Journal
IEEE TRANSACTIONS ON IMAGE PROCESSING
Volume 22, Issue 12, Pages 5010-5021Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIP.2013.2281422
Keywords
Pairwise prediction-error expansion (pairwise PEE); reversible data hiding (RDH); 2D prediction-error histogram (2D PEH)
Funding
- 973 Program [2011CB302204]
- National Natural Science Funds for Distinguished Young Scholar [61025013]
- National NSF of China [61210006, 61272355]
- PCSIRT [IRT 201206]
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In prediction-error expansion (PEE) based reversible data hiding, better exploiting image redundancy usually leads to a superior performance. However, the correlations among prediction-errors are not considered and utilized in current PEE based methods. Specifically, in PEE, the prediction-errors are modified individually in data embedding. In this paper, to better exploit these correlations, instead of utilizing prediction-errors individually, we propose to consider every two adjacent prediction-errors jointly to generate a sequence consisting of prediction-error pairs. Then, based on the sequence and the resulting 2D prediction-error histogram, a more efficient embedding strategy, namely, pairwise PEE, can be designed to achieve an improved performance. The superiority of our method is verified through extensive experiments.
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