视频编码中一种新的用于几何块划分的变换结构

袁媛1, 郑萧桢2, 何芸1

doi:10.3969/j.issn.1007-2861.2013.03.005

上海大学学报(自然科学版) >

2013 , Vol. 19 >Issue 3: 240 - 244

DOI: https://doi.org/10.3969/j.issn.1007-2861.2013.03.005

音视频编码标准

视频编码中一种新的用于几何块划分的变换结构

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1. 清华大学清华信息科学与技术国家实验室, 北京 100084; 2. 华为技术有限公司海思半导体和元件事业部研发部, 广东深圳 518129

收稿日期: 2013-05-19

网络出版日期: 2013-06-30

基金资助

国家重点基础研究发展计划(973 计划)资助项目(2009CB320903); 国家科技重大专项资助项目(2010ZX03004-003)

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A New Transform Structure for Geometry Motion Partitioning in Video Coding

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1. Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China; 2. R&D Department of Hisilicon Semiconductor and Component Business Department, Huawei Technologies, Shenzhen 518129, Guangdong, China

Received date: 2013-05-19

Online published: 2013-06-30

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摘要

针对几何块划分技术提出了一种任意形状的变换结构. 虽然几何块划分技术比现有视频编码标准中采用的块划分方式更为灵活, 但其所对应的变换结构并未得到合理设计, 从而导致变换效率下降. 因此, 提出对两个任意形状的残差块分别进行任意形状的变换, 并通过翻转的方法保留像素间的相关性. 实验结果表明, 将任意形状的变化结构应用于几何块划分技术可以节约1.16%~3.05%比特率.

关键词： 变换块; 几何块划分; 任意形状的变换

本文引用格式

袁媛1, 郑萧桢2, 何芸1 . 视频编码中一种新的用于几何块划分的变换结构[J]. 上海大学学报(自然科学版), 2013 , 19(3) : 240 -244 . DOI: 10.3969/j.issn.1007-2861.2013.03.005

Abstract

This paper proposes a transform structure with arbitrary shape blocks for geometry block partitioning. A square coding block is split into two arbitrary shaped prediction blocks by geometry partitioning, which is more flexible than the partitioning method used in current video coding standards. In the current design, using a square transform block for combined square residual block is not reasonable and will affect transform efficiency. To further improve the transform structure, we propose that the two arbitrary shaped residual blocks are transformed separately with arbitrary shaped transform blocks. A turnover method is used to retain the correlation of residuals. Experimental results show that a bit rate saving of 1.16%~3.05% can be achieved.

Key words： geometry block partitioning; transform block; transform with arbitrary shaped block

参考文献

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