计算机应用 ›› 2013, Vol. 33 ›› Issue (06): 1706-1710.DOI: 10.3724/SP.J.1087.2013.01706

• 多媒体技术 • 上一篇    下一篇

基于区域划分的深度视频快速编码算法

田涛,彭宗举   

  1. 宁波大学 信息科学与工程学院, 浙江 宁波 315211
  • 收稿日期:2012-12-05 修回日期:2013-01-21 出版日期:2013-06-01 发布日期:2013-06-05
  • 通讯作者: 彭宗举
  • 作者简介:田涛(1988-),男,安徽太和人,硕士研究生,主要研究方向:深度视频编码;彭宗举(1973-),男,四川南部人,副教授,博士,主要研究方向:三维视频信号的处理和编码。
  • 基金资助:

    国家自然科学基金资助项目(61171163);宁波市自然科学基金资助项目(2012A610041);新一代移动互联网用户端软件科技创新团队资助项目(2010R50009)

Fast depth video coding algorithm based on region division

TIAN Tao,PENG Zongju   

  1. Faculty of Information Science and Engineering, Ningbo University, Ningbo Zhejiang 315211, China
  • Received:2012-12-05 Revised:2013-01-21 Online:2013-06-05 Published:2013-06-01
  • Contact: PENG Zongju

摘要: 多视点彩色视频与深度视频作为多媒体系统中主流3D场景表示方式,吸引了越来越多人的关注。深度视频反映场景的几何信息,如何对其进行快速编码尤为重要。提出了一种基于区域划分的深度视频快速编码算法。首先,根据深度视频的边缘和运动属性把深度视频分为四个区域;然后,深入分析不同区域内宏块模式分布比例以及参考帧选择特性,设计了不同的宏块模式选择和参考帧搜索策略来提高编码速度;最后,测试提出算法的编码时间、码率以及合成虚拟视点的质量。实验结果表明,提出算法在保证虚拟视点图像质量和编码码率基本不变的情况下,节约了85.73%~91.06%的编码时间。

关键词: 三维, 深度视频, 视频编码, 区域划分, 快速编码算法

Abstract: As the main scheme of 3D scene representation, multiview video plus depth attracts more and more attention. Depth video reflects the geometric information of the scene. It is important to design fast depth video encoding algorithm. A fast depth video coding algorithm based on region division was proposed. Firstly, the depth video was divided into four regions according to the features of edge and motion. Then, macroblock distribution proportion and multi-reference frame selection feature of different regions were analyzed. Consequently, different macroblock mode decision and reference frame selection methods were utilized to speedup depth video encoding. Finally, some experiments were conducted to estimate the proposed algorithm in terms of encoding time, bit rate and virtual view quality. Experimental results show that the proposed algorithm saves encoding time ranging from 85.73% to 91.06% while it maintains virtual view quality and bit rate.

Key words: 3D, depth video, video coding, region division, fast encoding algorithm

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