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ID:33109329
大小:10.09 MB
页数:78页
时间:2019-02-20
《基于h.264的网络视频监控系统设计与其算法分析-(5612)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、DESIGNANDALGOIul]m订ANA【YSIS0FNETWoRKVmEoSURVEILLANCESYSTEMBASEDoNH.264ANDALGoRITHMANALYSISOFNETWORKVIDEoSURVEILLANCESYSTEMBASEDONH.264ABSTRACTVideosurveillanceisanimportantapproachinthefieldofsecurity.Currently,videocableisusedinmostvideosurveillancesystemsforvideotransmissionthroug
2、hwhichthesystemsareabletomeettheneedsofcentralizedsurveillanceinacertainarea,butitcan’tbeusedforremotesurveillance.Thepaperconductsrelevantresearchanddesignconcemingthesoflfwal'eandhardwarerealizationofthevideosurveillancesystemsbasedonsuchbackground.Basedontheanalysisofsystemrequir
3、ements,DM365isselectedastheprocessorofIPcamera.TheprocessorintegratesbothDSPcoreandARM9COre.DSPcoreisusedforthevideodatacompression,andARM9COreistransplantedintotheLinuxsystemtoCalTyoutthevideonetworktransmissionprogramdevelopment.Combiningtheirrespectiveadvantagesofeachcore,DM365ca
4、nmeettherequirementsofnetworkvideosurveillancesystem.Thehardwaresystemincludespowermodule,videocapturemoduleandvideoprocessingmodule.PowermoduleusesPoEandpoweradapterasthepowerinputtorealizeDC/DCandLDOconversionwhichproducemultiplepowersupplyfortheothermodules.Designofvideocapturemo
5、duleisbasedonCMOSimagesensor.Inthispart,thispaperconductsresearchonsensor’Sworkingprinciples,designstheData—Buslevelconversioncircuitand12Ccontrolbuscircuit.ThevideocapturemoduleCanoutputthevideodataandtheprocesserCanusethe12CtofinishtheConfigurationofCMOSimagessensoEThevideoprocess
6、ingmoduleiscomposedofmultipleperipheralexpansioncircuitdesignswhichincludestheFLASH,RAM,USB,RS485,Networkinterfaceandotherserialportcircuit.ThesoftwarepartmainlydevelopstheprogrammingforARM9kernelwhichcontainstheH.264encoder,Linuxtransplant,andAPPdevelopmentunderLinux.Firstly,thispa
7、perintroducestheH.264standard,andtakesin-depthanalysisonthekeytechnologiesinH.264encodingprocess,andthepaperconfigurestheT264encodinglibraryandcompilestheexecutablefile.AbouttheLinuxtransplant,thispapermainlyintroducestheU—bootconfigurationandtransplant,Driverloading,filesystemandke
8、rnelimagemaking.The
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