A Mesh Partitioning Approach for 3D Mesh Oblivious Watermarking

Mesh partitioning approach, widely used in 3-D meshes compression and coding, is able to be extended to exploit local features and embed watermark string repeatedly, and thus it may improve watermarking robustness This paper presents a segmentation method which can predict the partition boundary of stego-mesh with a small amount of additional data The face normal principal component analysis is employed to determine the meshes' canonical positions Some additional scattered information from the elevation of cover-mesh in canonical coordinate systems, instead of the presence of the cover-mesh, is picked up to match the elevation of stego-mesh With the aim to realign the stego-mesh approximately and plot out the partition boundary, the deflected degree of coordinate system is estimated Experimental results show that the new partitioning scheme is stable against the cropping and simplification attacks