Digital Watermarking and Steganography

Watermarking, as we define it, is the practice of hiding a message about an image, audio clip, video clip, or other work of media within that work itself. Although such practices have existed for quite a long time?at least several centuries, if not millennia?the field of digital watermarking only gained widespread popularity as a research topic in the latter half of the 1990s. A few earlier books have devoted substantial space to the subject of digital watermarking. However, to our knowledge, this is the first book dealing exclusively with this field.

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