A watermarking scheme for natural language documents
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In this paper, a novel scheme of text digital watermarking was presented based on components computing, in order to protect copyright of digital text documents, prevent them from illegal copying and diffusing. In the process of abstracting the text content to vector cluster, and thus the embedding and detecting of text digital watermarking was realized. Results of experiments showed that the watermark is robust against copying, cutting and format adjusting.Keywords:
Copying
Digital Watermarking Alliance
Digital content
The purpose of this paper is to discuss and apply digital watermarking technology to solve the forgery problem in depth synthesis. With the rapid development of deep synthesis technology and its application in various fields, it is particularly important to protect the authenticity and integrity of digital content. Based on the understanding of digital watermarking, this paper explores an experimental design, which uses watermarking embedding and extraction algorithms and forgery detection technology to solve the problem of deep forgery, protect the copyright, integrity and anti-copy of digital products. In order to improve the robustness and reliability of the watermark, a suitable watermark embedding and extraction algorithm is designed by analyzing the characteristics of deep synthesis forged media in the experimental process. Then select the data set containing the original digital media and the deep synthetic forged samples, extract the features of the two, and find out the features that distinguish the differences between the two. Finally, the forgery detection technology is used to evaluate the performance of digital watermarking technology in depth forgery detection. In this paper, digital watermarking technology is used to provide an effective solution to the problem of forgery in depth synthesis, which can be applied to protect intellectual property rights, prevent tampering and forgery, and protect the authenticity and integrity of digital media content.
Robustness
Digital Watermarking Alliance
Digital content
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Whether you need to quickly come up to speed on the state of the art in digital watermarking or want to find out the latest about such research areas as 3-D geometry watermarking, this timely reference gives you the hands-on knowledge you need for your work. This book covers the full range of media - still images, audio data, video, 3-D geometry data, formatted text, music scores, and program code - that you can protect with digital watermarking. Realistic application scenarios and parameters help you to decide which watermarking technology is right for a host of applications. In-depth analysis of threats, risks, and attack mechanisms lets you establish quality and robustness criteria to ensure optimal content protection. Copy and usage schemes, digital rights management, tamper resistance, and encryption are also among the content protection mechanisms and solutions that this book arms you with to prevent illegal pirating of copyrighted digital content.
Digital Watermarking Alliance
Digital rights management
Digital Preservation
Copy protection
Robustness
Digital content
Watermarking attack
Digital data
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Digital watermarking is a well known technique used for copy rights protection of multimedia data. The biggest disadvantage of general watermarking schemes is that they permanently distort original data. Reversible watermarking techniques allow the restoration of original data, after watermark detection. A blind robust and reversible watermarking algorithm based on CDMA is proposed in this paper. Watermark is arithmetically added in the proposed CDMA based watermarking scheme. Therefore, it is not difficult to remove it after detection. In proposed algorithm, spreaded watermark is added to frequency coefficients in Discrete Wavelet domain. Watermark is extracted by using spreading codes only. After extraction, the watermark can be removed from watermarked data only by using same spreading codes. Furthermore, the original watermark is not required during watermark removal process.
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Digital watermarking applications of digital watermarking digital watermarking for still images digital watermarking for audio data digital watermarking for other media attacks, benchmarks and standardization other content protection mechanisms integrated content protection solutions conclusion.
Digital Watermarking Alliance
Digital content
Watermarking attack
Copy protection
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The improvements in internet technologies and growing demands on online multimedia businesses have made digital copyrighting as a major challenge for businesses that are associated with online content distribution via diverse business models including pay–per–view, subscription, trading, etc. Copyright protection and evidence for rightful ownership are the major issues associated with the distribution of any digital images. Digital watermarking is a probable solution for digital content owners that offer security to the digital content. In recent years, digital watermarking plays a vital role in providing the apposite solution and numerous researches have been carried out. In this paper, an extensive review of the prevailing literature related to the image watermarking is presented together with classification by utilising an assortment of techniques. In addition, a terse introduction about the digital watermarking is presented to get acquainted with the vital information on the subject of digital watermarking.
Digital Watermarking Alliance
Digital content
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In a recent paper by Tan and Liu , a watermarking algorithm for digital images based on singular value decomposition (SVD) is proposed. This comment demonstrates that this watermarking algorithm is fundamentally flawed in that the extracted watermark is not the embedded watermark but determined by the reference watermark. The reference watermark generates the pair of SVD matrices employed in the watermark detector. In the watermark detection stage, the fact that the employed SVD matrices depend on the reference watermark biases the false positive detection rate such that it has a probability of one. Hence, any reference watermark that is being searched for in an arbitrary image can be found. Both theoretical analysis and experimental results are given to support our conclusion.
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Value (mathematics)
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This paper describes the significance of digital water marking process. Watermarking is a process of hiding information in multimedia content like images and videos. Now a day it is major research area. Digital watermarking is one of the best solutions to protect content in web, content authentication and managing copyright information. Watermarking has been proposed for a long while to embed the secret information with images to stop reduces unauthorized access of the content. Watermarking and image compression is quiet different area. Rest of this paper we are going to elaborate what are all techniques that are exist so far in watermarking technology and subsequent sections classifies from the different perspectives. Watermarking is not only protecting the content, it increases the value of the content. There are numerous algorithms and procedures available for watermarking of images and videos etc., although this paper limits watermarking with images only.
Digital Watermarking Alliance
Digital content
Watermarking attack
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An improved watermarking algorithm is proposed to deal with public watermarking verification and large information reserves.This algorithm is based on two dimensional discrete Fourier transform(2DFT).The phase of the reference watermark is shifted randomly in the 2DFT domain to obtain many embedding watermarks.They are correlated with one another and have the same correlation with the reference one.To decide the presence of the watermark,the detector compares the correlation coefficient with the decision threshold.The simulation results show that with the proper threshold,the reference watermark can be used to detect the embedding watermark,but other embedding watermarks cannot.The publication of reference watermark does not compromise the embedding one.This algorithm realizes the public verification of watermark,and needs only one reference watermark for detecting embedding watermarks,which decreases the watermark storage.
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With the rapid growth of networked multimedia data systems, copyright protection of proprietary digitized media has gained importance. Inserting a robust and invisible signal that clearly identifies the owner or the recipient is beginning to emerge as the solution. Previous research in the field of watermarking has been successful in inserting a 'static' watermark, which endures ownership rights but is not as robust and tamper-proof as the 'dynamic' watermarks. This paper presents a novel invisible and robust watermarking technique that aims at dynamically inserting the watermark in digital images. Dynamic generation of watermark ensures that whenever the image is viewed, the watermark inserted in the image is different from the previous one providing more security against copyright attacks. This is accomplished by bundling the viewer and the image together, in which the viewer is responsible for embedding the new watermark using the spread spectrum watermarking algorithm every time. We have implemented the proposed scheme and present experimental results.
Digital Watermarking Alliance
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