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Chao Wang, Yang Liu, Xiaohu Guo, Zichun Zhong, Binh Le, Zhigang Deng. Spectral Animation Compression. Journal of Computer Science and Technology, 2015, 30(3): 540-552. doi: 10.1007/s11390-015-1544-z
Citation: Chao Wang, Yang Liu, Xiaohu Guo, Zichun Zhong, Binh Le, Zhigang Deng. Spectral Animation Compression. Journal of Computer Science and Technology, 2015, 30(3): 540-552. doi: 10.1007/s11390-015-1544-z

Spectral Animation Compression

  • This paper presents a spectral approach to compress dynamic animation consisting of a sequence of homeo-morphic manifold meshes. Our new approach directly compresses the field of deformation gradient defined on the surface mesh, by decomposing it into rigid-body motion (rotation) and non-rigid-body deformation (stretching/shearing) through polar decomposition. It is known that the Rotation Group has the algebraic topology of 3-D ring, which is different from other operations like stretching and shearing. Thus we compress these two groups separately, by using Manifold Harmonics Transform to drop out their high-frequency details. Our experimental result shows that our method achieves a good balance between the reconstruction quality and compression ratio. We compare our results quantitatively with other existing approaches on animation compression, using standard measurement criteria.
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