7 November 2005 Wavelet based mobile video watermarking: spread spectrum vs. informed embedding
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Proceedings Volume 6001, Wavelet Applications in Industrial Processing III; 60010J (2005) https://doi.org/10.1117/12.629929
Event: Optics East 2005, 2005, Boston, MA, United States
Abstract
The cell phone expansion provides an additional direction for digital video content distribution: music clips, news, sport events are more and more transmitted toward mobile users. Consequently, from the watermarking point of view, a new challenge should be taken: very low bitrate contents (e.g. as low as 64 kbit/s) are now to be protected. Within this framework, the paper approaches for the first time the mathematical models for two random processes, namely the original video to be protected and a very harmful attack any watermarking method should face the StirMark attack. By applying an advanced statistical investigation (combining the Chi square, Ro, Fisher and Student tests) in the discrete wavelet domain, it is established that the popular Gaussian assumption can be very restrictively used when describing the former process and has nothing to do with the latter. As these results can a priori determine the performances of several watermarking methods, both of spread spectrum and informed embedding types, they should be considered in the design stage.
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M. Mitrea, F. Prêteux, S. Duţă, M. Petrescu, "Wavelet based mobile video watermarking: spread spectrum vs. informed embedding", Proc. SPIE 6001, Wavelet Applications in Industrial Processing III, 60010J (7 November 2005); doi: 10.1117/12.629929; https://doi.org/10.1117/12.629929
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