Frame-based bit allocation for spatial scalability in H.264/SVC

Authors:
Jiaying Liu;Yongjin Cho;Zongming Guo
Affiliations:
Institute of Computer Science and Technology, Peking University, Beijing, P.R. China;Department of Electrical Engineering, University of Southern California, Los Angeles, CA;Institute of Computer Science and Technology, Peking University, Beijing, P.R. China
Venue:
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Year:
2009

Citing 3
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Abstract

The spatial scalability of H.264/SVC is achieved by a multi-layer approach, where an enhancement layer is dependent on its preceding layers. To address this dependent issue, we propose a model-based spatial layer bit allocation algorithm for H.264/SVC in this work. The inter-layer dependency is decoupled by analyzing the signal flow in the H.264/SVC encoder. We show that the rate and the distortion (R-D) characteristics of a dependent layer with a frame as a basic coding unit. Finally, a low complexity spatial layer bit allocation scheme is developed using the proposed frame-based RD models. It is shown by experimental results that our proposed bit allocation algorithm can achieve the coding performance close to the optimal R-D performance of full search and is highly improved from current reference codec JSVM.