A Review on Spatial and Transform Domain-Based Image Steganography

Abstract

Steganography is a secret way of communicating, hiding the existence of information. It hides the message secretly without letting anyone know about its existence. This chapter gives a brief of various image steganography techniques in the spatial domain and transforms domain with their advantages and disadvantages. The characteristics to measure the performance of an image steganography technique are given as well. It also introduces the idea of drawing out the embedded data from the cover object called steganalysis.