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Color image zero-watermarking based on fast quaternion generic polar complex exponential transform.
Hong-Ying Yang
Shu-Ren Qi
Pan-Pan Niu
Xiang-Yang Wang
Published in:
Signal Process. Image Commun. (2020)
Keyphrases
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color images
fourier transform
real world
complex systems
polar coordinates
digital images
color space
color texture
high level
color information
rotation invariant
cartesian coordinates
reversible watermarking