Reversible Data Hiding Base on Histogram Shift for 3D Vertex

Watermarking is a very active research field and its application to 2D still images and audio signals have been widely used also, but watermarking of 3D mesh object has not been heavily researched, reversible 3D watermarking especially. This paper proposes a reversible data hiding scheme for 3D vertex. We first select last few digits of vertices coordinate value which should be perceptually invisible and classify them base on some previous conditions. Then we find the proper coordinate to embed data. The original model can be perfectly recovered if it is intact. Our scheme is suitable for some specific applications where high accuracy of the original model must be guaranteed.