This book focuses on image based security techniques, namely visual cryptography, watermarking, and steganography. This book is divided into four sections. The first section explores basic to advanced concepts of visual cryptography. The second section of the book covers digital image watermarking including watermarking algorithms, frameworks for modeling watermarking systems, and the evaluation of watermarking techniques. The next section analyzes steganography and steganalysis, including the notion, terminology and building blocks of steganographic communication. The final section of the book describes the concept of hybrid approaches which includes all image-based security techniques. One can also explore various advanced research domains related to the multimedia security field in the final section. The book includes many examples and applications, as well as implementation using MATLAB, wherever required. Features: Provides a comprehensive introduction to visual cryptography, digital watermarking and steganography in one book Includes real-life examples and applications throughout Covers theoretical and practical concepts related to security of other multimedia objects using image based security techniques Presents the implementation of all important concepts in MATLAB

This is a very creative work focused on designing an intelligent living-space with automatic speech recognition system to control all home appliances basically electrical and electronics appliances. This research is totally dedicated for those who are physically disabled. In our research we are trying to automate various home appliances by interfacing them with PC parallel port and controlling them through speech. It is the easiest way of Human-Computer interaction. We are introducing a new technique in which we use speech recognition principles to generate control commands at the parallel port. The programming languages we used in this research are Matlab and Autoit.