基于移动检测的视频码流控制与QOS的研究与实现

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1、北京交通大学硕士学位论文基于移动检测的视频码流控制与QoS的研究与实现姓名：刘亚楠申请学位级别：硕士专业：交通信息工程及控制指导教师：张宁20061201ABSTRACI'ABsl’RAI?r．VideoSurveillanceSystemasanimportantsafesurveillanceintrafficandpoliceiswidelyusedinsecurityandotherfieldsforitsfullandaccurateinformation．Withthefastdevelopmen

2、tofintemet,videosurveillancenetworkhasbecomeoneofthemostpopularresearches．ButthehlIgevideodataandlimitednetworkbandwidtharealwayschokepoint．Forthesequestions，therearelotsofresearchinterminalofvideosurveillancesystemandvideonetworktransmmition．ncparticularit

3、yofrailwaytransportisasfollowing．1ndistance．thedistancebetweenuserandvideopointislong．Andtherearemanydepartmentsofrailwayneedingthevideodata．Sothevideodatashouldbetransmittedinmulti-channel．Therefore，thevideosurveillancesystemshouldtransmitmulti-channelandr

4、emotevideo．ingeneral，thecommunicationnetworkofrailwaycouldprovidea2Mbandwidthtoconnectthecenterandlocal．Becausethevideodataishuge．thereiscontradictionbetweenthedataandbandwidth．Inthispaper,weanalysetheneedofvidoonrailway．Whenthereisnotrainintherailway,thetr

5、ansmmitionofhighqualityvideoisawasteoflimitedbandwidth．But．allchannelsofvideoshouldbeseenbyusers．Weresearchhowtomeettherequirementofusersandmakefulluseofbandwidthaccordingtothecharacteristicsofmilway．Inthepaper,weadoptthreeadvancedtechniques，includingvideoa

6、nalysetechnique、videocodingtechniqueandnetworktransmittiontenique．Weresearchthemindetail，bringforwardabandwidth—allocationarithmeticbasedonmotiondetectiontechniqueandvideopriority．Wedoexperimentsaccordingtothearithmetic．andtheresultsshowthatthearithmeticcou

7、ldmaketheusersto“Seewell”and“辩eaIl”．T1latmeansthattheuserscouldgetgoodvideoqualityofimportantdata,andcouldgetallinformationsatthesametime．TMSmethodsolvesthecontradictionbetweenthelimitedbandwidthandtherequirementoftheusers．KEYWoRDS：VideoSurveillanceQoSH．264

8、MotionDetectionCodingRateControlBandwidthAdjustCLASSNo：TP393．O致谢本论文的工作是在我的导师张宁教授的悉心指导下完成的，张宁老师严谨的治学态度和科学的工作方法给了我极大的帮助和影响，是我终身受益。张宁老师平时对我提出的商标准和严要求，使我以严谨而认真的科研态度从事研究工作；同时张宁老师的敬业精神也是我学习的榜样。在此衷心感谢三年来张宁老师对