共查询到20条相似文献,搜索用时 828 毫秒
1.
A Video Coding Algorithm Based on Intraframe and Interframe Joint Prediction of Wavelet Coefficients
AVideoCodingAlgorithmBasedonIntraframeandInterframeJointPredictionofWaveletCoeficientsZhangXudongWangDeshengPengYingning(Tsin... 相似文献
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Wen H. Chen 《中国邮电高校学报(英文版)》1994,(2)
CompressedDigitalVideo:AcceleratingtheVideoCommunicationsRevolutionWenH.Chen(CompressionLabs,Inc.2860JunctionAveSanJose,CA951... 相似文献
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WU Meng 《中国邮电高校学报(英文版)》2000,7(3)
1 IntroductionThetemporalredundanciesbetweentheconsec utiveframesofvideostreamincludemainlythefol lowingseveraltypes:(1 ) Theshiftofthecorresponding pixelblocks;(2 ) Therotation ;(3) Theluminancedifference ;(4) Thecombinationoftheabove 3types.Althoughtheconventio… 相似文献
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Semantics in Image and Video Retrieval Systems 总被引:1,自引:0,他引:1
1 IntroductionWiththegrowthofmultimedia,thequantityofdigitaldocuments,especiallydigitalimagesandvideos,isalwayslarger.Imagesandvideosarebe inggeneratedatanever increasingratebysourcessuchassatellites,fingerprinting ,scientificexperi ments,biomedicalimaging… 相似文献
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1 IntroductionItisbecomingcommonsensethatefficientmethodshouldbedevelopedtodescribemultimediacontentfortremendousamountsofmultimediainfor mationthatcanbeeasilyaccessedneedsimmediateprocessing ,searchingandorganizing .ThisistheobjectiveoftheemergingMPEG 7… 相似文献
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A New Video Coding Method Based on Improving Detail Regions 总被引:3,自引:0,他引:3
1 IntroductionAstheinternationalstandardofvideocompres sion ,MPEGorH .2 63[1 ] iswidelyrealizedinvideoproductions.ThevideoorimagesequenceisdividedintoGroupofPictures (GOP)inMPEG[2~5] .ThefirstimageofGOPisalwaysInformation (I)frame.ThefollowingimagesmaybePrediction … 相似文献
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1IntroductionInBISDN,VBRvideotraficwilbeanimportanttypeoftrafic.ThetypeoftraficwilbecodedaccordingtoMPEGstandardmainly.Becau... 相似文献
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HierarchicalSearchMotionEstimationAlgorithmsforRealtimeVideoCodingZhangYongYuLuZhouFengYaoQingdong(ZhejiangUniversity,Hangzh... 相似文献
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《中国邮电高校学报(英文版)》2002,(2)
Torelatednationalinstitutes,associationsandacademies,provincialandmunicipalscienceandtechnolo gyassociations,andallconcerneduniversities,scientificresearchunits:WearedelightedtoannouncethatthesixthsessionoftheNationalAssociatedScienceSymposiumonComputer… 相似文献
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1 IntroductionItiswellknownthatinformationsystemsareessentialforcreatingcompetitivefirms,managingglobalcorporationsand providinguseful productsandservicestocustomers.Thesecomputermediatedtoolscanmakeorganizationsmorecompetitiveandefficientbycollecting ,… 相似文献
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QUANTUM MECHANICAL MODEL AND SIMULATION OF GaAs/AlGaAs QUANTUM WELL INFRARED PHOTODETECTOR—Ⅱ ELECTRICAL ASPECTS 总被引:3,自引:2,他引:1
IntroductdonInthefirstpart ,wehavediscussedtheopiticalaspectsaboutthequantumwellinfraredphotodetec tor .Herewecontinuediscussionsabouttheelectricalaspectesofthedevicemodelandsimulation .1 DarkCurrentandPhotocurrentDistributedeffectsofexternalbiasacrossth… 相似文献
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1 IntroductionTheAccessNetworkisaseriesoftransferenti tiesbetweenservicenodeinterfacesandtherespon dentusernetworkinterfaces,providingtransfer ring ,multiplexer,cross connectionandotherloadtelecommunicationservices[1 ] .AstheCommunica tionTechnologiesdevelop… 相似文献
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1 IntroductionRecently,intenseinteresthasbeenfocusedonmodulationtechniques,whichcan providebroad bandtransmissionoverwirelesschannelsforapplica tionsincludingwirelessmultimedia ,wirelessInter netaccess,andfuture generationmobilecommuni cationsystems .OFDM[1~… 相似文献
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1 IntroductionOpticalCodeDivisionMultipleAccess (OCD MA)communicationsystemshavebeenattractinganincreasinginterestrecently .Thisisduetothevastbandwidthintheopticallinksandtheextra highopticalsignalprocessingspeedwhenusingopti calcomponents.Mostresearchwor… 相似文献
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1 IntroductionTheexplosivegrowthofInternettraffichasim posedtremendousstressontoday srouters,howtoimplementhighspeed ,scalableandlargeprocessingcapabilitywhileprovidinggoodserviceshasbecomethekeyissuetodesignmodernrouterfacilities.La bel switchingtechnol… 相似文献
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Fu Y Willander M 《红外与毫米波学报》2002,21(5):321-326
IntroductionInfrareddetectortechniquehasbeenakeyfactorinthedevelopmentoftheinfraredtechnologyformorethan 4 0 years .Since 1970 ,semiconductorslikeInSbandHgCdTehavebeentheprincipalmaterialsforvariousinfrareddetectorapplications .Theformatoftheinfrareddetectormotivatedbysmartthermalimagingsystemchangedfromsingleelementdevicetofocalplanarrays(FPAs)inthemiddleof 80’s [1].Today’stechnologyofinfrareddetectorconcentrateslargelyonfocalplanarrays ,expeciallyforsensitive ,homogeneousandlargeformatscaledevices .HgCdTe... 相似文献
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WUGui-lin LIUQing 《电子显微学报》2002,21(5):705-706
IntroductionElectronback scatteredpattern (EBSP)analysisinthescanningelectronmicroscopeasatoolforinvestigatingmicrostructurehasbeenwellestablished .Thistechniquehasmanyadvantagesovertransmissionelectronmicroscopy .Adrawbackofthistechniqueistheangularreso… 相似文献
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1 IntroductionItisacomplexanddifficultjobtodesignthesoftwareofmoderncommunicationsystems.ThesoftwareofcommunicationsystemsiscomposedofExtendedFinitsStateMachine (EFSM )thatrunsinparallel.Thesestatemachinesareindependentofeachotherandcommunicatewithdiscr… 相似文献
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1 IntroductionMultiple AccessInterference (MAI)owingtomanysimultaneoususersconstitutesthemainlimita tionofDS CDMAsystems .MultiuserdetectiontechniquescanefficientlysuppressMAIandsub stantiallyincreasethecapacityofCDMAsystems.Variousmultiuserdetectionschem… 相似文献