Method and device for optimizing embedding parameters of anti-copy two-dimensional code

Abstract

The present disclosure describes an optimization method for embedding parameters of an anti-copy two-dimensional code, which is characterized in that it includes: obtaining an initial two-dimensional code; printing and scanning the initial two-dimensional code to obtain multiple target two-dimensional codes; A target two-dimensional code, according to the method of smoothing and averaging, synthesize multiple target two-dimensional codes with a preset number of target two-dimensional codes into a corresponding two-dimensional code composite graph; calculate the mean value, variance and shape factor of the two-dimensional code composite graph, and correct them The corrected mean, corrected variance and corrected shape factor are obtained by modifying the mean, variance and shape factor of the function; the theoretical corrected bit error rate is obtained through the generalized Gaussian function based on the corrected mean, corrected variance and corrected shape factor; and the theoretical corrected bit error rate is compared with the two-dimensional The error correction ability of the code, when the theoretical corrected bit error rate is less than or equal to the error correction ability of the two-dimensional code, the error correction ability of the two-dimensional code is reduced to increase the attack cost of the illegal copying party.

Description

technical field

[0001] The present disclosure relates to the field of information technology, in particular to a method and device for optimizing embedding parameters of an anti-copy two-dimensional code. Background technique

[0002] After the traditional two-dimensional code is printed out, it is easy to be copied by illegal users. At present, the anti-copying methods of two-dimensional codes mainly include: (1) using digital watermark technology to prevent copying; (2) using special printing materials or processes to prevent copying; (3) using physical unclonable features to prevent copying; (4) Anti-copy with anti-copy patterns.

[0003] Although the above-mentioned method can play the role of anti-copying to a certain extent, it also has obvious limitations: on the one hand, it reduces the versatility of the two-dimensional code, specifically the above-mentioned method reduces the effect of the two-dimensional code on the output and The universal applicability of the ...

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