B-picture coding in AVS video compression standard
文献类型：期刊论文
| 作者 | Ji, Xiangyang2; Zhao, Debin1; Wu, Feng3; Lu, Yan3; Gao, Wen2 |
| 刊名 | SIGNAL PROCESSING-IMAGE COMMUNICATION
 |
| 出版日期 | 2008 |
| 卷号 | 23期号:1页码:31-41 |
| 关键词 | video coding B-picture symmetrical mode direct mode bi-directional prediction |
| ISSN号 | 0923-5965 |
| DOI | 10.1016/j.image.2007.10.003 |
| 英文摘要 | This paper first gives a brief overview of the Chinese audio-video coding standard (AVS(1)) especially on prediction modes of motion compensation for B-picture. Furthermore, two techniques adopted by AVS about how to improve motion compensation for B-picture coding are discussed in detail. The first one is the proposed symmetrical mode that replaces the conventional bi-directional mode, in which only one motion vector is coded and another is derived from the coded one with the assumption of approximate constant-speed motion. It can achieve a better trade-off between prediction accuracy and the bits for coding motion information. The second one is the improved temporal direct mode. It not only solves the problem in AVS on how to correctly derive reference index under the constraint of two reference buffers for both P- and B-pictures but also improves the accuracy of derived motion vectors in temporal direct mode with division-free operations. In experimental results, the proposed symmetrical mode and the improved temporal direct mode were integrated into the H.264/MPEG-4 AVC reference software to exhibit their performances. Furthermore, the B-picture coding performance in AVS is also evaluated using different GOP coding structures. (C) 2007 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000253004000003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.204/handle/2XEOYT63/11337]  |
| 专题 | 中国科学院计算技术研究所期刊论文_英文 |
| 通讯作者 | Ji, Xiangyang |
| 作者单位 | 1.Harbin Inst Technol, Harbin 150006, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing, Peoples R China 3.Microsoft Res Asia, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ji, Xiangyang,Zhao, Debin,Wu, Feng,et al. B-picture coding in AVS video compression standard[J]. SIGNAL PROCESSING-IMAGE COMMUNICATION,2008,23(1):31-41. |
| APA | Ji, Xiangyang,Zhao, Debin,Wu, Feng,Lu, Yan,&Gao, Wen.(2008).B-picture coding in AVS video compression standard.SIGNAL PROCESSING-IMAGE COMMUNICATION,23(1),31-41. |
| MLA | Ji, Xiangyang,et al."B-picture coding in AVS video compression standard".SIGNAL PROCESSING-IMAGE COMMUNICATION 23.1(2008):31-41. |
入库方式： OAI收割
来源：计算技术研究所
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