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Local Moment Driven PVO Based Reversible Data Hiding
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DOI：10.1109/LSP.2021.3090673.png)
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摘要
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Pixel-value-ordering (PVO) is one of the most widely used reversible data hiding (RDH) framework which efficiently utilizes smooth pixels of the cover image to provide high-fidelity stego-image but with limited embedding capacity. This letter proposes an RDH scheme based on local moment driven pixel value ordering (LM-PVO) which further enhances the effectiveness of smooth pixel's utilization by dividing the fixed-size blocks into two groups. Pixels of each group are sub-divided into two sub-groups based on the local moment of the block so that correlation among the pixels of each sub-group is enhanced. Thus doing, the pixels of each sub-group are grouped based on their intensity values instead of their position as in the conventional PVO-based schemes; this enables information hider to embed a higher amount of secret data while also enhancing the stego-image quality. Experimental results also validate the superiority of the proposed scheme over the existing PVO-based RDH schemes.
Keyword:
Correlation
Image quality
Histograms
Electronic mail
Distortion
Two dimensional displays
Telecommunications
Local moment driven PVO
LM-PVO
pairwise embedding
reversible data hiding
期刊
IF:
9.6
论文数:
1.1W
被引数:
1.7W
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