CN101552912A - Self-adaptive digital watermark copyright protecting device - Google Patents
Self-adaptive digital watermark copyright protecting device Download PDFInfo
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- CN101552912A CN101552912A CNA2008100642296A CN200810064229A CN101552912A CN 101552912 A CN101552912 A CN 101552912A CN A2008100642296 A CNA2008100642296 A CN A2008100642296A CN 200810064229 A CN200810064229 A CN 200810064229A CN 101552912 A CN101552912 A CN 101552912A
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Abstract
The invention relates to a copyright protecting device on the basis of a self-adaptive digital watermark technology. The copyright protecting device comprises a digital watermark embedding module and a digital watermark extracting module. The copyright protecting device can be embedded in products such as a digital camera, a digital video camera, a digital recorder, and the like and can also be connected with products such as the digital camera, and the like in the form of an externally-connected independent device and connected with a computer. The digital watermark embedding module is used for embedding digital watermark information into a digital picture and video and audio products. In the process of copyright certification, the digital watermark extracting module is used for extracting watermarks from a digital product so as to identify the copyright of the digital product. The watermark information in the digital product which is embedded by the watermarks by using the copyright protecting device can still be accurately under the conditions of cutting, compressing, noise adding, and the like, and copyright certification results have good stability.
Description
(1) technical field
The present invention a kind ofly carries out the device of copyright protection, specifically a kind of device that utilizes digital watermark technology that digital multimedia works such as image, video, audio frequency are carried out copyright authentication and protection to digital media work.
(2) background technology
Along with computer networking technology and development of multimedia technology, digital medium information, computer network, personal mobile communication technology or the like enter the every aspect of the modern life, and the use of digital product becomes necessary part in people's life day by day.And Internet technology makes the duplicating of digital multimedia product, propagates and become more and more convenient, digital product infringement, piracy and arbitrarily distort problem, become the subject matter of the digital production development of restriction.In order to address this problem, digital watermark technology arises at the historic moment.
Since digital watermark technology is born, it has become a forward position research field of international academic community rise in recent years, government departments such as the Treasury Department of USA, U.S. copyright working group, German information technology research center, IBM Corporation Watson research center, Cambridge research institute of Microsoft, Alcatel-Lucent's Bell Laboratory, Sony company, NEC research institute and Dutch PHILIPS Co. and esbablished corporation and research institution have all carried out extensive studies aspect digital watermarking, China academia also has a batch of scientific research institutions to put into the research in this field.Digital watermarking has at present entered the preliminary practicability stage, there is part enterprise to develop digital watermarking software separately at home, but because the digital watermarking embedding that these softwares adopt and the imperfection of extractive technique, watermark is destroyed the back at copyright and is difficult to extract.Therefore, the digital watermarking product of researching and developing a kind of anti-attack is imperative, and the research of this device puts forward in order to solve the anti-performance of attacking of digital watermarking just.
(3) summary of the invention
The objective of the invention is to be sheared, compress at copyright and add the problem that correctly to extract after the attack such as make an uproar and a kind of new digital watermarking embedding and the extraction scheme that proposes has good anti-attack performance at digital watermarking.Simultaneously in order to solve the defective that digital watermarking software can not use in digital camera, Digital Video, digital recorder, and proposed watermark embedding and extraction algorithm are write digit chip, be connected with digital product with embedded or external form.
The object of the present invention is achieved like this: in the process watermarked to digital media work, earlier digital multimedia document is carried out wavelet transformation, in transform domain, data are carried out cluster analysis, according to the adaptive selection suitable data of classification results embed watermark information, at last these data are carried out inverse wavelet transform, obtain the media work of embed digital watermark.Digital media work is being carried out in the process of watermark extracting these works are carried out wavelet transformation, the flow process of contrary is carried out watermark detection and extraction in employing and the watermark embed process.
Self-adaptive digital watermark copyright protecting device (MK1) comprises that self-adaptive digital watermark embeds device and self-adaptive digital watermark detector.The core that self-adaptive digital watermark embeds device is to have the chip that digital watermarking embeds function, and according to user's setting, water mark embedding device generates watermark information automatically.Water mark embedding device is designed to the USB interface form, can be connected with digital products such as digital camera, Digital Video, digital recorders, every generation one piece of digital works, can be watermarked to this copyright in digital camera, Digital Video, digital recorder, and do not need to utilize digital watermarking software to embed then in these copyright input computers.The self-adaptive digital watermark detector is and the corresponding Embedded product of water mark embedding device, attach it on all recording arrangements, equipment is when copying a certain copyright, watermark detector carries out watermark detection to these works automatically, if detect " forbid copy " watermark then forbid copy function, thereby reach the effect of copy control.
Innovative point of the present invention:
1, realizes the embedding and the extraction of digital watermarking with the form of embedded and extraneous self-contained unit;
2, the watermark of using this device to embed has good anti-shearing, incompressible and noise robustness
(4) description of drawings
Fig. 1 is a digital watermarking flush mounting block diagram
Fig. 2 is a digital watermarking extraction element block diagram.
Claims (2)
1; a kind of self-adaptive digital watermark copyright protecting device; be a kind of digital watermarking to be embedded digital multimedia; and when copyright authentication, pass through from digital multimedia, to extract corresponding watermark information to realize a kind of device to digital media product copyright protection; it comprises digital watermarking merge module and its delivery piece of digital watermarking; it is characterized in that: digital watermarking embedding and extraction algorithm are realized with digit chip; directly embed or by USB interface and digital camera; digital product such as Digital Video or digital recorder connects, and directly realizes in digital product image; video; the watermark of digital multimedia works such as audio frequency embeds.
2, adaptive digital apparatus for protecting copyright according to claim 1, it is characterized in that: digital multimedia products such as the image of importing this device, video, audio frequency are carried out mathematic(al) manipulation, in transform domain, carry out fuzzy cluster analysis, watermarked according to the adaptively selected suitable position of analysis result; The watermark of using this device to embed can be resisted shearing, compresses and add attack such as make an uproar, and has stable watermark extracting result in the copyright authentication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100642296A CN101552912A (en) | 2008-04-03 | 2008-04-03 | Self-adaptive digital watermark copyright protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100642296A CN101552912A (en) | 2008-04-03 | 2008-04-03 | Self-adaptive digital watermark copyright protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101552912A true CN101552912A (en) | 2009-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100642296A Pending CN101552912A (en) | 2008-04-03 | 2008-04-03 | Self-adaptive digital watermark copyright protecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101552912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243411A (en) * | 2013-06-14 | 2014-12-24 | 腾讯科技（深圳）有限公司 | Multimedia processing method, client side and terminal equipment |
| CN106228502A (en) * | 2016-07-15 | 2016-12-14 | 北华航天工业学院 | The digital watermark embedding of satellite remote-sensing image tiff file and extracting method |
-
2008
- 2008-04-03 CN CNA2008100642296A patent/CN101552912A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243411A (en) * | 2013-06-14 | 2014-12-24 | 腾讯科技（深圳）有限公司 | Multimedia processing method, client side and terminal equipment |
| CN106228502A (en) * | 2016-07-15 | 2016-12-14 | 北华航天工业学院 | The digital watermark embedding of satellite remote-sensing image tiff file and extracting method |
| CN106228502B (en) * | 2016-07-15 | 2018-01-23 | 北华航天工业学院 | The digital watermark embedding and extracting method of satellite remote-sensing image tiff file |
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Open date: 20091007 |