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Contourlet domain locally optimum image watermark decoder using Cauchy mixtures based vector HMT model.
Xiang-Yang Wang
Tao-tao Wen
Li Wang
Pan-Pan Niu
Hong-Ying Yang
Published in:
Signal Process. Image Commun. (2020)
Keyphrases
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contourlet domain
multiscale
wavelet domain
image data
similarity measure
digital images
statistical model
image retrieval
estimation algorithm
contourlet transform
fusion model
input image
em algorithm
image features
wavelet transform
gray level
noisy images
low frequency
image segmentation