Blind 3D Mesh Watermarking based on Sphere-Shape Template

Abstract

In this paper, we propose a novel blind 3D mesh watermarking scheme based on synchronization using a template. The proposed template has a sphere shape with a basis point and scale information for the watermarking. The template is invariant to translation, rotation, and scale. In the extraction process of the template, the post-processing, which sorts out the genuine template vertices from many candidate vertices, greatly increases the extracting accuracy. The proposed watermarking method is designed to extract the watermark from the rest of the region even if part of the mesh information is cropped. According to the experimental results, the proposed method has a higher robustness against not only cropping but also general signal processing attacks than the previous methods.