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A Novel Non-Redundant Contourlet Transform for Robust Image Watermarking Against Non-Geometrical and Geometrical Attacks

Duan, G, Ho, ATS and Zhao, X (2009) A Novel Non-Redundant Contourlet Transform for Robust Image Watermarking Against Non-Geometrical and Geometrical Attacks In: VIE 2008, 2008-07-29 - 2008-08-01, Xi'an, China.

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In contrast to conventional methods operating in the wavelet domain, a new robust watermarking algorithm using non- redundant contourlet transform is presented in this paper. We explore the high degree of directionality and anisotropy of this transform to obtain a sparser image representation. Through experiments, we find that most of the energy relations between parent and children non-redundant contourlet coefficients maintain invariant before and after JPEG compression. Performance improvement is obtained by means of embedding a watermark exploiting the modulation of the energy relations. Test results based on 16 set of attacks using 6 images are obtained. The results show that our non- redundant contourlet method is highly robust to different kinds of attacks including non-geometrical and geometrical attacks. These include JPEG 2000 compression (as low as QF=10), 400 pixels circular shifting, and contrast stretching, (as low as 20%). Comparisons with two other wavelet methods further demonstrate the potential of the non- redundant contourlet in digital watermarking applications.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Surrey research (other units)
Authors : Duan, G, Ho, ATS and Zhao, X
Date : 9 January 2009
Contributors :
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Copyright 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:26
Last Modified : 23 Jan 2020 12:47

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