Using of Polar Codes in Steganography
Idy Diop, Birahime Diouf, Sidi Mohamed Farssi, Khaly Tall, Papa Alioune Fall, Abdou Khadre Diop, K. Sylla · 2013
In this paper, we propose a new steganographic scheme based on the polar codes.The scheme works according to two steps.The first offers a stego vector from given cover vector and message.The stego vector provided by the first method can be the optimal; in this case, the insertion is successful with a very low complexity.Otherwise, we formalize our problem in a linear program form with initial solution the stego vector given by the first method, to converge to the optimal solution.Our scheme works with the case of a constant profile as well with any profile; it is then adapted to the case of wet paper.Tests on multiple gray scale images showed its good performance in terms of minimizing the embedding impact.