Increasing Security of Images through Image Steganography: A Review

The image processing is the method which is employed to process the image pixels for different objectives. The image data is very sensitive. In order to provide security to image data, various techniques has been proposed in the present times. Among these numerous proposed methods, image steganography is one of the most efficient techniques and methods which provide greater protection to the image data. In the image steganography the sensitive data can be hidden inside the image. The two steps are involved to implement image steganography, in the first step properties of the image are analyzed and in the second phase encoding scheme is implemented to generate final steganography image. In this paper, various techniques of an image steganography are discussed and reviewed in terms of various parameters.