Lossless Data Hiding Based on Companding Technique and Difference Expansion of Triplets

Authors:
ShaoWei Weng;Yao Zhao;Jeng-Shyang Pan
Affiliations:
-;-;-
Venue:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Year:
2007

Citing 2
Cited 1

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Reversible data embedding using a difference expansion

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Reversible data hiding based on block median preservation

Information Sciences: an International Journal

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Abstract

A reversible data hiding scheme based on the companding technique and the difference expansion (DE) of triplets is proposed in this paper. The companding technique is employed to increase the number of the expandable triplets. The capacity consumed by the location map recording the expanded positions is largely decreased. As a result, the hiding capacity is considerably increased. The experimental results reveal that high hiding capacity can be achieved at low embedding distortion.