Anti-counterfeiting method based on sparse lattice code

Abstract

The invention discloses an anti-counterfeiting method based on sparse lattice codes. The steps include: selecting a sparse lattice two-dimensional code system to be processed for anti-counterfeiting; and an encoding and decoding algorithm based on the selected code system generates information to be encoded as dots matrix image; calculate the anti-counterfeiting information positioning seed corresponding to the information to be encoded to locate the position of the anti-counterfeiting feature information to be embedded in the bit-matrix image; multiply and expand the bit-matrix image to obtain a lattice checkerboard image; embed the anti-counterfeiting feature information To the position where the anti-counterfeiting information on the dot matrix checkerboard image locates the seed, the final anti-counterfeiting code image is obtained; the anti-counterfeiting code image is assigned to the printed matter; the anti-counterfeiting code printed on the printed matter is subjected to anti-counterfeiting detection. The anti-counterfeiting code image generated based on the anti-counterfeiting method provided by the present invention has the advantages of high concealment, strong anti-duplication capability, low cost of coding consumables, and suitable for surface printing on various materials such as software packages, hard packaging, plastics, ceramic tiles, metals, etc. .

Description

technical field [0001] The invention relates to the technical field of anti-counterfeiting, in particular to an anti-counterfeiting method based on a sparse lattice code. Background technique [0002] In the early years, the anti-counterfeiting of products mainly relied on checking the anti-counterfeiting number after purchase, such as dialing 400 numbers or entering the anti-counterfeiting code through smart terminals such as mobile phones and computers for anti-counterfeiting inspection, but the inspection is troublesome and the experience is not good. In order to improve the inspection efficiency, the industry has generally begun to provide anti-counterfeiting applications by scanning codes, that is, the anti-counterfeiting codes are generated through the public code system and attached to the packaging surface for query verification. There are mainly two types of query verification methods, one is post-purchase anti-counterfeiting, that is, after purchase, scratch off th...

AI Technical Summary

Problems solved by technology

However, this two-dimensional code anti-counterfeiting method must extract anti-counterfeiting features for each printed two-dimensional code, and does not allow post-correction and modification of the extracted anti-counterfeiting features, so the anti-counterfeiting features must be extracted one by one for batch printed two-dimensional codes , leading to low production efficiency of anti-counterfeiting codes, not suitable for mass production

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