Watermarking Techniques for DRM Applications

Watermarking Techniques for DRM Applications

Alessandro Piva (University of Florence, Italy), Roberto Caldelli (University of Florence, Italy), Alessia De Rosa (University of Florence, Italy), Mauro Barni (Università di Siena, Italy) and Vito Cappellini (University of Florence, Italy)
Copyright: © 2009 |Pages: 30
DOI: 10.4018/978-1-60566-118-6.ch004
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The need to safeguard the property rights of multimedia content from unauthorized copying and the possibility to determine the true owners of the asset can be faced by resorting to efficient digital watermarking systems. This chapter presents a mathematical formulation to define a digital watermarking system and describes the general requirements to be satisfied, with more emphasis given to the aspects of security, robustness, and imperceptibility. After this general discussion, the two main classes of digital watermarking schemes, namely the spread-spectrum watermarking and the side-informed watermarking are explained by highlighting their main advantages and drawbacks. This analysis is completed by the description of a practical implementation of a digital image watermarking scheme. Finally, the use of watermarking systems in the framework of a DRM is deeply analyzed.
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Mathematical Formulation Of The Watermarking Problem

A digital watermarking system can be modelled as described in Figure 1 (Barni, 2004). The inputs of the system are a certain application dependent information, and the original host content, that could be an audio file, an image or a video sequence, here indicated as C. The to-be-hidden information is usually represented as a binary string b= (b1,b2,….,bk), referred as the watermark code. The watermark embedder hides the watermark code b into the host asset C to produce a watermarked content Cw, usually making use of a secret information K needed to tune some parameters of the embedding process and to allow the recovery of the watermark only to authorized users having access to that secret information.

Figure 1.

The proposed model describing a digital watermarking system

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List of Reviewers
Table of Contents
Athanasios Skodras
Dimitrios Tsolis, Lambros Drossos, Spyros Sioutas, Theodore Papatheodorou
Chapter 1
Alfredo M. Ronchi
“Creativity is one of the highest forms of human energy. It is a defining human trait that enables us to design and use tools, while giving us the... Sample PDF
Intellectual Property Rights
Chapter 2
Ioannis Kostopoulos
This chapter highlights the need for using copyright protection tools in our digital transactions. The main tools of copyright protection, such as... Sample PDF
Digital Rights Management: A New Trend or a Necessity
Chapter 3
Image Watermarking  (pages 56-70)
Nikos Tsirakis
This chapter describes image watermarking, the most common and widespread category of media files are images. The evolution of the Internet and the... Sample PDF
Image Watermarking
Chapter 4
Alessandro Piva, Roberto Caldelli, Alessia De Rosa, Mauro Barni, Vito Cappellini
The need to safeguard the property rights of multimedia content from unauthorized copying and the possibility to determine the true owners of the... Sample PDF
Watermarking Techniques for DRM Applications
Chapter 5
V. E. Fotopoulos, I. D. Kostopoulos
This chapter introduces JPEG 2000 as an application field for image authentication and the new technology of digital image watermarking. The new... Sample PDF
Watermarking and Authentication in JPEG2000
Chapter 6
Evanthia Tsilichristou
The basic principle of watermarking is the addition of the watermark signal to the host data that we wish to watermark. The addition is taking place... Sample PDF
Securing and Protecting the Copyright of Digital Video Through Watermarking Technologies
Chapter 7
Nikos Nikolaidis
Intellectual property rights protection and management of multimedia data is essential for the deployment of e-commerce systems involving... Sample PDF
Digital Rights Management of Images and Videos Using Robust Replica Detection Techniques
Chapter 8
Shiguo Lian
In this chapter, the digital fingerprinting technology that is used to trace illegal distributors in multimedia content distribution is... Sample PDF
Digital Fingerprinting Based Multimedia Content Distribution
Chapter 9
Tom S. Chan
While delivering content via the Internet can be efficient and economical, content owners risk losing control of their intellectual property. Any... Sample PDF
A Digital Rights Management System for Educational Content Distribution
Chapter 10
Dimitrios P. Meidanis
This chapter investigates intellectual property rights clearance of as part of e-commerce. Rights clearance is viewed as another online transaction... Sample PDF
Digital Rights Management and E-Commerce Transactions: Online Rights Clearance
Chapter 11
Dimitra Pappa, Lefteris G. Gortzis
With emerging technologies constantly creating new possibilities for organisations to manage their information resources, this chapter proposes a... Sample PDF
Digital Rights Management in Organisations: A Critical Consideration with a Socio-Technical Approach
Chapter 12
Georgios Stilios, Dimitrios K. Tsolis
The issue addressed in this chapter is the design, implementation, and evaluation of a watermarking application, especially focused on the... Sample PDF
An Advanced Watermarking Application for the Copyright Protection and Management of Digital Images of Cultural Heritage Case Study: “Ulysses”
Chapter 13
Andrea de Polo
Digital Rights Management (DRM) describes a set of functionalities which control access to, and the use of, copyright material. In particular, they... Sample PDF
Digital Rights Management in the Cultural Heritage Arena: A Truth or a Myth
Chapter 14
Christos Golfinopoulos
The purpose of this chapter is to provide a brief overview of the legal framework that applies to Digital Rights Management (DRM) information and... Sample PDF
Digital Rights Management: A European Law Perspective
Chapter 15
Vagelis Papakonstantinou
DRM systems have been implemented in the past few years by the Content Industry as the panacea against all copyright (and Intellectual Property... Sample PDF
Legal Issues for DRM: The Future
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