基于h.263視頻編解碼誤差恢復技術的研究

1、中國科學技術大學碩士學位論文基于H.263視頻編解碼誤差恢復技術的研究姓名：李偉申請學位級別：碩士專業(yè)：計算機科學與技術計算機應用技術指導教師：凃國防20030901基于王王263褪顫編瓣鶼器羞禳復裝零辨鹺究攘耍ErrorRecoveryBasedon袋263VideoEncodeandDecodeLi粥DirectedbyGuofmlgTuAbstractThecombinationanddevelopmentofmultimedia

2、technologiesanddigitalco捌nunicationtechnologieshavepromotedthedevelopmentofmultimediaeommunicationservicesgreatlyCommunicationtechnologieshavedevelopedrapidlyinrecentyearsmostlyininternet，mobiIecommunicationandmultimedia

3、servicesTheinterestinvideodetivoryovermobilenetworksandinternetisgrowingrapidly。OneinherentprobtemofvideotransmissionischannelerrorsTheeffectoftheseerrorsnotonlYCancausegreatdegradationofthequalityofvideoservice，butalsoc

4、anleadtothefatlureofthewholevideocommunicationsystem，becauseofthemotioncompensation—basedvideocoding。Soerrorresiliencetechnologieshavealreadybecomeanimportantpartofvideocodingovererror—pronechannelsinordertoimprovethequa

5、lityofthevideotransmissionInthepaper，weresearchandimplementanerrorrestltentmethodfor臻263videotransmittedonerrorpronechannel。InourencoderweapplydatapartitiontechnologyandreversiblevariableIengthcoding(RVLC)，moreoverweimpl

6、ementanautetransmissionalgorithminordertoreducetheerrorpropagationInourdecoder，weresearchandimplementanerrorresiltentH。263videodecodebasederrorcheckandconcealmentalgorithm。Thisalgorithmcanrecoveryvideoerrorbyusingspatial

7、andtemporalinterpolationTheexperimentpatterns，whichweused，areprovidedbyIT爭T猁一10。Thestudyindicatesthatthiserrorresillentmethodcanbetterimprovethequalityofthevideetransmittedoilerrorchannel豫ismethodcanbeappliedinvideocomun