By Ingemar Cox, Matthew Miller, Jeffrey Bloom, Mathew Miller
electronic watermarking is a key factor to copyright safety. It presents an answer to unlawful copying of electronic fabric and has many different worthy purposes akin to broadcast tracking and the recording of digital transactions. Now, for the 1st time, there's a booklet that focuses solely in this intriguing know-how. electronic Watermarking covers the the most important learn findings within the box: it explains the rules underlying electronic watermarking applied sciences, describes the necessities that experience given upward thrust to them, and discusses the various ends to which those applied sciences are being utilized. accordingly, extra foundation is laid for destiny advancements during this box, aiding the reader comprehend and count on new ways and purposes. * Emphasizes the underlying watermarking rules which are correct for all media: pictures, video, and audio. * Discusses a large choice of purposes, theoretical ideas, detection and embedding thoughts and the major homes of electronic watermarks--robustness, constancy, info payload, and defense * Examines copyright defense and lots of different functions, together with broadcast tracking, transaction monitoring, authentication, reproduction regulate, and machine keep watch over. * provides a chain of designated examples referred to as "Investigations" that illustrate key watermarking thoughts and practices. * comprises an appendix within the booklet and on the net containing the resource code for the examples. * encompasses a accomplished word list of watermarking terminology
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Additional info for Digital Watermarking
This risk of piracy is exacerbated by the proliferation of high-capacity digital recording devices. , copies of a copy) was generally very poor. However, with digital recording devices, songs and movies can be recorded with little, if any, degradation in quality. Using these recording devices and using the Internet for distribution, would-be pirates can easily record and distribute copyright-protected material without appropriate compensation being paid to the actual copyright owners. Thus, content owners are eagerly seeking technologies that promise to protect their rights.
2 The earliest reference we have found  is assigned to the Muzak Corporation, famous for providing “elevator music”, and may be the source of the many rumors that Muzak contained subliminal messages. Fig. 2 Example of a unique identification code printed in the background of a text document. Instead, we use the term adversary to describe anyone who attempts to remove, disable, or forge a watermark for the purpose of circumventing its original purpose. There are few technologies for transaction tracking that do not fall under our deﬁnition of watermarking.
This and similar ideas have been suggested by many researchers [10, 290]. An example of where this type of localized authentication might be useful would be in a police investigation of a crime. Imagine that the police receive a surveillance video that has been tampered with. If the video is authenticated with a traditional signature, all the police would know is that the video is inauthentic and cannot be trusted. However, if they use a watermark designed to yield localized authentication, they might discover that each frame of the video is reliable except for a license plate on a car.