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Color image watermarking based on quaternion Fourier transform and improved uniform log-polar mapping.
Junlin Ouyang
Gouenou Coatrieux
Beijing Chen
Huazhong Shu
Published in:
Comput. Electr. Eng. (2015)
Keyphrases
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fourier transform
image watermarking
log polar
frequency domain
signal processing
watermarking algorithm
color images
jpeg compression
discrete wavelet transform
additive noise
computer vision
image sequences
high quality
spatial domain
geometric distortions