基于S3C6410的双路视频无线传输系统
摘要
随着多媒体技术和网络传输技术的飞速发展,实时视频传输技术在工业监控、环境监测、安防监控等多个领域的应用日趋广泛。传统的有线视频传输系统在矿井、荒芜地区等环境下存在着布线困难等问题；对于临时需要进行视频传输的场合,不能灵活而快速地搭建有线视频传输系统。因此,有必要开发组网灵活的无线视频传输系统。
本文设计并实现了一套双路视频无线传输系统,它采用了H.264视频编解码技术,这在保证视频质量的前提下可有效减少网络带宽需求；采用了自组网的无线传输方式,可灵活搭建视频传输系统,并减少系统综合成本。
文章首先分析了无线视频传输系统的特点,在总结已有视频传输系统优缺点及国内外研究现状的基础上,根据无线视频传输系统的设计要求,设计了系统的总体框架。然后,针对H.264视频编解码实现较复杂的特点和无线视频传输系统的功能需求,采用基于S3C6410的硬件平台作为主控模块,选择USB摄像头作为视频采集模块,使用无线网卡作为无线传输模块,完成了系统节点的硬件设计。在完成了节点的底层软件设计后,针对采集节点、中继节点和接收节点的不同功能要求,开发了相应的应用层程序。通过上述软硬件的开发,实现了三种节点的各项功能,从而实现了双路视频经过无线自组网络进行传输的系统。通过实验验证表明系统能够很好地实现双路视频传输功能。
As the rapid development of the multimedia technology and network transmission technology, real-time video transmission is increasingly used in industrial monitoring, environment monitoring, security monitoring and other fields. In complex environments, such as mines and remote areas, there are issues such as wiring problems in the traditional wired video system. It is hard to build the wired video system flexibility and quickly in situations, which need to transmit video temporarily. Therefore, it is necessary to develop a flexible wireless video transmission system.
In this paper, a dual video wireless transmission system is designed and implemented. With H.264 video codec technology, it is effective to reduce the demand for network bandwidth in the premise of ensuring video quality. With Ad-Hoc networks, it can build a flexible video transmission system and reduce system integration costs.
Based on analyzing the characteristics of wireless video transmission system, summarizing the research status, advantages and disadvantages of current video transmission system and the design requirements of the wireless video transmission system, the general framework of the system is designed. With S3C6410 based hardware platform as the main control module, USB camera as video capture module and wireless network card as wireless transmission module, the hardware of system nodes is designed to meet the requirements of H.264 video codec and system functions. For the different functional requirements of acquisition nodes, repeater nodes and receiving nodes, the corresponding application layer program is developed after completing the design of bottom software. Through the above development of software and hardware, the various functions of three types of nodes are achieved, and the dual video wireless transmission system is also achieved. Verified by experiments, the system can excellently achieve the dual video transmission functions.
本文设计并实现了一套双路视频无线传输系统,它采用了H.264视频编解码技术,这在保证视频质量的前提下可有效减少网络带宽需求；采用了自组网的无线传输方式,可灵活搭建视频传输系统,并减少系统综合成本。
文章首先分析了无线视频传输系统的特点,在总结已有视频传输系统优缺点及国内外研究现状的基础上,根据无线视频传输系统的设计要求,设计了系统的总体框架。然后,针对H.264视频编解码实现较复杂的特点和无线视频传输系统的功能需求,采用基于S3C6410的硬件平台作为主控模块,选择USB摄像头作为视频采集模块,使用无线网卡作为无线传输模块,完成了系统节点的硬件设计。在完成了节点的底层软件设计后,针对采集节点、中继节点和接收节点的不同功能要求,开发了相应的应用层程序。通过上述软硬件的开发,实现了三种节点的各项功能,从而实现了双路视频经过无线自组网络进行传输的系统。通过实验验证表明系统能够很好地实现双路视频传输功能。
As the rapid development of the multimedia technology and network transmission technology, real-time video transmission is increasingly used in industrial monitoring, environment monitoring, security monitoring and other fields. In complex environments, such as mines and remote areas, there are issues such as wiring problems in the traditional wired video system. It is hard to build the wired video system flexibility and quickly in situations, which need to transmit video temporarily. Therefore, it is necessary to develop a flexible wireless video transmission system.
In this paper, a dual video wireless transmission system is designed and implemented. With H.264 video codec technology, it is effective to reduce the demand for network bandwidth in the premise of ensuring video quality. With Ad-Hoc networks, it can build a flexible video transmission system and reduce system integration costs.
Based on analyzing the characteristics of wireless video transmission system, summarizing the research status, advantages and disadvantages of current video transmission system and the design requirements of the wireless video transmission system, the general framework of the system is designed. With S3C6410 based hardware platform as the main control module, USB camera as video capture module and wireless network card as wireless transmission module, the hardware of system nodes is designed to meet the requirements of H.264 video codec and system functions. For the different functional requirements of acquisition nodes, repeater nodes and receiving nodes, the corresponding application layer program is developed after completing the design of bottom software. Through the above development of software and hardware, the various functions of three types of nodes are achieved, and the dual video wireless transmission system is also achieved. Verified by experiments, the system can excellently achieve the dual video transmission functions.
引文
[1]卢汉清,刘静.基于图学习的自动图像标注.计算机学报,2008,31(9)：1629-1639.
[2]熊永华,吴敏,贾维嘉.基于延时预测的TCP实时视频传输方法.中南大学学报(自然科学版),2010,41(4),1449-1456.
[3]刘峰.视频图像编码技术及国际标准.北京邮电大学出版社,2005.07.
[4]王尊亮,李学俊.分布式视频编码技术研究进展.计算机工程与设计,2010,31(3)：550-554.
[5]吕星哉,王振,朱近康.分布式无线通信系统中的主从协同功控.电路与系统学报,2010(15)：59-64.
[6]张存利,吴怡,黄鸿强.基于802.11网络的无线视频传输系统设计.现代电子技术,2010(4)：70-72.
[7]宋延昭.嵌入式操作系统介绍及选型原则.工业控制计算机,2005.04.
[8]李岩,荣盘祥.基于S3C44BOX嵌入式uCLinux系统原理及应用.清华大学出版社,2005.01.
[9]徐旦.基于DSP和PCI的视频采集卡设计[硕士学位论文].西安电子科技大学.2008,6-10.
[10]窦振中.基于单片机的嵌入式系统工程设计.中国电力出版社,2008.09.
[11]陈翔宇,江和.单片机与DSP结合的dsPIC芯片.单片机与嵌入式系统应用,2003(7)：46-48.
[12]吴文南.基于嵌入式系统的Ad Hoc节点的设计与实现[硕士学位论文].东南大学,2007,27-29.
[13]张鹏,杜建国,解晓东等.一种基于多核流水的多标准视频编解码器体系结构.计算机研究与发展,2008(45)：1985-1993.
[14]ARM11 MPCore Processor Technical Reference Manual Revision rlp0. ARM DDI 0360D. 2006.
[15]S3C6410 USER'S MANUAL REV 1.10. Samsung Electronics Co. Aug,2008.
[16]Andrew N. Sloss, Dominic Symes, Chris Wright. ARM System Developer's Guide, San Fransisco:Morgan Kaufmann Publishers,2004.
[17]杨刚.32位RISC嵌入式处理器及其应用.电子工业出版社,2007.01.
[18]S3C6400/6410 HW Multimedia Codec (MFC) User's Guide REV 3.20. Samsung Electronics Co. Aug,2008.
[19]王小静,杨高波,朱宁波.基于半脆弱水印的H.264/AVC视频流的内容级认证.通信学报,2009,30(11)：71-78.
[20]杨金,孙世新MIMO系统中的H.264/SVC数据流抽取和重组算法.计算机应用,2009,29(12)：3307-3309.
[21]王莉莉,黄晓革,张明.基于H.264的多参考帧快速运动估计算法.计算机应用,2009,29(5)：1362-1365.
[22]沈敏一,高新波.H.264视频编码系统中多参考帧的选择算法研究.电路与系统学报,2008(8)：50-54.
[23]王波,刘涤尘,李敏.一种基于H.264的混合视频转码方法.中国图象图形学报,2009,14(12)：2463-2469.
[24]吴晓军,白世军,卢文涛.基于H.264视频编码的运动估计算法优化.电子学报, 2009(11)：2541-2545.
[25]Chen Z. Xu J. He Y. Fast integer-pel and fractional-pel motion estimation for H.264/AVC. Journal of Visual Communication and Image Representation,2006, 17(2):264-290.
[26]韩振雷.CCD和CMOS图像传感器的异同剖析.影像技术,2009(4)：40-42.
[27]吴桂祥.应用于网络视频监控系统的嵌入式视频采集与GUI设计[硕士学位论文].浙江大学.2007,16-17.
[28]刘春成.基于嵌入式Linux的USB摄像头驱动开发.计算机工程与设计.2007,28(8)：1885-1887.
[29]唐雄燕,李建宇,张辉等.宽带无线接入技术及应用.电子工业出版社,2006.09.
[30]李浩,高泽华,高峰等IEEE802.11无线局域网标准研究.计算机应用研究.2009,26(5)：1616-1620.
[31]IEEE Standard for Wireless LAN MAN Medium Access Control(MAC) and Physical Layer (PHY) Specifications. IEEE Standard 802.11,1999.
[32]Wasan Pattara-Atikom, Prashant Krishnamurthy, Sujata Banerjee. Distributed mechanisms for qual ity of service in wireless LANs. IEEE Wireless Communications, 2003,10(3),26-34.
[33]Zou SH, Wu HT, Cheng SD. A simple and efficient broadcasting scheme for mobile Ad Hoc networks, Journal of Software,2005,16(6):1104-1111.
[34]马忠梅,祝烈煌,李善平等ARM & Linux嵌入式系统教程.北京航天航空大学出版社,2008.08.
[35]杨磊.基于嵌入式Linux视频采集平台的开发[硕士学位论文].武汉科技大学.2008,16-21.
[36]李善平,季江民,尹康凯等.边干边学——LINUX内核指导(第二版).浙江大学出版社,2008.09.
[37]常青.基于S3C2410和流媒体的音视频采集传输系统设计[硕士学位论文].太原理工大学.2008,28-42.
[38]孙天泽,袁文菊.嵌入式设计及Linux驱动开发指南.电子工业出版社,2009.10.
[39]田家林,陈利学,寇向辉LINUX嵌入式操作系统在ARM上的移植.微计算机信息,200723(11)：60-62.
[40]Bi11 Dirks, Hans Verkuil, Martin Rubli. Video for Linux Two API Specification Revision 0.24.2008-03.
[41]Zhidi Jiang, Weiyue Liu. An Efficient Implementation of Multiview Video Capture System. IEEE International Conference on Communication Technology Proceedings. 2008.11.
[42]刘学勇,陈建伟.精通Linux C编程.清华大学出版社,2009.07.
[43]Kurt Wall. GNU/Linux编程指南(第二版).清华大学出版社,2005.08.
[44]吴大鹏,武穆清,甄岩.移动自组织网络可用带宽估计方法研究进展.通信学报,2010(31)：103-115.
[45]Zhou Bosheng, Wu Jieyi, Fei Xiang, Zhao Jian. PCBA:A Priority-based Competitive Broadcasting Algorithm in Mobile Ad Hoc Networks. Computer Technol,2003.18 (5): 598-606.
[46]魏滢,白光伟.多跳Ad Hoc网络TCP拥塞控制改进方案.计算机工程与设计,2009,30(23)：5314-5336.
[47]Rao J, Biswas S. Transmission power control for 802.11:A carrier sense based NAV extension approach//GLOBECOM'05. Michigan:IEEE,2005:3439-3444.
[48]Farshid A S, Suresh S. Analytical Models for Single-Hop and Multi-Hop Ad Hoc Networks//Proceedings of the First International Conference on Broadband Networks (BROADNETS'04). IEEE Press,2004:412-417.
[49]程剑,洪佩琳,李津生.移动Ad Hoc网络中的TCP改进方案性能分析.计算机应用,2005,25(4)：1-5.
[50]徐宝宏,杨瑞娟,马晓岩等.基于群限制的Ad Hoc网络多跳分群算法.计算机工程.2008,34(17)：120-122.
[51]郑少仁,王海涛Ad Hoc网络技术.人民邮电出版社,2005.01.
[52]广东华天正科技有限公司Rea16410硬件设计文档.2010.05.
[53]广东华天正科技有限公司.Rea16410 Linux用户手册V1.2.2010.05.
[2]熊永华,吴敏,贾维嘉.基于延时预测的TCP实时视频传输方法.中南大学学报(自然科学版),2010,41(4),1449-1456.
[3]刘峰.视频图像编码技术及国际标准.北京邮电大学出版社,2005.07.
[4]王尊亮,李学俊.分布式视频编码技术研究进展.计算机工程与设计,2010,31(3)：550-554.
[5]吕星哉,王振,朱近康.分布式无线通信系统中的主从协同功控.电路与系统学报,2010(15)：59-64.
[6]张存利,吴怡,黄鸿强.基于802.11网络的无线视频传输系统设计.现代电子技术,2010(4)：70-72.
[7]宋延昭.嵌入式操作系统介绍及选型原则.工业控制计算机,2005.04.
[8]李岩,荣盘祥.基于S3C44BOX嵌入式uCLinux系统原理及应用.清华大学出版社,2005.01.
[9]徐旦.基于DSP和PCI的视频采集卡设计[硕士学位论文].西安电子科技大学.2008,6-10.
[10]窦振中.基于单片机的嵌入式系统工程设计.中国电力出版社,2008.09.
[11]陈翔宇,江和.单片机与DSP结合的dsPIC芯片.单片机与嵌入式系统应用,2003(7)：46-48.
[12]吴文南.基于嵌入式系统的Ad Hoc节点的设计与实现[硕士学位论文].东南大学,2007,27-29.
[13]张鹏,杜建国,解晓东等.一种基于多核流水的多标准视频编解码器体系结构.计算机研究与发展,2008(45)：1985-1993.
[14]ARM11 MPCore Processor Technical Reference Manual Revision rlp0. ARM DDI 0360D. 2006.
[15]S3C6410 USER'S MANUAL REV 1.10. Samsung Electronics Co. Aug,2008.
[16]Andrew N. Sloss, Dominic Symes, Chris Wright. ARM System Developer's Guide, San Fransisco:Morgan Kaufmann Publishers,2004.
[17]杨刚.32位RISC嵌入式处理器及其应用.电子工业出版社,2007.01.
[18]S3C6400/6410 HW Multimedia Codec (MFC) User's Guide REV 3.20. Samsung Electronics Co. Aug,2008.
[19]王小静,杨高波,朱宁波.基于半脆弱水印的H.264/AVC视频流的内容级认证.通信学报,2009,30(11)：71-78.
[20]杨金,孙世新MIMO系统中的H.264/SVC数据流抽取和重组算法.计算机应用,2009,29(12)：3307-3309.
[21]王莉莉,黄晓革,张明.基于H.264的多参考帧快速运动估计算法.计算机应用,2009,29(5)：1362-1365.
[22]沈敏一,高新波.H.264视频编码系统中多参考帧的选择算法研究.电路与系统学报,2008(8)：50-54.
[23]王波,刘涤尘,李敏.一种基于H.264的混合视频转码方法.中国图象图形学报,2009,14(12)：2463-2469.
[24]吴晓军,白世军,卢文涛.基于H.264视频编码的运动估计算法优化.电子学报, 2009(11)：2541-2545.
[25]Chen Z. Xu J. He Y. Fast integer-pel and fractional-pel motion estimation for H.264/AVC. Journal of Visual Communication and Image Representation,2006, 17(2):264-290.
[26]韩振雷.CCD和CMOS图像传感器的异同剖析.影像技术,2009(4)：40-42.
[27]吴桂祥.应用于网络视频监控系统的嵌入式视频采集与GUI设计[硕士学位论文].浙江大学.2007,16-17.
[28]刘春成.基于嵌入式Linux的USB摄像头驱动开发.计算机工程与设计.2007,28(8)：1885-1887.
[29]唐雄燕,李建宇,张辉等.宽带无线接入技术及应用.电子工业出版社,2006.09.
[30]李浩,高泽华,高峰等IEEE802.11无线局域网标准研究.计算机应用研究.2009,26(5)：1616-1620.
[31]IEEE Standard for Wireless LAN MAN Medium Access Control(MAC) and Physical Layer (PHY) Specifications. IEEE Standard 802.11,1999.
[32]Wasan Pattara-Atikom, Prashant Krishnamurthy, Sujata Banerjee. Distributed mechanisms for qual ity of service in wireless LANs. IEEE Wireless Communications, 2003,10(3),26-34.
[33]Zou SH, Wu HT, Cheng SD. A simple and efficient broadcasting scheme for mobile Ad Hoc networks, Journal of Software,2005,16(6):1104-1111.
[34]马忠梅,祝烈煌,李善平等ARM & Linux嵌入式系统教程.北京航天航空大学出版社,2008.08.
[35]杨磊.基于嵌入式Linux视频采集平台的开发[硕士学位论文].武汉科技大学.2008,16-21.
[36]李善平,季江民,尹康凯等.边干边学——LINUX内核指导(第二版).浙江大学出版社,2008.09.
[37]常青.基于S3C2410和流媒体的音视频采集传输系统设计[硕士学位论文].太原理工大学.2008,28-42.
[38]孙天泽,袁文菊.嵌入式设计及Linux驱动开发指南.电子工业出版社,2009.10.
[39]田家林,陈利学,寇向辉LINUX嵌入式操作系统在ARM上的移植.微计算机信息,200723(11)：60-62.
[40]Bi11 Dirks, Hans Verkuil, Martin Rubli. Video for Linux Two API Specification Revision 0.24.2008-03.
[41]Zhidi Jiang, Weiyue Liu. An Efficient Implementation of Multiview Video Capture System. IEEE International Conference on Communication Technology Proceedings. 2008.11.
[42]刘学勇,陈建伟.精通Linux C编程.清华大学出版社,2009.07.
[43]Kurt Wall. GNU/Linux编程指南(第二版).清华大学出版社,2005.08.
[44]吴大鹏,武穆清,甄岩.移动自组织网络可用带宽估计方法研究进展.通信学报,2010(31)：103-115.
[45]Zhou Bosheng, Wu Jieyi, Fei Xiang, Zhao Jian. PCBA:A Priority-based Competitive Broadcasting Algorithm in Mobile Ad Hoc Networks. Computer Technol,2003.18 (5): 598-606.
[46]魏滢,白光伟.多跳Ad Hoc网络TCP拥塞控制改进方案.计算机工程与设计,2009,30(23)：5314-5336.
[47]Rao J, Biswas S. Transmission power control for 802.11:A carrier sense based NAV extension approach//GLOBECOM'05. Michigan:IEEE,2005:3439-3444.
[48]Farshid A S, Suresh S. Analytical Models for Single-Hop and Multi-Hop Ad Hoc Networks//Proceedings of the First International Conference on Broadband Networks (BROADNETS'04). IEEE Press,2004:412-417.
[49]程剑,洪佩琳,李津生.移动Ad Hoc网络中的TCP改进方案性能分析.计算机应用,2005,25(4)：1-5.
[50]徐宝宏,杨瑞娟,马晓岩等.基于群限制的Ad Hoc网络多跳分群算法.计算机工程.2008,34(17)：120-122.
[51]郑少仁,王海涛Ad Hoc网络技术.人民邮电出版社,2005.01.
[52]广东华天正科技有限公司Rea16410硬件设计文档.2010.05.
[53]广东华天正科技有限公司.Rea16410 Linux用户手册V1.2.2010.05.