期刊论文

Zhu, Ya-Pei

中文

光电子·激光

1005-0086

2014

25

12

2379-2386

10.16136/j.joel.2014.12.020

湖南省自然科学基金（12JJ6001）资助项目；

本校为通讯机构

针对多视点视频编码(MVC)中部分大宏块模式(SKIP/DIRECT模式,帧间16×16模式)相对于其它模式的计算复杂度低,并且在编码所确定的最优模式中占有相当高比重的特点,本文提出一种基于转移概率的多视点视频快速模式选择算法。首先根据多视点视频当前编码宏块对应时间和视点间宏块及周围宏块的位置几何关系,建立宏块模式参考模型;其次比较参考模型中模式的时间相似度和视点间相似度;最后计算模式之间的转移概率,确定提前结束大宏块模式选择过程的阈值。实验结果表明,本文所提出的快速算法平均节约 MVC时间80.93%,编码质量平均下降0.04 dB,码率平均增加0.27%。

The multiview video coding (MVC) adopts the exhaustive mode decision to achieve high efficiency, at the price of extremely high computational complexity. Compared with the macroblock (MB) mode, the large MB mode (SKIP/DIRECT, inter 16×16) occupies most of the MB mode proportion, while its estimation consumes much less computational complexity than that of other modes. By using temporal and interview correlation between current MB and its adjacent MBs, a fast mode decision for MVC based on transition probability is proposed in this paper. By ut...