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Improving SVD-based image watermarking via block-by-block optimization on singular values.
Huang-Nan Huang
Der-Fa Chen
Chiu-Chun Lin
Shuo-Tsung Chen
Wei-Che Hsu
Published in:
EURASIP J. Image Video Process. (2015)
Keyphrases
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image watermarking
singular value decomposition
singular values
dct coefficients
feature extraction
pattern recognition
digital images
spatial domain
geometric distortions