Anti-counterfeiting authentication method of anti-counterfeiting image of printed matter based on digital watermarking technology

Abstract

The invention relates to an anti-counterfeiting authentication method of an anti-counterfeiting image of printed matter based on a digital watermarking technology. Most of encryption technologies and digital watermarking technologies only provide an anti-counterfeiting function for the digital field of an image and can not resist geometric attacks and attacks similar to printing, scanning, and the like. The method comprises the following steps of: firstly, processing a two-value bar code, and embedding the two-value bar code into a carrier image; then, printing once to form authorized printed matter; taking a picture of the printed matter by using a mobile phone, uploading the picture to an authentication center, and reading the watermark by using a detection algorithm to identify the authenticity of the printed matter so as to achieve the anti-counterfeiting purpose. Because the watermark embedded in the printed matter is invisible, the watermark has good invisibility and safety. The invention realizes the detection by using the mobile phone and has the advantages of equipment convenience, mobility, broad application prospect, and the like.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting and information security, and particularly relates to the anti-counterfeiting of printed matter. A part of the binary barcode is selected as a watermark and embedded into the protected printed matter, and then the printed matter containing the watermark is photographed by a mobile phone and transmitted to the authentication center through a wireless network. The anti-counterfeit authentication method of the printed matter anti-counterfeit image that realizes the identification of genuine products and imitation products after the system. Background technique [0002] The digital information revolution has brought profound changes to human society and life, as well as new challenges and opportunities for innovation. With the development of multimedia technology and network technology, electronic publications such as digital sound, text, image, music and video can be quickly and accuratel...

AI Technical Summary

Problems solved by technology

[0005] Most encryption techniques and digital watermarking methods only provide anti-counterfeiting functions in the digital domain for images, and cannot resist geometric attacks and attacks similar to printing and scanning.

If the image embedded with the watermark is transmitted in the form of printed paper, when the watermark information is detected by the detection system, the watermark has gone through digital-to-analog conversion processes such as printing / printing, scanning / photographing, etc. along with the image. At the same time, This process introduces a lot of noise (such as scanning jitter noise, thermal noise, random noise, etc.), so that the watermark is largely destroyed before extraction.

Applying digital watermarking technology to printed matter anti-counterfeiting not only requires the algorithm to be invisible, but also requires the algorithm to be able to resist the information loss caused by one printing / printing, scanning / photographing process, and requires the second printing / printing, scanning / photographing Finally, the product no longer contains an effective watermark, which makes the application of digital watermarking technology in the field of printing anti-counterfeiting more challenging

Images