An Overview of Digital Image Steganography

Abstract

Hiding Capacity plays a vital role for efficient covert communication. This is achieved by Steganography. Steganography is the science of hiding the information into the other information so that the hidden information appears to be nothing to the human eyes. There are many ways to hide information inside an image, audio/video, document etc. But Image Steganography has its own advantages and is most popular among the others. This paper gives a review of various methods such as image domain and transformation domain algorithms available for implementing Image Steganography. In this paper, a high-capacity Image Steganography schemes are discussed for different file formats. Covert communication is taking place by encrypting the password for information to be protected. The intended receiver will decrypt the information using that password.