Color QR code generation and identification method

Abstract

The invention discloses a color QR code generation and identification method. The method comprises the following steps: S1, analyzing input data; s2, converting input data characters into a data bit stream; s3, partitioning the data code word sequence to generate error correction code words, and adding all the error correction code words into the data code word sequence to form a final bit streamsequence; s4, processing the final bit stream sequence to obtain a color QR code; s5, performing recognition and preprocessing, color correction and positioning correction on the color QR code image;s6, recognizing the QR code image, removing the mask, then reading the symbol characters, recovering the data and the error correction code words, and meanwhile, detecting and correcting errors by utilizing the error correction code words; and S7, performing segmentation decoding on the data codeword module to obtain a data character result of the color QR code. According to the method, the data and error correction code word area is improved by reserving the functional graph, the format information and the version information area, so that the data capacity is expanded, and the reliability and the robustness are relatively good.

Description

technical field [0001] The invention relates to the technical field of QR codes, in particular to a method for generating and identifying color QR codes. Background technique [0002] The QR code was originally a matrix two-dimensional code symbol developed by Denso Corporation of Japan in September 1994. It has the recognition function of a one-dimensional barcode and the large information capacity, high reliability, and It has the advantages of representing various text information such as Chinese characters and images, and has strong confidentiality and anti-counterfeiting. [0003] The QR code has a square shape and only black and white modules exist. There are 3 of the 4 corners of the square, printed with smaller patterns similar to the word "Hui", located in the upper left, upper right, and lower left corners respectively. The main function of these 3 patterns is to help the decoding software quickly locate the QR The image area of ​​the code, so that the image coll...

AI Technical Summary

Problems solved by technology

For example, the binary data is 110011001. If black and white QR codes are used, 9 modules need to be stored. Moreover, in many cases, more binary data needs to be stored. At this time, the data capacity of black and white QR codes often cannot meet the demand. At the same time, the information embedding ability of black and white QR codes is also lacking.

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