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  • Research Article
  • Open Access

A Packetized SPIHT Algorithm with Overcomplete Wavelet Coefficients for Increased Robustness

EURASIP Journal on Advances in Signal Processing20062006:019156

https://doi.org/10.1155/ASP/2006/19156

  • Received: 19 August 2004
  • Accepted: 25 March 2005
  • Published:

Abstract

This paper presents a wavelet-based image encoding scheme with error resilience and error concealment suitable for transmission over networks prone to packet losses. The scheme involves partitioning the data into independent descriptions of roughly equal lengths, achieved by a combination of packetization and modifications to the wavelet tree structure without additional redundancy. With a weighted-averaging-based interpolation method, our proposed encoding scheme attains an improvement of about 0.5–1.5 dB in PSNR over other similar methods. We also investigate the use of overcomplete wavelet transform coefficients as side information for our encoding scheme to improve the error resilience when severe packet losses occur. Experiments show that we are able to achieve a high coding performance along with a good perceptual quality for the reconstructed image.

Keywords

  • Packet Loss
  • Interpolation Method
  • Encode Scheme
  • Wavelet Coefficient
  • Code Performance

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Authors’ Affiliations

(1)
Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX 79409-3102, USA

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Copyright

© Y. Sriraja and T. Karp 2006

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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