Ashwin, AC and Ramakrishnan, KR and Srinivasan, SH (2003) Wavelet domain residual redundancy-based descriptions. In: Signal Processing: Image Communication, 18 (7). pp. 549-560.
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This paper presents a new multiple description method for wavelet transform coded images. This method combines partitioning with concealment to produce descriptions. An optimal concealment method for wavelet transform coded images for a given partitioning is derived based on the statistical characteristics in wavelet domain. Concealment in LL subband is treated differently and is based on its smoothness property. An optimal partitioning method is derived corresponding to the concealment. We have designed a coder for wireless image transmission, which emphasizes the need for source and channel coding interaction based on residual redundancy. Optimal channel rate allocation is derived depending upon source significance and channel status information. The method is computationally inexpensive and does not sacrifice compression efficiency. Simulations for wireless image transmission have shown promising results.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier.|
|Keywords:||Wavelet transform;Multiple description;Concealment; Partitioning;Wireless transmission|
|Department/Centre:||Division of Electrical Sciences > Electrical Engineering|
|Date Deposited:||01 Jun 2006|
|Last Modified:||19 Sep 2010 04:28|
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