Abstract
Employing the concept of visual cryptography to design a watermarking scheme is introduced in this chapter. A modified visual cryptography is applied to split the genuine watermark into two shadow watermarks. The gain-shape vector quantisation (GSVQ) procedure is then performed to encode the cover image. Afterwards, the shadow watermarks and the VQ indices obtained are processed to generate two user-keys.
The watermarking system presented possesses a number of advantages, including easy implementation (the structure of the GSVQ system is not altered) and stronger security. Experimental results will show its performance.
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© 2009 Springer-Verlag Berlin Heidelberg
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Wang, FH., Pan, JS., Jain, L.C. (2009). Watermarking with Visual Cryptography and Gain-Shape VQ. In: Innovations in Digital Watermarking Techniques. Studies in Computational Intelligence, vol 232. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03187-8_11
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DOI: https://doi.org/10.1007/978-3-642-03187-8_11
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-03186-1
Online ISBN: 978-3-642-03187-8
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