Image Steganography Techniques: An Overview
Nagham Hamid
University Malaysia Perils (UniMAP) School of Communication and Computer Engineering Penang, Malaysia
nagham_fawa@yahoo.com
Abid Yahya
University Malaysia Perlis (UniMAP) School of Communication and Computer Engineering Perlis, Malaysia
R. Badlishah Ahmad
University Malaysia Perlis (UniMAP) School of Communication and Computer Engineering Perlis, Malaysia
Osamah M. Al-Qershi
School of Electrical & Electronic Engineering University of Science Malaysia (USM) Penang, Malaysia
Abstract Steganography is one of the methods used for the hidden exchange of information and it can be defined as the study of invisible communication that usually deals with the ways of hiding the existence of the communicated message. In this way, if successfully it is achieved, the message does not attract attention from eavesdroppers and attackers. Using steganography, information can be hidden in different embedding mediums, known as carriers. These carriers can be images, audio files, video files, and text files. The focus in this paper is on the use of an image file as a carrier, and hence, the taxonomy of current steganographic techniques for image files has been presented. These techniques are analyzed and discussed not only in terms of their ability to hide information in image files but also according to how much information can be hidden, and the robustness to different image processing attacks. Keywords: Adaptive Steganography, Current Techniques, Image Files, Overview, Steganography, Taxonomy.
1. INTRODUCTION
In this modern era, computers and the internet are major communication media that connect different parts of the world as one global virtual world. As a result, people can easily exchange information and distance is no longer a barrier to communication. However, the safety and security of long-distance communication remains an
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