Multiple re-watermarking using varying non-stationary mra with parameterized wavelet filters
Jutta Hämmerle-Uhl, Andreas Uhl, Hartmut Wernisch · 2008
Non-stationary Multiresolution Analysis is shown to be a possible means to limit watermark interference in multiple re-watermarking algorithms if employing a different set of wavelet filters for each watermark embedded. It turns out that a significant improvement of watermark detection correlation values may be achieved in such a scenario and a surprisingly high number of watermarks can be embedded using standard wavelet-based embedding strategies.