... Voyatzis, Nikolaidis and Pitas (1998), Ruanaidh, Dowling and Boland (1996), Ruanaidh and Pun (1997), Hsu and Wu (1996), Ruanaidh, Boland and Dowling (1996), Hernandez, Amado and Perez-Gonzalez ... steganography and watermarking belong to a category of information hiding, but the objectives and conditions for the two techniques are just the opposite. In watermarking, for Digital Watermarking for ... Morimoto and Lu (1996), Zaho, and Silvestre and Dowling (1997) include discussions of watermarking concepts and principles and review developments in transparent data embedding for audio, image, and video...