Channel Modelling for watermark attacks

Muberra Simsek Sungur, G. Bozdagi Akar
 

"Data Hiding" is the process of secretly embedding information inside a data source without changing its perceptual quality. Two main applications of data hiding is watermarking and steganography. The rapid evolution in multimedia and the ease of generating identical and unauthorized digital data challenges the need to establish reliable methods for copyright protection and authentication, which is the main motivation behind watermarking. Likely, the need to establish secure invisible channels for covert communications motivate the study on steganography.

 Our purpose in this study is to model the watermarking channel through a communication theoretic approach in order to investigate the performance and capacity bounds of current techniques and to study on a detector model that successfully retrieves the embedded information, no matter to which attacks it has been subjected to.