REVERSIBLE IMAGE DATA HIDING: A SURVEY

Abstract

Information security is necessary to shield secret information from non-legitimate access and information
integrity loss. In this paper different reversible image information hiding techniques are reviewed. The reversible image
information hiding theme may be used in scenarios wherever information security plays a significant role for instance
military, medical science, banks etc. Secure digital communication may be achieved by hiding crucial data inside a
cover image. For security reasons the encryption of cover image is preferred before hiding information. Reversible
image information hiding permits embedding the information within a cover image. At the decoder side the stuffed
information is extracted and cover image is retrieved back by using decryption. In these techniques, lossless recovery of
a cover image and embedded information is ensured.