Gain-shape optimized dictionary for matching pursuit video coding
Signal Processing
Multipath Unicast and Multicast Video Communication over Wireless Ad Hoc Networks
BROADNETS '04 Proceedings of the First International Conference on Broadband Networks
Multiple description video coding using coefficients ordering and interpolation
Image Communication
Multiple description coding with redundant expansions and application to image communications
Journal on Image and Video Processing
Frame-based multiple-description video coding with extended orthogonal filter banks
EURASIP Journal on Applied Signal Processing
Unbalanced quantized multiple state video coding
EURASIP Journal on Applied Signal Processing
Multiple description video coding by coefficients ordering and interpolation
MobiMedia '06 Proceedings of the 2nd international conference on Mobile multimedia communications
Interference aware multipath selection for video streaming in wireless ad hoc networks
IEEE Transactions on Circuits and Systems for Video Technology
Multilple description coding for error-resilient video transmission
MIV'05 Proceedings of the 5th WSEAS international conference on Multimedia, internet & video technologies
Video multicast over wireless ad hoc networks
WSEAS TRANSACTIONS on COMMUNICATIONS
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Multiple description coding (MDC) is an error-resilient source coding scheme that creates multiple bitstreams of approximately equal importance. The reconstructed signal based on any single bitstream has an acceptable quality. However, a higher quality reconstruction can be achieved with a larger number of bitstreams. We develop a multiple description video coding scheme based on a three-loop structure. We modify the discrete cosine transform structure to the matching pursuits framework and evaluate performance gain using maximum-likelihood (ML) enhancement when both descriptions are available. We find that ML enhancement works best for low motion sequences and results in gains of up to 1.3 dB in terms of average PSNR. Rate distortion performance is characterized. Performance comparison is made between our MDC scheme and single description coding (SDC) schemes over lossy channels, including two state Markov channels and Rayleigh fading channels. We find that MDC outperforms SDC in bursty slowly varying environments. In the case of Rayleigh fading channels, interleaving helps SDC close the gap and even outperform MDC depending on the amount of interleaving performed, at the expense of additional delay