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Efficient Image and Channel Coding for Wireless Packet Networks

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Efficient Image and Channel Coding for Wireless Packet Networks
We combine multiple description (MD) quantization, entropy coding, and data partitioning to improve the error resiliency of images over varying packet loss channels. Our proposed scheme degrades gracefully as channel conditions worsen. A multidimensional extension of the two-channel multiple description scalar quantizer (MDSQ) improves robustness. A high performance wavelet image coder is designed for MDSQ, using the Set-Partitioning-In-HierarchicalTrees (SPIHT) algorithm for entropy coding. Experimentally, with descriptions, the new coder outperforms previous reports at any loss rate.
P. Greg Sherwood, Xiaodong Tian, Kenneth Zeger
Added 25 Oct 2009
Updated 25 Oct 2009
Type Conference
Year 2000
Where ICIP
Authors P. Greg Sherwood, Xiaodong Tian, Kenneth Zeger
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