Definition:Digital watermarking techniques are based on information hiding techniques similar to steganographic approaches with the overall goal to embed information into a cover signal, usually multi media data.
The term digital watermarking was used for the first time by Tirkel et al in [8], actually written in two words: “water mark”. Instead of a confidential or hidden communication, watermarking addresses the security aspects of data and user authentication or data integrity protection, where a digital watermark is a perceptually transparent pattern inserted in digital data using an embedding algorithm and an embedding key. A detection algorithm using the appropriate detection key can retrieve the watermark information. In most approaches the embedding and detection keys are secret, see more details in [1] or [10].
Difference between cover and marked cover.
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References
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Steinebach, M., Dittmann, J., Neuhold, E. (2006). Digital Watermarking. In: Furht, B. (eds) Encyclopedia of Multimedia. Springer, Boston, MA. https://doi.org/10.1007/0-387-30038-4_60
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DOI: https://doi.org/10.1007/0-387-30038-4_60
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