STEGANOGRAPHY SYSTEM BASED ON BPCS TO THE IWT IMAGE

Abstract

Steganography is a technique to make secret message imperceptible to human eyes by embedding it in some vessel data. We call the visible/audible part of the vessel data "external information", and the embedded data "internal information." The external information is not so valuable to the data owner. Digital Steganography exploits the use of a host data to hide a piece of information in such a way it is imperceptible to a human observer. In our project an image Steganography system, in which the data hiding (embedding) is realized in bit planes of sub band wavelets coefficients obtained by using the Integer Wavelet Transform (IWT) is implemented. To increase data hiding capacity while keeping the imperceptibility of the hidden data, the replaceable IWT coefficient areas are defined by a complexity measure used in the Bit-Plane Complexity Segmentation Steganography (BPCS). The proposed system shows a high data hiding capacity. All of the traditional steganographic techniques have l...