An image watermarking algorithm via zero assigned filter banks

Author

Yücel, Zeynep ; Özgüler, A. Bülent

Author_Institution

Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara

fYear

2005

fDate

21-21 Dec. 2005

Firstpage

363

Lastpage

368

Abstract

In this paper a new method for digital image watermarking based on zero assigned filter banks and embedded zero tree wavelet (EZW) algorithm is presented. An image is partitioned into 128 times 128 subblocks and each block is processed in a three stage decomposition structure by a filter bank which is assigned a zero around the stop band. The coefficients to be marked are chosen according to the EZW algorithm. This method not only provides a robust watermarking scheme but may also be used as an effective compression strategy. 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

Keywords

Gaussian noise; channel bank filters; data compression; image coding; watermarking; wavelet transforms; zero assignment; JPEG compression; embedded zero tree wavelet; image watermarking algorithm; white Gaussian noise; zero assigned filter banks; Channel bank filters; Data security; Degradation; Discrete wavelet transforms; Filter bank; Filtering; Image coding; Noise robustness; Partitioning algorithms; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Information Technology, 2005. Proceedings of the Fifth IEEE International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-9313-9

Type

conf

DOI

10.1109/ISSPIT.2005.1577124

Filename

1577124