TY - GEN

T1 - A watermarking scheme based on the characteristic of addition among DCT coefficients

AU - Kuribayashi, Minoru

AU - Tanaka, Hatsukazu

N1 - Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2000.

PY - 2000

Y1 - 2000

N2 - Generally, low frequency domain may be useful to embed a watermark in an image. However, if a watermark is embedded into low frequency components, blocking effects may occur in the image. Then considering blocking effects, we study some characteristics among DCT coeficients and find some interesting mutual relations. Here, the robustness of many schemes based on the orthogonal transformations such as DCT may be doubtful against geometric transformations. For the distortions produced by some geometric transformations, we propose a searching protocol to find the watermarked block which is rotated and shifted. In the proposed scheme, a watermark can remain in the attacked image with very high probability in our scheme. Further, the watermark becomes more robust than the above scheme using error-correction.

AB - Generally, low frequency domain may be useful to embed a watermark in an image. However, if a watermark is embedded into low frequency components, blocking effects may occur in the image. Then considering blocking effects, we study some characteristics among DCT coeficients and find some interesting mutual relations. Here, the robustness of many schemes based on the orthogonal transformations such as DCT may be doubtful against geometric transformations. For the distortions produced by some geometric transformations, we propose a searching protocol to find the watermarked block which is rotated and shifted. In the proposed scheme, a watermark can remain in the attacked image with very high probability in our scheme. Further, the watermark becomes more robust than the above scheme using error-correction.

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U2 - 10.1007/3-540-44456-4_1

DO - 10.1007/3-540-44456-4_1

M3 - Conference contribution

AN - SCOPUS:23044522787

SN - 3540414169

SN - 9783540414162

T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

BT - Information Security - 3rd International Workshop, ISW 2000, Proceedings

A2 - Pieprzyk, Josef

A2 - Seberry, Jennifer

A2 - Okamoto, Eiji

PB - Springer Verlag

T2 - 3rd International Workshop on Information Security, ISW 2000

Y2 - 20 December 2000 through 21 December 2000

ER -