Video Processing and Communications
Video Processing and Communications
Video transport in wireless ATM
ICIP '95 Proceedings of the 1995 International Conference on Image Processing (Vol. 3)-Volume 3 - Volume 3
Performance analysis of two-level forward error correction for lost cell recovery in ATM networks
INFOCOM '95 Proceedings of the Fourteenth Annual Joint Conference of the IEEE Computer and Communication Societies (Vol. 2)-Volume - Volume 2
End-to-end rate-distortion optimized MD mode selection for multiple description video coding
EURASIP Journal on Applied Signal Processing
Multiple-description vector quantization with lattice codebooks: design and analysis
IEEE Transactions on Information Theory
Design of multiple description scalar quantizers
IEEE Transactions on Information Theory
Design of entropy-constrained multiple-description scalar quantizers
IEEE Transactions on Information Theory
Video coding with optimal inter/intra-mode switching for packet loss resilience
IEEE Journal on Selected Areas in Communications
Analysis of video transmission over lossy channels
IEEE Journal on Selected Areas in Communications
A mathematical analysis of the DCT coefficient distributions for images
IEEE Transactions on Image Processing
Multiple description coding using pairwise correlating transforms
IEEE Transactions on Image Processing
Overview of the H.264/AVC video coding standard
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Rate-distortion analysis for H.264/AVC video coding and its application to rate control
IEEE Transactions on Circuits and Systems for Video Technology
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Multiple description coding (MDC) provides an excellent error resilient approach for transmitting video over wireless ad hoc networks. In this paper, we propose an improvement to this scheme by jointly selecting the quantization offsets in different paths to achieve the best overall video quality at the decoder. The statistical distribution of the transform coefficients in the encoded video sequence is parameterized using a Laplacian model. The optimal offset values are computed by solving a multi-level optimization problem based on the statistics of the transform coefficients and the individual path failure probabilities. In order to reduce the computational complexity, the encoding modes for the motion vectors and transform coefficients are collected in the first step. In the second step, the model parameter is calculated from the transform coefficients and the offset search is performed when the model parameter between frames deviates beyond the pre-set threshold. In the final step, the stored modes and the respective offset values are directly used for encoding the two bit streams. The simulation results using H.264/AVC system confirm the advantages of the proposed approach under different packet loss conditions.