A Multimedia Watermark scheme based on double density dual-Tree discrete wavelet transform and singular value decomposition

As the use of multimedia technology increases, its copyright protection and content authentication has become an issue to be addressed. Watermarking is a known technology that can help protect multimedia contents from illegal copying and access protection. Multimedia Watermarking based on discrete wavelet transform, which has been the most widespread technology for securing multimedia, is not shift invariant. This study introduces multimedia watermarking scheme based a nearly shift invariant double density dual-Tree discrete wavelet transform (DD-DT-DWT), in combination with singular value decomposition (SVD). The experimental results shows that multimedia watermarking based on DD-DT-DWT-SVD is more robust as compared to watermarking based on DWT, DWT-SVD, and DD-DT-DWT.