摘要:源于当今社会信息的发展和多媒体技术的创新,如今的 H.264 和HAVC 等视频编码标准已经远远不及当代社会人对于视频的需求。旷古烁今,就在 2013 年 1 月 26 日,HEVC 这种性的高效视频编码标准诞生了,虽然它有更强 大的压缩性能,但是同时也需要消耗巨大的时间编码。而其中的运动估计技术, 不仅消耗了巨大的时间而且需要超乎一般你的计算量,因此,必须挖掘运动搜索 策略和匹配准则的技术,才能发展 HEVC。66332

该篇文章首先通过对新的标准的原理和概念进行详细的描述,然后对比了 HEVC 和 H.264 标准的区别。用来体现 HEVC 这种新技术在压缩技术上的提高和 对于超高清视频的巨大突破。之后详细的描述了和 HEVC 有关的帧间原理,随后 对搜索策略和匹配准则这个两个重要方面进行了深入讨论。关于搜索策略上的探 讨,除了全搜索作为基本评价还概括了如今经常使用的三步搜索算法、菱形搜索 算法、六边形搜索算法与 HEVC 采用的混合搜索策略进行对比。

毕业论文关键词: HEVC;帧间预测;运动估计;搜索策略;匹配准则

Research on motion estimation algorithm for efficient video coding inter prediction

Abstract: From today's social information development and multimedia technology innovation, today's H.264 and HAVC video coding standards have been

far less than the contemporary society for the video needs. Today, on January 26, 2013, HEVC's revolutionary and efficient video coding standard was born, although it has more powerful compression performance, but also need to consume a huge time code.

And the motion estimation technique, which not only consumes a great amount of time and needs more than the general amount of your calculation, so we must dig the movement search strategy and match the criteria of the technology in order to develop HEVC.

The article first describes the principles and concepts of the new standard, and then compares the differences between the HEVC and H.264 standards. Used to reflect the HEVC this new technology in the compression technology to improve and for ultra-high-definition video a huge breakthrough. Afterwards, we describe the

inter-frame principle related to HEVC, and then discuss the two important aspects of search strategy and matching criterion in depth. In this paper, the three-step search algorithm, the diamond search algorithm, the hexagonal search algorithm and the hybrid search strategy adopted by HEVC are compared, and the comparison of the matching criterion is summarized in this paper. , The matching accuracy and performance comparison of absolute error and (SAD) and minimum mean square error function (MSE) are verified.

Key words: HEVC;inter prediction; motion estimation; search strategy; matching criterion

目 录

1 引言 1

1.1 本课题研究意义 1

1.2 课题研究背景 1

1.3 视频编码标准 1

1.3.1 视频编码的基本框架 3

1.3.2 运动估计的现阶段发展情况 4

1.4 本文内容安排 5

2 HEVC 标准简介 7

2.1 HEVC 编码框架及编码单元结构 7

2.2 编码单元结构 7

2.2.1 CU(Coding Unit) 8

2.2.2 PU(Prediction Unit) 9

2.2.3 TU(TransformUnit)