Optimum detection and decoding of multiplicative watermarks in DFT domain

Qiang Cheng, Thomas S. Huang

Research output: Contribution to journalConference article

Abstract

Digital watermarking is a powerful technique to help protect the intellectual property right as well as the security of multimedia content. Multiplicative watermarks have strong robustness, and are well-suited for the copyright protection. We investigate the optimal detection and decoding of multiplicative watermarks in DFT domain. For a class of non-Gaussian distributions, we derive locally optimum detector structure and extend it to decoding multiple-bit message. In watermark detection, optimal thresholding for given false-alarm rates is derived. The optimal decoding of multiple-bit messages in data hiding is constructed using generalized maximum likelihood estimation. Theoretical results are verified using experiments.

Original languageEnglish (US)
Pages (from-to)3477-3480
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume4
DOIs
StatePublished - 2002
Event2002 IEEE International Conference on Acoustic, Speech, and Signal Processing - Orlando, FL, United States
Duration: May 13 2002May 17 2002

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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