Iterative detection method for CDMA-based fingerprinting scheme

Minoru Kuribayashi, Masakatu Morii

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

8 Citations (Scopus)


Digital fingerprinting of multimedia data involves embedding information in the content signal and offers the traceability of illegal users who distribute unauthorized copies. One potential threat to fingerprinting system is collusion, whereby a group of users combines their individual copies in an attempt to remove the underlying fingerprints. Hayashi et. al have proposed hierarchical fingerprinting scheme using the CDMA technique which designed a fingerprint signal by a combination of quasi-orthogonal sequences to increase the allowable number of users. In this paper, we formalize the model of collusion from the viewpoint of a communication channel, and propose a removal operation considering the interference among fingerprints. We also explore the characteristic of the proposed detector and the effects of the removal operation on a detection sequence. By introducing two kinds of thresholds for the determination of the presence of fingerprints, the performance of the proposed detector is enhanced effectively.

Original languageEnglish
Title of host publicationInformation Hiding - 10th International Workshop, IH 2008, Revised Selected Papers
PublisherSpringer Verlag
Number of pages15
ISBN (Print)3540889604, 9783540889601
Publication statusPublished - 2008
Externally publishedYes
Event10th International Workshop on Information Hiding, IH 2008 - Santa Barbara, CA, United States
Duration: May 19 2008May 21 2008

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5284 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other10th International Workshop on Information Hiding, IH 2008
Country/TerritoryUnited States
CitySanta Barbara, CA

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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