Effective Watermark Detection Using Asymmetric Thresholds 


Vol. 10,  No. 6, pp. 619-628, Oct.  2003
10.3745/KIPSTB.2003.10.6.619


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  Abstract

In this paper, an effective watermark detection technique in the wavelet transform domain is proposed. In this proposed method, the image is 2-level wavelet transformed, and then the watermark with a binary logo is embedded into middle band except baseband and high band to consider invisibility and robustness. In this paper, we use an asymmetric thresholds watermarking (ATW) in which detection threshold is higher than inserting threshold in order to enhance watermark detection ratio in attacked images. In watermark detection phase, the detection value is not changed when the difference of the selected wavelet neighboring coefficient pairs is smaller than specific value. The experimental results show that the proposed method has good quality and is robust to various attacks such as the JPEG lossy compression, noise addition, cropping, blurring, etc.

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[IEEE Style]

S. C. Dun and O. H. Seog, "Effective Watermark Detection Using Asymmetric Thresholds," The KIPS Transactions:PartB , vol. 10, no. 6, pp. 619-628, 2003. DOI: 10.3745/KIPSTB.2003.10.6.619.

[ACM Style]

Sin Chang Dun and O Hae Seog. 2003. Effective Watermark Detection Using Asymmetric Thresholds. The KIPS Transactions:PartB , 10, 6, (2003), 619-628. DOI: 10.3745/KIPSTB.2003.10.6.619.

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