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This research book presents a sample of recent advances in information hiding techniques and their applications. It includes:§§Image data hiding scheme based on vector quantization and image graph coloring§§The copyright protection system for Android platform§§Reversible data hiding§§ICA-based image and video watermarking§§Content-based invariant image watermarking§§Single bitmap block truncation coding of color images using cat swarm optimization§§Genetic-based wavelet packet watermarking for copyright protection§§Lossless text steganography in compression coding§§Fast and low-distortion capacity acoustic synchronized acoustic-to-acoustic steganography scheme§§Video watermarking with shot detection.§