Reversible Data Hiding in Encrypted Images Based on Block Classification Coding of Sparse Representation.

Fuhu Wu Lin Wang Shun Zhang Jie Cui Hong Zhong

Published in: ProvSec (2023)

Keyphrases

sparse representation
image classification
test images
dictionary learning
sparse coding
image features
input image
image data
feature extraction
image representation
reversible data hiding
pattern recognition
image patches
feature vectors
image retrieval
object recognition
coding method
image blocks
natural images
high dimensional data
feature space
feature selection
pixel values