There have been a number of proposed methods to conceal information using steganographic techniques. Images are the favoured carrier due to the large capacity for concealed information and relative ease to work with. A number of methods exist to conceal text as well as image data within images. This paper proposes an information embedding scheme with improved concealment of secret images within larger images using a fractional embedding scheme. It explores the natural redundancy of image data, as well as limitations of human perception and statistical attacks to provide better subjective and objective concealment.

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Steganography Steganalysis Hiding Semi-blind Blind Image-in-image Steganography