includes: performing grayscale processing on the acquired color two-dimensional code image and converting it into gray two-dimensional code image; gray-scale enhancement processing is carried out to the gray-scale two-dimensional code image, and the gray-scale two-dimensional code image after the enhancement process is obtained; the gray-scale two-dimensional code image after the enhanced processing is obtained by using the trained SVM model Carry out two-dimensional code area positioning processing to obtain an image of the two-dimensional code area; use a trained image restoration model to perform repair processing on the defaced two-dimensional code in the two-dimensional code area, and obtain the repaired two-dimensional code image. During the implementation of the present invention, the defaced two-dimensional code can be quickly repaired, and the speed and ability of the scanning gun to recognize the defaced two-dimensional code can be improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and system for repairing a damaged two-dimensional code based on machine learning. Background technique [0002] A two-dimensional code is a kind of conformity that realizes information storage by arranging a specific geometric model in a specified code on a two-dimensional plane; the two-dimensional code has the functions of error correction and positioning, and the scanning instrument can scan the two-dimensional code under different angles of light. The common two-dimensional codes include QR code, PDF417 code, Data matrix, etc. Among them, the QR code is the most popular. [0003] In recent years, with the development of the Internet era, the sharing economy has entered people's lives, and various shared products can be seen everywhere in life, such as shared bicycles, shared charging treasures, shared umbrellas, etc. Due to the low cost, shared products of...

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Problems solved by technology

[0003] In recent years, with the development of the Internet era, the sharing economy has entered people's lives, and various shared products can be seen everywhere in life, such as shared bicycles, shared charging treasures, shared umbrellas, etc. Due to the low cost, shared products often choose QR code as the unique identification of the product; however, in the process of product circulation, due to various environmental and human factors, the two-dimensional code is worn out, and in severe cases, the reading of the two-dimensional code will fail. ultimately affect the quality of service

[0004] At present, the scanning equipment and software on the market do not have the function of repairing defaced QR codes; for defaced QR codes, it is generally corrected with redundant information during the reading process by using the error correctability of the QR code Error information caused by defacement; the effect of this error correction method is determined by the error correction level of the two-dimensional code; generally speaking, when the amount of information to be encoded is constant, the higher the error correction level, the more redundant information after encoding. The more, the larger the area of ​​the coded QR code, and the stronger the anti-fouling effect; the premise of the correct reading of the QR code is that the positioning pattern is intact. Once the positioning pattern is worn, no matter how high the error correction level is, the scanning device still cannot correct it. read QR code

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