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Watermark embedding device, verification device and digital watermark verification system

A watermark embedding and watermarking technology, applied in image data processing, image data processing, instruments, etc., can solve the problem of difficulty in judging the authenticity of certificates, and achieve the effect of rapid verification and time saving

Inactive Publication Date: 2011-09-28
邱森辉
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  • Abstract
  • Description
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Problems solved by technology

[0002] Today's society is full of all kinds of counterfeit certificates, especially the counterfeiting technology is advancing day by day, so when receiving a paper certificate, it is difficult to judge the authenticity of the certificate

Method used

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  • Watermark embedding device, verification device and digital watermark verification system
  • Watermark embedding device, verification device and digital watermark verification system
  • Watermark embedding device, verification device and digital watermark verification system

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0015] like figure 1 As shown, the preferred embodiment of the digital watermark verification system of the present invention includes: a pattern designer

[0016] 1. A watermark embedding device 2 , a digital printing machine 3 , a scanner 4 and a watermark verification device 5 .

[0017] A management center can use the digital watermark verification system of the present invention to accept commissions from all walks of life to print paper certificates with anti-counterfeiting functions. And in the future, it can assist in the verification of the authenticity of these certificates. For example, it can be entrusted by the school to print the diploma, and when the graduate takes the diploma to apply for a job in a company, the company can help verify the authenticity of the diploma through the management center to prevent forgery. In addition, in addition to...

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Abstract

The invention provides a watermark embedding device. The device comprises an image conversion module, a random number seed generator, a core module and an image reply module, wherein the image conversion module carries out color separation on an original certificate image to obtain a pixel retrieving component and a residual pixel component, and converts the pixel retrieving component into frequency domain data comprising a plurality of Fourier coefficients; the random number seed generator performs logical operation according to the certificate number and a cryptographic key to obtain a random number seed; the core module selects a part of Fourier coefficients as a plurality of embedding points according to the random number seed, and increases values of the Fourier coefficients of the embedding points to obtain watermark embedded frequency domain data; and the image reply module processes images to obtain a watermark embedded certificate image. Therefore, the watermark embedding device is a unique effective technology capable of stopping certificate counterfeiting at present.

Description

technical field [0001] The invention relates to an embedding device, a verification device and a verification system, in particular to a watermark embedding device, a verification device and a digital watermark verification system applied to anti-counterfeit certificates. Background technique [0002] Today's society is full of all kinds of counterfeit certificates, especially the forgery technology is advancing day by day, so when receiving a paper certificate, it is difficult to judge the authenticity of the certificate. Therefore, a technology that can verify the authenticity of paper certificates in real time is needed. Contents of the invention [0003] The object of the present invention is to provide a watermark embedding device which avoids the above-mentioned defects. [0004] The watermark embedding device of the present invention includes: an image conversion module, which receives an original certificate image generated according to a certificate number, and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
Inventor 唐元亮陈柏秀邹梦婷郑宇祥张鼎伟陈敬尧王俐婷邱森辉
Owner 邱森辉
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