Bit allocation for spatial scalability in H.264/SVC

Abstract—We propose a model-based spatial layer bit allocation algorithm for H.264/SVC in this work. The spatial scalability of H.264/SVC is achieved by a multi-layer approach, where an enhancement layer is bound by the dependency on its preceding layers. The inter-layer dependency is decoupled in our analysis by a careful examination of the signal flow in the H.264/SVC encoder. We show that the rate and the distortion (RD) characteristics of a dependent layer can be represented by a number of independent functions with a group of pictures (GOP) as a basic coding unit. Finally, a low complexity spatial layer bit allocation scheme is developed using the proposed GOP-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 significantly improved from current reference software JSVM.

• Type: Conference
• Year: 2008
• Where: MMSP
• Authors: Jiaying Liu, Yongjin Cho, Zongming Guo, C. C. Jay Kuo
• Keywords: Bit Allocation Algorithm, Layer Bit Allocation, MMSP 2008, Multimedia, Spatial Layer Bit