A Study and Analysis of Reversible Data Hiding Techniques

This overview paper explains several kinds of Reversible Data Hiding (RDH) methods. Reversible data hiding involves concealing data within host media, such as audio, video, and image files. RDH, or lossless data hiding, makes it possible to retrieve the embedded information and then restore the original cover without sacrificing any information. Numerous RDH approaches have been developed. These techniques have been reviewed and summarized in this paper. Different approaches like LSB modification, Prediction error method, Difference expansion and Histogram shifting methods have been reviewed. Encryption is used in images to provide security. Each RDH approach has advantages of its own, and no single strategy is ideal or suitable in every situation. This paper offers a thorough analysis of all the primary approaches of RDH that have been used, as documented in the paper.