视频编码中错误隐藏技术研究
本文主要对H.264的错误隐藏技术进行研究，首先概括了H.264视频编码标准，然后简述了H.264的抗误码技术，并详细介绍了H.264所使用的错误隐藏技术。
之后针对现有错误隐藏技术的缺点，本文提出了一种新的的帧间错误隐藏算法。一方面，使用交错扫描的二次隐藏方法。使得块匹配更加精确。另一方面，在运动估计的步骤中使用简单的双向预测，有效地降低估计误差。
最后使用JM平台进行对比实验，在主客观质量两方面与H.264算法进行对比实验。
关键词 H.264 视频编码 错误隐藏 帧间
毕业论文设计说明书外文摘要
Title Research on error concealment techniques of video coding
Abstract
In recent years, with the rapid development of computer network technology and video transmission technology, digital video technology in the field of communications and broadcasting won the widespread application, for most of the video applications, in the transmission process of error is inevitable. The error of video information can seriously affect the output quality of video. Therefore, the error generated during the transmission is very important for the development of digital video technology.
This paper mainly studies the error concealment algorithm of the decoder. Firstly, the standard of H.264 video compression is introduced, then the error resilience technology of H.264 is introduced, and the error concealment algorithm of H.264 is introduced in detail.
For the shortcomings of the existing error concealment technology, an improved inter frame error concealment algorithm is proposed. On the one hand, in order to improve the condition of the adjacent macro blocks in the damaged macro block, a staggered two time hiding method is proposed. Makes block matching more precise. On the other hand, the estimation error can be effectively reduced by using simple bidirectional forecast in the motion estimation step.
Finally, the simulation experiment of the improved algorithm is carried out with the JM platform, and the experiment results are compared with the H.264 algorithm in the subjective and objective quality of the two aspects.
Keywords H.264 Video coding Error concealment Inter frame
目 次
1 绪论 1
1.1 选题背景及研究意义 1
1.2 国内外研究现状 1
1.3 论文研究内容与安排 2
2 H.264视频编码标准概述 4
2.1 H.264标准综述 4
2.2 H.264关键技术 4
2.3 本章小结 7
3 H.264错误隐藏技术研究 8
3.1 H.264的抗误码技术 8
3.2 H.264错误隐藏技术详述 11
3.3 本章小结 14
4 H.264帧间错误隐藏算法改进 15
4.1 改进算法思路 15
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