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      • Department of Computer Engineering
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      Connectivity-guided adaptive lifting transform for image like compression of meshes

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      Author
      Köse, K.
      Çetin, A.E.
      Güdükbay, U.
      Onural L.
      Date
      2007
      Journal Title
      Proceedings of 3DTV-CON
      Language
      English
      Type
      Conference Paper
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      Please cite this item using this persistent URL
      http://hdl.handle.net/11693/26999
      Abstract
      We propose a new connectivity-guided adaptive wavelet transform based mesh compression framework. The 3D mesh is first transformed to 2D images on a regular grid structure by performing orthogonal projections onto the image plane. Then, this image-like representation is wavelet transformed using a lifting structure employing an adaptive predictor that takes advantage of the connectivity information of mesh vertices. Then the wavelet domain data is encoded using "Set Partitioning In Hierarchical Trees" (SPIHT) method or JPEG2000. The SPIHT approach is progressive because the resolution of the reconstructed mesh can be changed by varying the length of the 1D data stream created by the algorithm. In JPEG2000 based approach, quantization of the coefficients determines the quality of the reconstruction. The results of the SPIHT based algorithm is observed to be superior to JPEG200 based mesh coder and MPEG-3DGC in rate-distortion.
      Published as
      http://dx.doi.org/10.1109/3DTV.2007.4379443
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      • Department of Computer Engineering 1107
      • Department of Electrical and Electronics Engineering 2963

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