Information-Theoretic Data-Hiding: Recent Achievements And Open Problems

In this paper we introduce and develop a framework for visual data-hiding technologies 17 that aim at resolving emerging problems of modern multimedia networking. First, we introduce the main open issues of public network security, quality of services control and 19 secure communications. Secondly, we formulate digital data-hiding into visual content as communications with side information and advocate an appropriate information21 theoretic framework for the analysis of different data-hiding methods in various applications. In particular, Gel’fand-Pinsker channel coding with side information at 23 the encoder and Wyner-Ziv source coding with side information at the decoder are used for this purpose. Finally, we demonstrate the possible extensions of this theory for 25 watermark-assisted multimedia processing and indicate its perspectives for distributed communications. 27