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Method for automatically identifying label content based on character two-dimensional code image

An automatic identification and two-dimensional code technology, applied in the direction of electromagnetic radiation induction, etc., can solve problems such as uneven illumination, barcode stains, complex background patterns, etc., and achieve fast and accurate positioning and improve accuracy

Pending Publication Date: 2022-07-15
SUZHOU QIJI WELDING MATERIALS CO LTD
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Problems solved by technology

[0004] However, in the process of steel storage and transportation, the collected QR codes inevitably encounter problems such as uneven illumination, complex background patterns, and barcode contamination. How to overcome these difficulties and identify QR codes accurately and quickly is a research topic. focus

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  • Method for automatically identifying label content based on character two-dimensional code image

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Embodiment Construction

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0044] like figure 1 As shown in the present invention, a method for automatically identifying label content based on a character two-dimensional code image specifically includes the following steps:

[0045] Step (1), scan to obtain the character two-dimensional code image on the steel label;

[0046] Step (2), preprocessing the acquired character two-dimensional code image, and the preprocessing includes denoising and binarization;

[0047] In the process of using recognition equipment to obtain image information, noise is inevitably introduced. In order to improve the accuracy of identifying QR code images and obtaining label content, it is necessary to denoise the scanned character QR code. Common noise removal methods, The median filter algorithm is adopted. On the w...

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Abstract

The invention provides an automatic label content identification method based on a character two-dimensional code image, and the method comprises the steps: sequentially carrying out the denoising, binarization, positioning, error correction and decoding of the character two-dimensional code image on a steel label, and carrying out the denoising of the character two-dimensional code image through adaptive weighted median filtering, binarization is carried out on the character two-dimensional code image by adopting a binarization algorithm based on background gray level, and positioning is carried out on the character two-dimensional code image by utilizing a positioning algorithm based on a convolutional neural network; and when the character two-dimensional code image is distorted, correcting the character two-dimensional code image by adopting a neighbor method. By using the method of the invention, the influence of the storage and transportation process on the character two-dimensional code image on the steel label can be solved, and the related information of the steel can be accurately obtained.

Description

technical field [0001] The invention relates to a method for automatically identifying label content based on a character two-dimensional code image. Background technique [0002] A two-dimensional code is a graphic that uses a specific geometric figure to be distributed on a plane (two-dimensional direction) according to a certain rule, black and white, and records data symbol information. The concept of 0" and "1" bit stream uses several geometric shapes corresponding to binary to represent text and numerical information, which is automatically read by image input equipment or photoelectric scanning equipment to realize automatic information processing. [0003] With the development of mobile Internet, QR codes are used more and more widely, and QR code labels have the advantages of convenient scanning, complete information and good anti-counterfeiting effect. At present, QR codes are also applied to the field of steel. By scanning the QR codes, you can know product infor...

Claims

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Application Information

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IPC IPC(8): G06K7/14G06K7/10
CPCG06K7/1417G06K7/1443G06K7/1456G06K7/146G06K7/1473G06K7/10861
Inventor 陈亮陆云涛刘宇恒
Owner SUZHOU QIJI WELDING MATERIALS CO LTD
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