Reversible Data Hiding by Reduplicated Exploiting Modification Direction Method

Abstract

Zhang et al. in 2006 proposed a data hiding technique called Exploiting Modification Direction (EMD) with good capacity and high image quality. Related follow-up improvements are proposed by other scholars to raise the change between pixel values thus increasing the capacity and without reversibility. This paper utilizes the high image quality feature of EMD to develop a reversible data hiding method while maintaining high capacity, acceptable image quality, and reversibility.

Data Hiding In Contourlet Coefficients Based On Their Energy

“…There are two major research areas in data hiding techniques: irreversible data hiding and reversible data hiding. Irreversible data hiding technique cannot recover images back to cover images even after the receiver retrieved the embedded secret message, reversible data hiding technique, stego-images can be restored back to the original images after retrieving the embedded secret data [2].…”