Anti-counterfeiting method based on sparse dot matrix codes

Abstract

The invention discloses an anti-counterfeiting method based on sparse dot matrix codes. The method comprises the following steps: selecting a sparse dot matrix two-dimensional code system to be subjected to anti-counterfeiting processing; generating the information to be coded into a dot matrix image based on a coding and decoding algorithm of a selected code system; calculating an anti-counterfeiting information positioning seed corresponding to the to-be-coded information so as to fix the position where the anti-counterfeiting feature information is to be embedded in the dot matrix image; multiplying and enlarging the dot matrix image to obtain a dot matrix checkerboard image; embedding the anti-counterfeiting feature information into the position positioned by the anti-counterfeiting information positioning seed on the dot matrix checkerboard image to obtain a final anti-counterfeiting code image; tagging the anti-counterfeiting code image to a printed matter; and carrying out anti-counterfeiting detection on the anti-counterfeiting code printed on the printed matter. The anti-counterfeiting code image generated based on the anti-counterfeiting method provided by the invention has the advantages of being high in concealment, strong in anti-copying capability, low in cost of tagging consumables and suitable for surface printing of various materials such as software packages, hard packages, plastics, ceramic tiles and metal.

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 ...

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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