May2015 Issue Vol.5 No.5
Ph.D Research Scholar, Department of Computer Science,Erode Arts & Science College (Autonomous), Erode, Tamil Nadu,India
Research Supervisor & Associate Professor
Department of Computer Science, Erode Arts & Science College (Autonomous), Erode, Tamil Nadu, India
Abstract: Steganography is the art of hiding a secretmessage within a larger one in such a way that an observer cannot detect the presence of contents of the hidden message. The Steganography used to transport information from one place to other place through public channel in covert way. Steganography hides the very existence of a message so that if successful it generally attracts no suspicion at all. Many different carrier file formats can be used, but digital images are the most popular because of their frequency on the Internet. The art of information hiding has received much attention in the recent years as security of information has become a big concern in this internet era. Steganography is a technology where modern data compression, information theory, spread spectrum, and cryptography technologies are brought together to satisfy the need for privacy on the Internet. This paper analyses the Spatial Domain and Transform Domain techniques of Steganography which are used for Image Hiding.
Keywords: Steganography, Spatial Domain, Transform Domain, Image Hiding, DCT, DWT.