A Wavelet-Based Watermarking for Digital Images of Different Size

Santa Agreste, Guido Andaloro

Abstract


We describe an digital watermarking algorithm for colour images
protection and authenticity: robust,
not-blind, wavelet-based. Our algorithm can work with any images,
in fact it includes resize techniques that adapt the size of
original image for Wavelet transform. The watermark signal is
calculated in correlation with the image features and statistic
properties. In detection step we apply a re-synchronization
between the original and watermarked image according to the
Neyman-Pearson statistic criterion. Experimentation on a large set
of different images has shown to be resistant against geometric,
filtering, and StirMark attacks with a low rate of false alarm.

[DOI: 10.1685/CSC06002] About DOI

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DOI: http://dx.doi.org/10.1685/




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