Review of Spatial and Frequency Domain Steganographic Approaches

Abstract

Now days, by the fast evolution of internet it is very important to protect secret information from cyberpunks while communication. Steganography is the technique that exerts for invisible broadcasting, in which unfrequented data or information is transmitted and collected. In digital image steganography, conveyance is achieved by embedding the data into cover-image for producing the steganographic-image. Till date number of techniques has been proposed for embedding the secret message in multimedia object like images. This paper is aimed at reviewing couple of techniques in the spatial as well as frequency domain. These techniques are comparing in terms of robustness and imperceptibility using peak signal to noise ratio.