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

Minoru Kuribayashi, Hatsukazu Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationInformation Security - 3rd International Workshop, ISW 2000, Proceedings
EditorsJosef Pieprzyk, Jennifer Seberry, Eiji Okamoto
PublisherSpringer Verlag
ISBN (Print)3540414169, 9783540414162
Publication statusPublished - 2000
Externally publishedYes
Event3rd International Workshop on Information Security, ISW 2000 - Wollongong, Australia
Duration: Dec 20 2000Dec 21 2000

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other3rd International Workshop on Information Security, ISW 2000

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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