Wavelet-based multiple description coding of 3-D geometry

Norkin A., Bici M. O., Akar C. B., Gotchev A., Astola J.

Conference on Visual Communications and Image Processing 2007, San-Jose, Costa Rica, 30 January - 01 February 2007, vol.6508 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 6508
  • Doi Number: 10.1117/12.704644
  • City: San-Jose
  • Country: Costa Rica
  • Middle East Technical University Affiliated: Yes


In this work, we present a multiple description coding (MDC) scheme for reliable transmission of compressed three dimensional (3-D) meshes. It trades off reconstruction quality for error resilience to provide the best expected reconstruction of 3-D mesh at the decoder side. The proposed scheme is based on multiresolution geometry compression achieved by using wavelet transform and modified SPIHT algorithm. The trees of wavelet coefficients are divided into sets. Each description contains the coarsest level mesh and a number of tree sets coded with different rates. The original 3-D geometry can be reconstructed with acceptable quality from any received description. More descriptions provide better reconstruction quality. The proposed algorithm provides flexible number of descriptions and is optimized for varying packet loss rates (PLR) and channel bandwidth.