Digital Watermarking Using Watermark Reordering Based on Discrete Cosine Transform 


Vol. 9,  No. 5, pp. 609-614, Oct.  2002
10.3745/KIPSTB.2002.9.5.609


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  Abstract

Watermarking is embedding a digital signal called as watermark into images to claim the ownership. In this paper, a new digital watermarking algorithm based on DCT (Discrete Cosine Transform) which enhances invisibility and robustness is proposed to improve conventional digital watermarking method using DCT. In the proposed method, it is possible to enhance invisibility and robustness using watermark reordering in which the relative significance of original DCT coefficients can be preserved in watermarked DCT coefficients, and the distortions of original DCT coefficients can be minimized. The experimental results show that the proposed method improves invisibility approximately 9~12 [dB] and is more robust to various attacks than the conventional method.

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[IEEE Style]

S. H. Bae, "Digital Watermarking Using Watermark Reordering Based on Discrete Cosine Transform," The KIPS Transactions:PartB , vol. 9, no. 5, pp. 609-614, 2002. DOI: 10.3745/KIPSTB.2002.9.5.609.

[ACM Style]

Sung Ho Bae. 2002. Digital Watermarking Using Watermark Reordering Based on Discrete Cosine Transform. The KIPS Transactions:PartB , 9, 5, (2002), 609-614. DOI: 10.3745/KIPSTB.2002.9.5.609.

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