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Reversible data hiding in encrypted images with somewhat homomorphic encryption based on sorting block-level prediction-error expansion.
Lizhi Xiong
Danping Dong
Published in:
J. Inf. Secur. Appl. (2019)
Keyphrases
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prediction error
image data
input image
image classification
reversible data hiding
pixel values
bit rate
data hiding
video sequences
gray level
error correction
jpeg images