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Printed matter anti-counterfeit digital water print embedding method and its detecting method

A technology of digital watermarking and detection method, which is applied in the detection of authenticity of printed matter and the embedding of anti-counterfeiting digital watermark of printed matter, which can solve the problems of detection and so on.

Inactive Publication Date: 2007-11-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

As an effective copyright protection and information security technology, digital watermarking has become a research hotspot. It uses the redundancy of the Human Vision System (HVS, Human Vision System) to directly embed some iconic information into the carrier media information through a certain algorithm. Among them, but does not affect the value and use of the original content, and cannot be perceived by the human visual system

Method used

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  • Printed matter anti-counterfeit digital water print embedding method and its detecting method
  • Printed matter anti-counterfeit digital water print embedding method and its detecting method
  • Printed matter anti-counterfeit digital water print embedding method and its detecting method

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Embodiment Construction

[0034] Embodiments of the present invention: Referring to Fig. 1, the embedding of digital watermark refers to adding a meaningful graphic to the digital image to be printed. This graphic has a clear indication meaning and can provide a basis for distinguishing the authenticity. The entire embedding process is: 1. Processing the original image and watermark image; 2. Embedding the watermark image in the original image; 3. Reverting to a printable image; 4. Delivery for printing or printing.

[0035] In these four steps, processing the watermark and the original image refers to converting the watermark image and the original image into a format suitable for embedding the watermark and realizing the transformation in the digital space, so as to realize the embedding of the watermark. The second step is to embed the watermark into the original image according to the established method in the digital system, the third step is to restore the original image that has embedded the wate...

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Abstract

The invention discloses a printed product anti-counterfeiting digital watermark inserting method and the detecting method thereof. And the inserting method uses a method that calculates singular value of image subchannel matrix and then superposes watermark image on the corresponding subchannel and adds influence factor to make the printed product itself have anti-counterfeiting property; and the invention provides a detecting method which is inverse to the digital watermark insertion and detects whether the printed product is true or false. And the invention can be widely applied to the printed product anti-counterfeiting field.

Description

technical field [0001] The invention relates to the field of anti-counterfeit printed matter, in particular to a method for embedding an anti-counterfeit digital watermark of printed matter and a corresponding method for detecting the authenticity of printed matter. Background technique [0002] Digital watermarking technology is a technology born with the digitization of information media, because media digitization not only provides great convenience for information access, but also significantly improves the efficiency and accuracy of information expression. As an effective copyright protection and information security technology, digital watermarking has become a research hotspot. It uses the redundancy of the Human Vision System (HVS, Human Vision System) to directly embed some iconic information into the carrier media information through a certain algorithm. Among them, but does not affect the value and use of the original content, and cannot be perceived by the human ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00B41M3/10
Inventor 武畅彭启琮李玉柏王坚
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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