Universal Threshold Calculation for Fingerprinting Decoders using Mixture Models

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschungbegutachtet

Authors

Collusion attacks on watermarked media copies are commonly countered by probabilistically generated fingerprinting codes and appropriate tracing algorithms. The latter calculates accusation scores representing the suspiciousness of the fingerprints. In a 'detect many' scenario a threshold decides which scores are associated to the colluders. This work proposes a universal method to calculate thresholds for different decoders solely with knowledge of the accusation scores from the actual attack. Applying mixture models on the scores, the threshold is set up satisfying the selected error probabilities. It is independent from the fingerprint generation and can be applied at any decoder. Also no knowledge about the number of attackers or their strategy is needed.
OriginalspracheEnglisch
TitelProceedings of the 3rd ACM Workshop on Information Hiding and Multimedia Security
Anzahl der Seiten6
VerlagAssociation for Computing Machinery, Inc
Erscheinungsdatum17.06.2015
Seiten109-114
ISBN (Print)978-1-4503-3587-4
ISBN (elektronisch)978-1-4503-3587-4
DOIs
PublikationsstatusErschienen - 17.06.2015
VeranstaltungACM Workshop on Information Hiding and Multimedia Security - 2015 - Portland, USA / Vereinigte Staaten
Dauer: 17.06.201519.06.2015
Konferenznummer: 3
http://sigmm.org/events/acm-workshop-information-hiding-and-multimedia-security-2015

DOI

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