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Preserving robustness and removability for digital watermarks using subsampling and difference correlation.
Chin-Chen Chang
Pei-Yu Lin
Jieh-Shan Yeh
Published in:
Inf. Sci. (2009)
Keyphrases
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semi fragile watermarking
high correlation
correlation coefficient
digital images
linear relationship
digital media
e learning
motion vectors
computational efficiency
wavelet domain
watermarking scheme
highly correlated
copyright protection
image authentication
high robustness