Paper Info
Title
Optimal Rate Allocation In Multi-User Wyner-Ziv Video Coding Systems With Coded Key Frames
Abstract
In this paper, we present a rate-distortion analysis for a distributed video coding system, which allows for the selection of a suitable quantization parameter for the H.264 coded key frames, under rate constraints. On the other hand, an adaptive rate allocation and quantization algorithm with a frame dropping strategy is used for the transmission of Wyner-Ziv frames in a multi-user scenario, without the need for a permanent feedback channel. The available bandwidth is dynamically shared between Wyner-Ziv and Key frames. Turbo-codes are used for the joint source-channel coding of the Wyner-Ziv frames and for the protection of the H.264 bitstream from channel errors. Simulation results show the superior performance of the proposed technique, compared to traditional systems with fixed quantization parameters and compression rates.
Year
DOI
Venue
2008
10.1109/PIMRC.2008.4699621
2008 IEEE 19TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS
Keywords
Field
DocType
Distributed video coding, dynamic rate allocation, multi-user systems, Wyner-Ziv coding
Reference frame,Computer science,Motion compensation,Communication channel,Real-time computing,Coding (social sciences),Decoding methods,Data compression,Quantization (signal processing),Bitstream
Conference
Citations 
PageRank 
References 
2
0.42
6
Authors
3
Name
Order
Citations
PageRank
Charles Yaacoub18314.28
Joumana Farah215817.80
Béatrice Pesquet-Popescu387691.43