IMAGE STEGANOGRAPHY TECHNIQUES: A REVIEW

Data security and data hiding are the two important area of research now a days. There are such large number of research is progressing in the field, for example, web security, steganography, cryptography. Steganography is a trail of events used to put a sheltered data in a host media with small debilitating in have and the best approach to remove the ensured data after some time. Reversible Steganography ceaselessly is a system to introduce additional message into some distortion unsatisfactory cover media, for instance, military or therapeutic images, with a reversible way so the principal cover data can be immaculately restored after extraction of the covered message. Most covering strategies perform data embedding by changing the substance of a host media. These sorts of data hiding strategies are in this way irreversible. In different areas like military, legitimate and medical imaging introduction of some mutilation is allowable, ceaseless loss of data is unwanted. These features the prerequisite for Reversible (Lossless) data embedding methodologies. This paper displays a review of various steganography techniques.