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Color image watermarking based on a fast structure-preserving algorithm of quaternion singular value decomposition.
Mingcui Zhang
Wenxv Ding
Ying Li
Jianhua Sun
Zhihong Liu
Published in:
Signal Process. (2023)
Keyphrases
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structure preserving
singular value decomposition
image watermarking
multiscale
singular values
pattern recognition
computational complexity
machine learning
wavelet transform
least squares
closed form
qr decomposition