Unbalanced multiple-description video coding with rate-distortion optimization
EURASIP Journal on Applied Signal Processing
A novel square root rate control algorithm for H.264/AVC encoding
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Drift-free multiple description intra video coding
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Rate controlled redundancy-adaptive multiple description video coding
Image Communication
Design of multiple description scalar quantizers
IEEE Transactions on Information Theory
Distributed video streaming using multiple description coding and unequal error protection
IEEE Transactions on Image Processing
A new rate control scheme using quadratic rate distortion model
IEEE Transactions on Circuits and Systems for Video Technology
A unified rate-distortion analysis framework for transform coding
IEEE Transactions on Circuits and Systems for Video Technology
An Accurate Low-Complexity Rate Control Algorithm Based on -Domain
IEEE Transactions on Circuits and Systems for Video Technology
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Unbalanced multiple description coding (U-MDC) of video signals aims to obtain different coding rates for transmission over channels with asymmetric available bandwidth. This paper proposes a new rate control method, based on Multiple Description Scalar Quantisation (MDSQ), to generate unbalanced descriptions for asymmetric multipath video streaming. A new set of index assignment tables combined with an extension of the @r model is devised to generate two unbalanced descriptions with controlled rate, using U-MDC under the general coding framework of H.264/AVC. This work demonstrates that a linear relationship between the rate and percentage of zeros in the transform coefficients of each description is maintained across different description domains, i.e., when moving from the single description domain (SDC) into the MDC domain. The simulation results show that rate-distortion performance of U-MDC is better than its equivalent balanced MDC. The proposed rate control algorithm exhibits high accuracy in achieving different target bitrates and unbalanced ratios between two descriptions. Improved performance is also achieved in video streaming over asymmetric transmission paths, where each description rate can be adapted according to different channel conditions.