Watermarking via zero assigned filter banks

Zeynep Yücel, A. Bülent Özgüler

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In order to identify the owner and distributor of digital data, a watermarking scheme in frequency domain for multimedia files is proposed. The scheme satisfies the imperceptibility and persistence requirements and it is robust against additive noise. It consists of a few stages of wavelet decomposition of several subblocks of the original signal using special zero assigned filter banks. By assigning zeros to filters on the high frequency portion of the spectrum, filter banks with frequency selective response are obtained. The information is then inserted in the wavelet-decomposed and compressed signal. Several robustness tests are performed on male voice, female voice, and music files, color and gray level images. The algorithm is tested under white Gaussian noise and against JPEG compression and it is observed to be robust even when exposed to high levels of corruption.

Original languageEnglish
Pages (from-to)467-479
Number of pages13
JournalSignal Processing
Issue number2
Publication statusPublished - Feb 2010
Externally publishedYes


  • Watermarking
  • Wavelets
  • Zero assignment

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Signal Processing
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering


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