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PVO-Based Reversible Data Hiding Exploiting Two-Layer Embedding for Enhancing Image Fidelity
2020
Symmetry
Recently, Li et al. proposed a data hiding method based on pixel value ordering (PVO) and prediction error expansion (PEE). In their method, maximum and minimum values were predicted and the pixel values were modified to embed secret data. Thereafter, many scholars have proposed improvisations to the original PVO method. In this paper, a Reversible data hiding (RDH) method is proposed where the secret data is dispersed into two layers using different modes of operations. The second layer
doi:10.3390/sym12071164
fatcat:avphnavczbcn3jc5ftxhjbyumi