Journal on Image and Video Processing
Unbalanced quantized multiple state video coding
EURASIP Journal on Applied Signal Processing
State estimation over packet dropping networks using multiple description coding
Automatica (Journal of IFAC)
Distributed temporal multiple description coding for robust video transmission
EURASIP Journal on Wireless Communications and Networking - Multimedia over Wireless Networks
Impact of packet size on the temporal quality of video transmission over wired-to-wireless network
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia
An efficient error-robust wireless video transmission using link-layer FEC and low-delay ARQ schemes
Journal of Mobile Multimedia
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We describe a robust codec for the transmission of very low bit-rate video over channels with a variety of errors, including random and bursty bit errors and packet loss. The codec exploits adaptivity to give good performance with a low overhead. By only protecting macroblocks which would otherwise be poorly concealed by the decoder the codec allows adaptive selection of the parts of video to protect. For protection, it uses multiple description codes which indirectly provide frequency-based adaptivity by protecting the more significant DCT coefficients. Simulations show significant improvements in the performance of the codec when compared to codecs which use intra macroblock updating (raster scan and random) at the same overhead. The codec is efficient in its use of bits and has good error resilience properties both objectively and subjectively over a wide range of conditions. Further, transcoding of the received bit stream to the standard H.263 syntax is relatively easy