Steganography is the science of secret communication. It comes under the assumption that if the feature is visible, the point of attack is evident. This book investigates current state-of-the-art methods and provides a new and efficient approach to digital image steganography. It also establishes a robust steganographic system called Steganoflage. Steganoflage advocates an object-oriented approach in which skin-tone detected areas are selected for embedding where possible. The key issues in this book are: 1) a new image encryption method tailored to digital images and steganography/watermarking, 2) a new, efficient and real-time skin-tone detection algorithm and 3) a new embedding method using the RBGC, in the Wavelet domain. Each of these components is tested against relevant performance measurements. A series of interesting contemporary applications are shown. This book is dedicated to digital image steganography, and is the cream of three years of focused work, presented in such a way to be the ideal companion for researchers both beginners and professionals. The simplified presentation allows researchers and students from other disciplines to grasp its essentials.