• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2011, Vol. 33 ›› Issue (1): 122-126.doi: embedded system;video monitori

• 论文 • 上一篇    下一篇

视频采集与编码技术在视频监控终端中的应用

赵满意1,赵利1,莫金旺2,李和1,刘涛1   

  1. (1.桂林电子科技大学信息与通信学院,广西 桂林 541004;
    2.桂林电子科技大学信息科技学院,广西 桂林 541004)
  • 收稿日期:2009-11-28 修回日期:2010-03-01 出版日期:2011-01-25 发布日期:2011-01-25
  • 通讯作者: 赵满意 E-mail:Zhao43956670@163.com
  • 作者简介:赵满意(1981),男,河南商丘人,硕士生,研究方向为嵌入式软件。赵利(1965),男,山西长治人,博士,教授,研究方向为移动通信与个人通信。莫金旺(1961),男,广西桂林人,副教授,研究方向为无线通信。李和(1973),男,湖南浏阳人,硕士,讲师,研究方向为移动通信与个人通信。刘涛(1983),男,湖南祁阳人,硕士,研究方向为通信工程。
  • 基金资助:

    2009年广西区研究生科研创新项目(2009105950810M14);广西教育厅科研基金(200808XL128,200911XL105)

Application of the Video Capture and Coding Technology in Video Monitoring Terminals

ZHAO Manyi1,ZHAO Li1,MO Jinwang2,LI He1,LIU Tao1   

  1. (1.School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004;
    2.School of Information Science and Technology,Guilin University of Electronic Technology,Guilin 541004,China)
  • Received:2009-11-28 Revised:2010-03-01 Online:2011-01-25 Published:2011-01-25

摘要:

考虑到开发的难易程度、生产成本和软件升级等因素,本文介绍了一种基于ARM处理器和嵌入式Linux操作系统的无线视频监控终端的设计和实现方法;分析了在嵌入式Linux操作系统下基于V4L的视频采集的新思路与基于MPEG4的视频编码的优点,阐述了整个终端系统开发的难点及相应的解决方案;给出了无线监控终端的实现方案、视频采集模块的设计方法、XVID编码器的编码过程和MPEG4视频编码标准在ARM平台上的优化方案。系统在ARMLinux平台上进行了实际的视频采集及编码性能测试。测试结果表明,基于V4L的视频采集和基于XVID的MPEG4编码的无线监控终端视频采集实时性好,压缩效率高,码流平稳,完全能满足用户的监控需求。

关键词: 嵌入式系统, 视频监控, 视频采集, 视频编码

Abstract:

Considering the degree of realization,cost of manufacturing and upgrading,this paper introduces the design and implementation of wireless video monitoring terminals based on ARM and embedded Linux systems. The new idea of video capture based on V4L and the merits of video coding based on MPEG4 in the Linux systems are analysed.We described the difficulty of the whole system development and the corresponding solutions. Also, the implementation of wireless video monitoring terminals, the design of video capture, the encoding process of the XVID encoder and the optimization schemes of the MPEG4 video coding standard on the ARM platform are all given in this paper. After the actual video capture and encoding performance test based on the AMRLinux, the results show that the wireless monitoring terminals based on V4L and MPEG4 do well in realtime video capturing ,high compression efficiency and steady streams,and are fully able to meet the user’s needs on video monitoring.

Key words: embedded system;video monitoring;video capture;video coding