High-fidelity reversible data hiding based on pixel-value-ordering and pairwise prediction-error expansion |
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| Affiliation: | 1. School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jiangxi 333403, China;2. School of Data and Computer Science, Sun Yat-sen University, Guangdong 510006, China;3. School of Mathematics and Informatics, South China Agricultural University, Guangzhou 510642, China;4. Department of Electronics and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA;1. Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China;2. Beijing Key Laboratory of Advanced Information Science and Network Technology, Beijing 100044, China |
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| Abstract: | Pixel-value-ordering (PVO) technique refers to the process of first ranking the pixels in a block and then modifying the maximum/minimum for reversible data hiding (RDH). This paper discusses the PVO embedding in two-dimensional (2D) space and utilizes the prediction-error pair within a block for data embedding. We focus on not only the exploitation of conventional PVO embedding but also its effective implementation in 2D form. The PVO embedding is extended into a 2D form by integrating the pairwise prediction-error expansion, and a reversible 2D mapping adapted to the special distribution of prediction-error pairs is proposed. Moreover, an adaptive mapping selection mechanism is proposed to treat separately rough and smooth prediction-error pairs to further optimize the embedding performance. Experimental results show that the proposed method outperforms the previous PVO-based methods. |
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| Keywords: | Reversible data hiding Pixel-value-ordering Pairwise prediction-error expansion Reversible 2D mapping |
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