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Correlation-based watermarking method for image authentication applications

Summary: Correlation-based watermarking method for
image authentication applications
Farid Ahmed
The Catholic University of America
Department of EECS
Washington, D.C. 20064
Ira S. Moskowitz
Naval Research Laboratory
Center for High Assurance Computer
Washington, D.C. 20375
Abstract. We propose a correlation-based digital watermarking tech-
nique for robust image pattern authentication. We hide a phase-based
signature of the image back into its Fourier magnitude spectrum in the
embedding stage. The detector computes the Fourier transform of the
watermarked image and extracts the embedded signature. Authentica-
tion performance is measured by a correlation test of the extracted sig-
nature and the signature computed from the watermarked image. The
quality of the watermarked image is obtained from the peak signal-to-
noise ratio metric. We also furnish simulation results to show the robust-


Source: Ahmed, Farid - Department of Electrical Engineering and Computer Science, Catholic University of America


Collections: Engineering