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Read e-book online Digital Watermarking PDF

By Ingemar Cox, Matthew Miller, Jeffrey Bloom, Mathew Miller

electronic watermarking is a key component to copyright defense. It offers an answer to unlawful copying of electronic fabric and has many different beneficial purposes equivalent to broadcast tracking and the recording of digital transactions. Now, for the 1st time, there's a ebook that focuses completely in this intriguing know-how. electronic Watermarking covers the an 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 varied ends to which those applied sciences are being utilized. consequently, extra foundation is laid for destiny advancements during this box, supporting the reader comprehend and expect new methods and functions. * Emphasizes the underlying watermarking rules which are appropriate for all media: pictures, video, and audio. * Discusses a large choice of purposes, theoretical ideas, detection and embedding innovations and the foremost homes of electronic watermarks--robustness, constancy, information payload, and safety * Examines copyright defense and plenty of different functions, together with broadcast tracking, transaction monitoring, authentication, replica regulate, and equipment keep watch over. * offers a sequence of designated examples referred to as "Investigations" that illustrate key watermarking ideas and practices. * comprises an appendix within the publication and on the net containing the resource code for the examples. * contains a complete word list of watermarking terminology

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Extra resources for Digital Watermarking

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If users of Works are supplied with watermark detectors, they should be able to identify the owner of a watermarked Work, even after the Work has been modified in ways that would remove a textual copyright notice. Digimarc’s watermark for images was designed with precisely this application in mind. 1 APPLICATIONS 17 bundling it with Adobe’s popular image processing program, Photoshop. When Digimarc’s detector recognizes a watermark, it contacts a central database over the Internet, and uses the watermark message as a key to find contact information for the image’s owner.

There are several types of organizations and individuals interested in broadcast monitoring. Advertisers, of course, want to ensure that they receive the airtime purchased from broadcasting firms. 1 And copyright owners want to ensure that their property is not illegally rebroadcast by pirate stations. We can use watermarks for broadcast monitoring by putting a unique watermark in each video or sound clip prior to broadcast. Automated monitoring stations can then receive broadcasts and look for these watermarks, identifying when and where each clip appears.

Varied, and include identification of the copyright owner, indication to recording equipment that the marked content should not be recorded, verification that content has not been modified since the mark was embedded, and the monitoring of broadcast channels looking for marked content. 1 Information Hiding, Steganography, and Watermarking Watermarking is closely related to the fields of information hiding and steganography. These three fields have a great deal of overlap and share many technical approaches.

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