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Letter to the Editor regarding "Dynamic watermarking scheme for quantum images based on Hadamard transform" by Song et al.
Yu-Guang Yang
Yan Wang
Qian-Qian Zhao
Published in:
Multim. Syst. (2016)
Keyphrases
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watermarking scheme
image data
geometric distortions
input image
test images
ground truth
image retrieval
hadamard transform
pixel values
transform domain
spread spectrum
image sequences
image matching
estimation algorithm
geometric attacks