A blind watermarking scheme using new nontensor product wavelet filter banks

Xinge You*, Liang Du, Yiu Ming CHEUNG, Qiuhui Chen

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

132 Citations (Scopus)


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 this paper, we utilize special symmetric matrices to construct the new nontensor product wavelet filter banks, which can capture the singularities in all directions. Empirical studies will show their advantages of revealing singularities in comparison with the existing wavelets. Based upon these new wavelet filter banks, we, therefore, propose a modified significant difference watermarking algorithm. Experimental results show its promising results.

Original languageEnglish
Article number5497149
Pages (from-to)3271-3284
Number of pages14
JournalIEEE Transactions on Image Processing
Issue number12
Publication statusPublished - Dec 2010

Scopus Subject Areas

  • Software
  • Computer Graphics and Computer-Aided Design

User-Defined Keywords

  • Nontensor product wavelet filter
  • singularities
  • watermarking


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