Analysis of Hierarchical B Pictures and MCTF
Analysis of Hierarchical B Pictures and MCTF
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DOI：
10.1109/icme.2006.262934
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发表时间：
2006-07
期刊：
影响因子：
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通讯作者：
H. Schwarz;D. Marpe;T. Wiegand
中科院分区：
文献类型：
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作者：
H. Schwarz;D. Marpe;T. Wiegand
在本文中，提出了对H.264/MPEG4-AVC与层次B图片符合编码的调查。我们分析编码延迟和内存需求，描述改进的编码器控制的详细信息，并比较不同编码延迟的编码效率。此外，通过使用相同的编码结构和相似程度的编码器优化，将层次B图片编码的编码效率与基于MCTF的编码进行了比较。我们的仿真结果事实证明，与广泛使用的IBBP相比，可以以增加编码延迟为代价实现超过1 dB的结构编码。进一步的实验表明，使用MCTF编码中的其他更新步骤获得的编码效率提高通常小于所需的开环编码器控制所带来的损失
In this paper, an investigation of H.264/MPEG4-AVC conforming coding with hierarchical B pictures is presented. We analyze the coding delay and memory requirements, describe details of an improved encoder control, and compare the coding efficiency for different coding delays. Additionally, the coding efficiency of hierarchical B picture coding is compared to that of MCTF-based coding by using identical coding structures and a similar degree of encoder optimization. Our simulation results turned out that in comparison to the widely used IBBP...structure coding gains of more than 1 dB can be achieved at the expense of an increased coding delay. Further experiments have shown that the coding efficiency gains obtained by using the additional update steps in MCTF coding are generally smaller than the losses resulting from the required open-loop encoder control