Packaging Anti-counterfeiting Technology Based On Anti-photographic Printing Robust Watermark

All commodities,including books and publications,valuable commodities,and daily department stores,have counterfeit and inferior products.In order to seek huge profits,unscrupulous manufacturers have no bottom line to harm the interests of businesses and people,and have a serious impact on my country's economic development.As a method of protecting the property rights and information of digital products,digital watermarking technology has received more and more attention and research.In recent years,as the problems of anti-counterfeiting of commodity packaging have continued to emerge,digital watermarking anti-counterfeiting technology has invisible hidden information.Sexual characteristics can solve the problem of anti-counterfeiting packaging.This article puts forward the research on packaging anti-counterfeiting technology based on anti-photographing and printing robust watermark.Anti-photographic printing packaging anti-counterfeiting technology can identify the authenticity of goods through the identification of labels,effectively curb the circulation of fake goods on the market,and achieve sound economic development;because it does not need to invest too much capital and manpower in the entire process,it can be Maximize benefits.Through the research of packaging anti-counterfeiting technology,protect the interests of legal persons and promote economic development.Aiming at the problems of watermark embedding,packaging anti-counterfeiting label deformation and taking photos to extract watermark information,a packaging anti-counterfeiting technology based on anti-photographic printing robust watermark is proposed.Main functions: geometric correction,watermark embedding and extraction,anti-second scan printing.First,embed the secret information according to the algorithm proposed in the paper to obtain the watermarked carrier label,then geometrically correct the anti-counterfeit label without destroying the watermark information,and then extract the watermark from the anti-counterfeit label embedded with the secret information according to the watermark algorithm model..The core of the watermarking algorithm model of the paper is divided into two steps.The first step is to convert the original carrier image color space and then double-transform it to obtain the low frequency subband amplitude spectrum.In the second step,the secret watermark information is double-random phase encrypted and then weighted and embedded into the singular value of the color carrier image to realize the embedding of the watermark.The experimental results show that the carrier image embedded with the watermark information is no different from the original image,and the watermark information extracted after photographing and printing also has a high degree of recognition.This algorithm highlights the concealment of secret information embedding and has good robustness to photograph printing,and it has good resistance to the secondary attack of reprinting and photographing after compression filtering attack and geometric deformation attack.The effective identification of the extracted watermark can verify the product information,and then realize the function of packaging anti-counterfeiting.