Khalifa, Othman Omran and Yusof, Yusnita
(2011)
Applications of digital watermarking : current and future trends.
In:
Multimedia Encryption, Transmission and Authentication.
IIUM Press, Kuala Lumpur, pp. 198-203.
Abstract
A digital watermark is a secret key dependant signal inserted into digital data (images, sound,texts) and which can be later detected/extracted in order to make an assertion about the data. Technically, the digital watermark is represented as a kind of 'natural' noise. The
identification information is encoded into the original unwatermarked data by adding more 'natural' noise and/or rearranging existing noise. The locations for embedding the watermark as well as the value of the watermark are determined by secret elements
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