Abstract
A new difference-histogram modification Reversible Data Hiding (RDH) scheme by using bilinear interpolation prediction is proposed in this paper. First, the proposed method considers each neighboring pixels x and y to predict z by bilinear interpolation on four pixels which are near to pixel-pairs x and y. Then, according to d1 = x−y,d2 = y−zy, and d3 = z−zx, a new coordinate system (d1,d2,d3) is generated. In this three-dimensional coordinate, the proposed method uses six quadrants to embed secret information: points on the specified surface are used for embedding and the extending space surrounded the embedded surfaces are used for shifting. Finally, a new multi-dimension difference-pair-mapping is used to implement the reversible data embedding. Therefore, more embedding conditions are obtained, thereby increase the number of embedded pixels and get more embedding capacity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have