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3D digital watermark embedding and detecting method and device based on virtual optics

A three-dimensional digital and digital watermarking technology, applied in the field of pattern recognition, can solve the problem of lack of robustness in image processing, and achieve the effects of strong anti-interference performance, improved robustness and confidentiality, and low complexity

Inactive Publication Date: 2004-04-07
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most spatial domain watermarking algorithms can provide simple and effective watermark embedding schemes, but they lack robustness to image processing

Method used

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  • 3D digital watermark embedding and detecting method and device based on virtual optics
  • 3D digital watermark embedding and detecting method and device based on virtual optics
  • 3D digital watermark embedding and detecting method and device based on virtual optics

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] figure 1 It is a schematic diagram of the principle of the embedding / detection method of 3D digital watermark based on virtual optics. In the figure, W is the watermark image, W'is the reconstructed watermark image; I is the information plane (original image), and I'is the reconstructed information plane. Z 1 Represents the distance from the watermark image to the front surface of the virtual imaging lens, Z 1 ’Represents the distance from the rear surface of the lens to the reconstructed watermark image plane; Z 2 Indicates the distance from the information plane to the front surface of the lens, Z 2 'Represents the distance from the rear surface of the lens to the reconstructed information plane. It is assumed that the information plane and the watermark image are illuminated by coherent light of the same selected wavelength. The propagation of light waves from ...

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PUM

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Abstract

The present invention discloses 3D digital watermark embedding and detecting method and device based no virtual optics, and belongs to the field of mode distinction. Parallel hardware and algorithm or parallel electronic device and software are adopted, and the emulational virtual optical imaging process is utilized to add digital watermark information to static image, audio or video data. During embedding watermark, geometrical structural parameters of the virtual optical path are used as cipher key, and multiple cipher keys are designed. During detecting watermark, the digital watermark is extracted from watermark containing information by means of deciphering the multiple cipher keys. The watermark may be text, digital, signature, mark, etc. The adopted device is one master-slave system comprising PC, DSP, programmable special IC, or one PC-off embedded system. The present invention has the advantages of high robustness, high safety, high flexibility, etc.

Description

Technical field [0001] The invention relates to a method and device for embedding / detecting a three-dimensional digital watermark based on virtual optics, and belongs to the technical field of pattern recognition. Background technique [0002] With the increasing popularity of computers and digital communication networks, multimedia information exchanges have reached unprecedented depth and breadth. On the other hand, the infringement of works has become easier and tampering has become more convenient. How to protect the copyright of works has been highly valued by people. As an important means of copyright protection, digital watermarking technology has been widely studied and applied. [0003] The embedded watermark can be a paragraph of text, logo, serial number, etc. Watermark is usually invisible or imperceptible. It is closely integrated with the original data (such as image, audio, video data, etc.) and hidden in it. It becomes an inseparable p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22G06F12/14G06F17/10G06F17/21H04N5/913
Inventor 彭翔张鹏牛憨笨
Owner SHENZHEN UNIV
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