Watermarking 3D mesh by spherical parameterization

  • Authors:
  • Li Li;David Zhang;Zhigeng Pan;Jiaoying Shi;Kun Zhou;Kai Ye

  • Affiliations:
  • State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China and Centre for Multimedia Signal Processing and Department of Computing, Biometrics Research Centre, Hong Kong Polyte ...;Centre for Multimedia Signal Processing and Department of Computing, Biometrics Research Centre, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China;State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China;State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China;State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China

  • Venue:
  • Computers and Graphics
  • Year:
  • 2004

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Abstract

In this paper, a robust 3D trianglular mesh watermarking algorithm is presented by applying spherical parameterization. First, we transform the coordinate signals of the 3D triangular mesh into spherical signals using a global spherical parameterization and an even sampling scheme. Then, spherical harmonic transformation is used to generate some data for embedding watermarks. As a result, the watermarks can be embedded in the Fourier-frequency domain of the original mesh. Experimental results show that our watermarking algorithm is robust since watermarks can be extracted without mesh alignment or re-meshing under a variety of attacks, including noise addition, crop, filtering, enhancement, rotation, translation, scale and re-sampling.