Greedy Pairing Prediction-error Expansion for Reversible Data Hiding

Abstract

Reversible data hiding (RDH) is a method to embed messages in an image that human eyes are difficult to recognize the differences between the original image and the embedded image. But the method has to make sure that the original image and the embedded information can be exactly recovered. Then, prediction-error expansion (PEE) is a successful way to realize RDH. However, it is fixed when pairing the conventional 2D PEH. So, the capacities and embedding distortion is not ideal. In this paper, we propose a method called greedy pairing prediction-error expansion (GPPEE) based on the method called pairwise reversible data hiding in Ou ô€ô€ ô€œ½ô€ˆ.. GPPEE can achieve more efficient embedding and can improve the embedding distortion.