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1.
AVideoCodingAlgorithmBasedonIntraframeandInterframeJointPredictionofWaveletCoeficientsZhangXudongWangDeshengPengYingning(Tsin...  相似文献   

2.
CompressedDigitalVideo:AcceleratingtheVideoCommunicationsRevolutionWenH.Chen(CompressionLabs,Inc.2860JunctionAveSanJose,CA951...  相似文献   

3.
1 IntroductionThetemporalredundanciesbetweentheconsec utiveframesofvideostreamincludemainlythefol lowingseveraltypes:(1 ) Theshiftofthecorresponding pixelblocks;(2 ) Therotation ;(3) Theluminancedifference ;(4) Thecombinationoftheabove 3types.Althoughtheconventio…  相似文献   

4.
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   

5.
1 IntroductionItisbecomingcommonsensethatefficientmethodshouldbedevelopedtodescribemultimediacontentfortremendousamountsofmultimediainfor mationthatcanbeeasilyaccessedneedsimmediateprocessing ,searchingandorganizing .ThisistheobjectiveoftheemergingMPEG 7…  相似文献   

6.
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   

7.
1IntroductionInBISDN,VBRvideotraficwilbeanimportanttypeoftrafic.ThetypeoftraficwilbecodedaccordingtoMPEGstandardmainly.Becau...  相似文献   

8.
ZhangYong  YuLu 《通信学报》1998,19(5):63-68
HierarchicalSearchMotionEstimationAlgorithmsforRealtimeVideoCodingZhangYongYuLuZhouFengYaoQingdong(ZhejiangUniversity,Hangzh...  相似文献   

9.
Torelatednationalinstitutes,associationsandacademies,provincialandmunicipalscienceandtechnolo gyassociations,andallconcerneduniversities,scientificresearchunits:WearedelightedtoannouncethatthesixthsessionoftheNationalAssociatedScienceSymposiumonComputer…  相似文献   

10.
1 IntroductionItiswellknownthatinformationsystemsareessentialforcreatingcompetitivefirms,managingglobalcorporationsand providinguseful productsandservicestocustomers.Thesecomputermediatedtoolscanmakeorganizationsmorecompetitiveandefficientbycollecting ,…  相似文献   

11.
IntroductdonInthefirstpart ,wehavediscussedtheopiticalaspectsaboutthequantumwellinfraredphotodetec tor .Herewecontinuediscussionsabouttheelectricalaspectesofthedevicemodelandsimulation .1 DarkCurrentandPhotocurrentDistributedeffectsofexternalbiasacrossth…  相似文献   

12.
IntroductionInordertoinvestigatetheeffectofgrainorientationoncold rolledpolycrystals ,itisofgreatinteresttostudythemicrostructureandlocalslippatternofrolledsinglecrystalsforcharacterizationofthestrainstate .Traditionallyresearcherscanobtainabundantinfo…  相似文献   

13.
1 IntroductionTheAccessNetworkisaseriesoftransferenti tiesbetweenservicenodeinterfacesandtherespon dentusernetworkinterfaces,providingtransfer ring ,multiplexer,cross connectionandotherloadtelecommunicationservices[1 ] .AstheCommunica tionTechnologiesdevelop…  相似文献   

14.
1 IntroductionRecently,intenseinteresthasbeenfocusedonmodulationtechniques,whichcan providebroad bandtransmissionoverwirelesschannelsforapplica tionsincludingwirelessmultimedia ,wirelessInter netaccess,andfuture generationmobilecommuni cationsystems .OFDM[1~…  相似文献   

15.
1 IntroductionOpticalCodeDivisionMultipleAccess (OCD MA)communicationsystemshavebeenattractinganincreasinginterestrecently .Thisisduetothevastbandwidthintheopticallinksandtheextra highopticalsignalprocessingspeedwhenusingopti calcomponents.Mostresearchwor…  相似文献   

16.
1 IntroductionTheexplosivegrowthofInternettraffichasim posedtremendousstressontoday srouters,howtoimplementhighspeed ,scalableandlargeprocessingcapabilitywhileprovidinggoodserviceshasbecomethekeyissuetodesignmodernrouterfacilities.La bel switchingtechnol…  相似文献   

17.
IntroductionInfrareddetectortechniquehasbeenakeyfactorinthedevelopmentoftheinfraredtechnologyformorethan 4 0 years .Since 1970 ,semiconductorslikeInSbandHgCdTehavebeentheprincipalmaterialsforvariousinfrareddetectorapplications .Theformatoftheinfrareddetectormotivatedbysmartthermalimagingsystemchangedfromsingleelementdevicetofocalplanarrays(FPAs)inthemiddleof 80’s [1].Today’stechnologyofinfrareddetectorconcentrateslargelyonfocalplanarrays ,expeciallyforsensitive ,homogeneousandlargeformatscaledevices .HgCdTe...  相似文献   

18.
IntroductionElectronback scatteredpattern (EBSP)analysisinthescanningelectronmicroscopeasatoolforinvestigatingmicrostructurehasbeenwellestablished .Thistechniquehasmanyadvantagesovertransmissionelectronmicroscopy .Adrawbackofthistechniqueistheangularreso…  相似文献   

19.
1 IntroductionItisacomplexanddifficultjobtodesignthesoftwareofmoderncommunicationsystems.ThesoftwareofcommunicationsystemsiscomposedofExtendedFinitsStateMachine (EFSM )thatrunsinparallel.Thesestatemachinesareindependentofeachotherandcommunicatewithdiscr…  相似文献   

20.
1 IntroductionMultiple AccessInterference (MAI)owingtomanysimultaneoususersconstitutesthemainlimita tionofDS CDMAsystems .MultiuserdetectiontechniquescanefficientlysuppressMAIandsub stantiallyincreasethecapacityofCDMAsystems.Variousmultiuserdetectionschem…  相似文献   

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