A Blind Watermarking Scheme Using New Nontensor Product Wavelet Filter Banks

As an effective method for copyright protection of digital products against illegal usage, watermarking in wavelet domain has recently received considerable attention due to the desirable multiresolution property of wavelet transform. In general, images can be represented with different resolutions by the wavelet decomposition, analogous to the human visual system (HVS). Usually, human eyes are insensitive to image singularities revealed by different high frequency subbands of wavelet decomposed images. Hence, adding watermarks into these singularities will improve the imperceptibility that is a desired property of a watermarking scheme. That is, the capability for revealing singularities of images plays a key role in designing wavelet-based watermarking algorithms. Unfortunately, the existing wavelets have a limited ability in revealing singularities in different directions. This motivates us to construct new wavelet filter banks that can reveal singularities in all directions. In thi...

• Type: Journal
• Year: 2010
• Where: TIP
• Authors: Xinge You, Liang Du, Yiu-ming Cheung, Qiuhui Chen
• Keywords: Education, TIP 2010, Watermarking Algorithm, Wavelet, Wavelet Filter Banks