计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (21): 170-173.

• 图形、图像、模式识别 • 上一篇    下一篇

一种基于镜头描述的可伸缩视频码流提取方法

柳 伟1,谭 浩2,陈 旭2,梁永生1   

  1. 1.深圳信息职业技术学院 信息技术研究所,广东 深圳 518029
    2.深圳大学 信息工程学院,广东 深圳 518060

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-07-21 发布日期:2011-07-21

Bitstream extraction for scalable video coding based on shot description

LIU Wei1,TAN Hao2,CHEN Xu2,LIANG Yongsheng1   

  1. 1.Institute of Information Technology,Shenzhen Institute of Information Technology,Shenzhen,Guangdong 518029,China
    2.College of Information Engineering,Shenzhen University,Shenzhen,Guangdong 518060,China

  • Received:1900-01-01 Revised:1900-01-01 Online:2011-07-21 Published:2011-07-21

摘要:

可伸缩视频码流提取使视频流能够适应不同带宽的网络带宽和不同处理能力的终端。提出一种基于镜头描述的视频码流提取框架,通过离线预处理获得原始视频镜头的描述,建立参考帧二叉树,基于码流分析和镜头描述实现可伸缩码流提取。实验表明该方法可以实现快速码流提取,在不损失编码效率的前提下保证视觉质量。

关键词: 可伸缩视频编码, 镜头描述, 二叉树, 码流提取

Abstract: In order to adapt to different network bandwidth and processing capability of end user,a new approach based on shot description is proposed to extract substream of Scalable Video Coding(SVC).The shot description is acquired off-line,and then a binary tree for reference frame is set up.Substream extraction is implemented based on bitstream analysis and shot description.Experiments show that the proposed method can extract substream quickly and assure visual quality without loss of coding efficiency.

Key words: scalable video coding, shot description, binary tree, bitstream extraction