| 基于H.264的双向帧内预测研究 |
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| 引用本文： | 刘西娟.基于H.264的双向帧内预测研究[J].科学技术与工程,2011,11(15). |
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| 作者姓名： | 刘西娟 |
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| 作者单位： | 西安航空职工大学宝成工学院,宝鸡,721006 |
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| 摘 要： | 双向帧内预测（Bi-directional Intra Prediction，BIP）为了提高H.264的帧内编码效率，提出了两个方案：一是改变了宏块中子块的编码顺序；二是使用两种预测模式生成新的预测模式。本文采用三个典型的视频序列对双向帧内预测进行了实验，并将其与H.264标准帧内预测算法进行对比，从实验结果可以得出，使用双向帧内预测算法比不使用双向帧内预测算法的PSNR值平均增加0.25，码率平均减少了2.96%，编码时间平均增加了222%。
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| 关 键 词： | H.264 双向帧内预测 编码顺序 模式合并 |
| 收稿时间： | 2011/2/16 0:00:00 |
| 修稿时间： | 2011/2/16 0:00:00 |
Research on Bi-directional Intra Prediction of H.264 |
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| Liu xi juan.Research on Bi-directional Intra Prediction of H.264[J].Science Technology and Engineering,2011,11(15). |
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| Authors: | Liu xi juan |
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| Institution: | LIU Xi-juan(Baocheng Engineering Institute of Xi'an Aviation Employee's University,Baoji 721006,P.R.China) |
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| Abstract: | In order to increase the intra coding efficiency, two schemes are proposed in Bi-directional Intra Prediction (BIP).One is to exchange the coding orders, while the other is to merge the two predictive modes to a new predictive mode.In this paper, we evaluated performance with three typical video sequences. The simulation result shows that the Bi-directional Intra Prediction is able to reduce 2.96% coding rate, while increasing the coding time by 222% and the PSNR by 0.25. |
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| Keywords: | H 264 Bi-directional intra prediction coding orders merged modes |
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