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论文题目:基于Android平台的视频监控系统的设计研究专业:通信与信息系统硕士生:郭永清(签名)__________指导教师:孙弋(签名)__________摘要随着流媒体技术、无线网络技术以及视频压缩技术的不断进步,视频监控系统的应用日益广泛和深入,监控的规模和范围也不断扩大。基于嵌入式移动终端设备和无线网络的远程视频监控已经成为监控研究领域的热点。本文通过对视频监控系统现状及发展趋势的分析,结合理论技术的发展及监控系统性能的需求,提出了一种基于Android平台的视频监控系统设计方案,实现了监控系统的视频采集、视频压缩编码、视频网络传输及实时显示功能。整个系统开发的软件平台选用基于Linux内核的开源手机操作系统Android,鉴于其良好的可开发性和移植性,该系统已经开始向工业级进军;硬件平台采用具有硬件加速功能且支持H.264视频编解码的高性能S3C6410处理器。本论文介绍了监控系统所涉及关键技术的理论知识,在此基础上提出了基于Android平台的视频监控系统的总体设计方案,完成了监控系统各模块的设计和软件实现。该系统由视频采集端(摄像头)、视频服务器以及监控客户端构成,主要模块包括:视频数据采集模块、视频编码模块、视频实时传输模块、客户端显示模块。本监控系统的视频编码模块采用了最新的低码率视频压缩标准H.264,将H.264算法在集成芯片DSP上实现,不仅减小了信道传输容量而且提高了图像质量和编码性能,达到了系统实时性、可靠性的要求;视频实时传输模块采用流媒体技术以及Socket网络编程,实现了基于RTP协议的端到端的传输功能;客户端显示模块采用VLC多媒体播放器,实现了视频的实时显示播放。最后通过对本文进行总结,提出了后续的开发方案和计划。关键词:视频监控;Android;H.264算法;RTP传输协议研究类型:应用研究Subject:DesignandReasearchofVideoMontioringSystemBasedonAndroidSpecialty:CommunicationandInformationSystemName:GuoYongqing(Signature)Instructor:SunYi(Signature)ABSTRACTWiththerapiddevelopmentofstreamingmediatechnology,wirelesscommunicationtechnologyandvideocompressiontechnology,thevideomonitoringsystemisappliedmorewidelyanddeeply,thescaleandcopeofthemonitorisexpanding.Remotevideosurveillancebasedonembeddedmobileterminaldevicesandwirelessnetworkhasbecomeahotfieldofresearch.Thisarticlethroughthepresentsituationandthedevelopmentanalysisofthevideomonitoringsystem,combinedwiththedevelopmentofthetheoryandtechnology,andtherequirementsperformanceofthevideomonitoringsystem,putforwardonekindofdesignschemebasedontheAndroidvideomonitoringsystem.Realizedthevideocapture,videocompression,videonetworktransmissionandthereal-timedisplayfunctionofthemonitoringsystem.TheselectionsoftwareplatformofthewholesystembasedontheopeningphoneoperatingsystemAndroidwiththeLinuxkernel,thesystemhasbeguntoentertheindustriallevelbecauseofthegooddevelopmentandportability,thehardwareplatformbasedonS3C6410processorofhighperformancewhichhasthehardwareaccelerationfunctionandH.264videodecoder.Thispaperintroducedthekeytechniquetheoryknowledgeofthemonitoringsystem,raisedthedesignschemeofthevideomonitoringsystembasedontheAndroidplatform,completedthemoduledesignandtheimplementationofthesoftware.Thesystemconsistsofthevideocollectionterminal(camera),videoserverandclient.,themainmoduleincludethevideogathermodule,thevideocodingmodule,thereal-timetransportingmodule,theclientdisplaymodule.ThemonitoringsystemusesthenewlowbitratevideocompressionstandardH.264,whichintegratedinDSPnotonlyreducesthetransmissioncapacitybutalsoimprovetheimagequalityandcodingefficiency,achievethereal-time,reliabilityrequirementsofthemonitoringsystem,inthereal-timetransportingmodule,SocketprogramandrealizationofRTPprotocolarefullydiscussed,intherealtimevideodisplaymoduleusestheVLCmultimediaplayer.Inthelast,itsummarizesandcomesupwiththesubsequentdevelopmentprogramsandplans.Keywords:Videomonitoring;Android;H.264algorithm;TheRTPtransportprotocolThesis:ApplicationResearch目录I目录1绪论.......................................................................................................11.1选题的背景及意义..............................................................................11.2监控系统现状及发展趋势...................................................................11.2.1监控系统现状...........................................................................11.2.2监控系统发展趋势....................................................................21.3本论文所做的工作及文章结构安排.....................................................32视频监控系统的相关技术......................................................................52.1Android平台.......................................................................................52.1.1Android系统简介......................................................................52.1.2Android的优点.........................................................................52.1.3Android系统结构......................................................................62.2H.264标准简介...................................................................................82.2.1H.264编码标准基本概念..........................................................82.2.2H.264标准的优点.....................................................................92.3H.264标准结构...................................................................................92.3.1H.264档次和级别.....................................................................92.3.2H.264标准分层结构...............................................................102.4H.264标准关键模块.........................................................................112.4.1帧内预测................................................................................112.4.2帧间预测................................................................................122.4.3变换与量化............................................................................132.4.4熵编码....................................................................................142.5网络传输协议...................................................................................152.5.1网络传输协议标准..........................................
本文标题:基于Android平台的视频监控系统的设计研究
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