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 -