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Summary: Phase-Signature Based
Watermarking for Multimedia
Authentication: Analysis and
Design
Farid Ahmed (ahmed@cua.edu),
The Catholic University of America, Dept. of
EECS, Washington, DC
Ira S. Moskowitz, Naval Research Laboratory,
Washington, DC
Optics East'05, MM Systems and
Applications VIII, 6015-13
2
Anatomy of the topic
· Problem: Multimedia Authentication
· Solution: Digital Watermarking
· Fourier domain WM
· Analysis of PhaseMark- a blind, semi-fragile
Phase-signature based authentication WM
Why use phase-based signature?
How much error is introduced as part of the
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