Wavelets on Trees

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Revision as of 14:28, 13 November 2009 by Godwin (talk | contribs)

General Information

  • This website provides source code for wavelet transforms on trees, with applications to:
    • Distributed data compression for wireless sensor networks
    • Image coding
  • This page is maintained by Godwin Shen
    • Email: godwinsh@usc.edu


Source Code

  • Comments, questions or concerns should be directed to: godwinsh@usc.edu
  • MATLAB source code for wavelets on trees in WSN
    • Last Updated On: November 13, 2009
      • Fixed bugs in transform initialization (11/13/09)
      • Fixed a bug in cost computations (9/24/09)
      • New cost computations added (8/20/09)
    • This code provides implementations of the transforms described in the related publications shown below
    • The main files to start with are Example_LossyCoding.m and Example_LosslessCoding.m


Related Publications

  • G. Shen and A. Ortega, "Transform-based Distributed Data Gathering". Submitted to IEEE Transactions on Signal Processing. arXiv:0909.5177v2
  • G. Shen, S. Pattem and A. Ortega, "Energy-efficient Graph-based Wavelets for Distributed Coding in Wireless Sensor Networks". In Proc. of 2009 IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP'09), Taipei, April 2009. PDF format
  • G. Shen, S. Narang and A. Ortega, "Adaptive Distributed Transforms for Irregularly Sampled Wireless Sensor Networks". In Proc. of 2009 IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP'09), Taipei, April 2009. PDF format
  • G. Shen and A. Ortega, "Optimized Distributed 2D Transforms for Irregularly Sampled Sensor Network Grids Using Wavelet Lifting". In Proc. of 2008 IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP'08), Las Vegas, April 2008. PDF format


Related Links


Acknowledgements

  • This work was supported in part by NASA under grant AIST-05-0081
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