Architecture Design of Fine Grain Quality Scalable Encoder with CABAC for H.264/AVC Scalable Extension
Architecture Design of Fine Grain Quality Scalable Encoder with CABAC for H.264/AVC Scalable Extension
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用于 H.264/AVC 可扩展扩展的具有 CABAC 的细粒度质量可扩展编码器的体系结构设计
DOI：
10.1007/s11265-009-0378-8
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Liang
中科院分区：
文献类型：
--
作者：
Tzu;Yu;Yi;Shao;Liang
除编码效率外，H.264/AVC的可伸缩性为异质环境中的视频适应提供了良好的功能纸张，提议的扫描量最多可附加纸张架构的FGS编码器和低硬件成本。算法算法，降低上下文的早期上下文建模，首先扫描了区域效率的硬件体系结构。允许外部内存带宽和硅区域。以200 MHz的工作频率或HDTV 1280×720视频，具有130 MHz工作频率的三个FGS增强层。
In addition to coding efficiency, the scalable extension of H.264/AVC provides good functionality for video adaptation in heterogeneous environments. Fine grain scalability (FGS) is a technique to extract video bitstream at the finest quality level under the given bandwidth. In this paper, an architecture of FGS encoder with low external memory bandwidth and low hardware cost is proposed. Up to 99% of bandwidth reduction can be attained by the proposed scan bucket algorithm, early context modeling with context reduction, and first scan pre-encoding. The area-efficient hardware architecture is implemented by layer-wise hardware reuse. Besides, three design strategies for enhancement layer coder are explored so that the trade-off between external memory bandwidth and silicon area is allowed. The proposed hardware architecture can real-time encode HDTV 1920×1080 video with two FGS enhancement layers at 200 MHz working frequency, or HDTV 1280×720 video with three FGS enhancement layers at 130 MHz working frequency.
DOI：
10.1109/tcsvt.2007.905532
发表时间：
2007-09-01
影响因子：
8.4
作者：
Schwarz, Heiko;Marpe, Detlev;Wiegand, Thomas
通讯作者：
Wiegand, Thomas