Discontinuity in SVD embedding mapping used for watermarks

Kazuo Ohzeki, Yuki Seo, Engyoku Gi

Research output: Contribution to journalArticlepeer-review

Abstract

It is possible for Singular Value Decomposition (SVD) watermark embedding to have a quasi-one-way functionality. While basic SVD embedding has the drawback of being non-reversible, an advanced SVD method which uses a reversible relation only works one-way. When embedding takes place, the decomposing matrix obtained from the original image differs from the one obtained from the embedded image. This paper demonstrates that there is a distinct difference which shows discontinuity in the Euclidean Norm when evaluated numerically. This evidence points towards the probability that SVD embedding is resilient to inversion attacks.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalInternational Journal of Computer Science and Applications
Volume7
Issue number3
Publication statusPublished - 2010 Oct 13

Keywords

  • Eigenvalue
  • Inversion attack
  • Mapping
  • Norm
  • One-way function
  • Rank
  • SVD

ASJC Scopus subject areas

  • Computer Science Applications

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