Reversible Data Hiding by Using Optimal Value Data Transfer

Data hiding technique aims to embed a little secret information into a carrier signal by changing. The insignificant accessories for copyright protection or covert communication. Commonly circumstances, the data-hiding operation will influence in distortion signal. However, such distortion, unacceptable to a few purposes, e.G., army or scientific pix. On this case it's vital to embed the further secret message with a reversible method due to the customary contents may also be flawlessly restored after extraction of the hidden knowledge. A number of reversible data hiding tactics were proposed, and they can be roughly labeled into three types: lossless compression basedmethods, difference expansion (DE) schemes and histogram modification (HM) methods.