A Blind 3D Mesh Watermarking Scheme Based on Local Coordinate System

This paper develops a novel watermarking method for 3D meshes. In the algorithm, one local coordinate system is created for each embedding primitive first. Then the watermark, which is a readable string, is encoded into a binary sequence and embedded bit by bit by modifying the position of vertices´ projections in the local coordinate system. The watermarked model is achieved by calculating the new position of the watermarked vertices from their modified projections. The proposed scheme does not require the original model for detecting watermarks. The experimental results show the efficiency of the algorithm both in visual quality and in robustness against translation, rotation, scaling, cropping and vertex permutation