MPEG-4數(shù)字視頻錯(cuò)誤隱藏技術(shù)的研究.pdf

1、天津大學(xué)碩士學(xué)位論文MPEG一4數(shù)字視頻錯(cuò)誤隱藏技術(shù)的研究StudyingofErrorConeealmengTechniquesforNPEG4DigitalVideo(申請碩士學(xué)位)專業(yè)：研究生：指導(dǎo)教師：信號(hào)與信息處理工堂文侯正痿教授天津大學(xué)電子信息工程學(xué)院21105年2月AbstractWiththedevelopingofvideocompressionandencodingtechnology，aseriesofintern

2、ationalvideocompressionstandardscomeononeaftertheother，andthevideomultimediadataarewidelyusedinmanyfieldsEspeciallyaftertheissueofMPEG一4standardthatmakesfeaturesofefficiency，scalability，interactionandrobustness，digitalvi

3、deohasbeenextendedapplicationareasfromimagestorageanddigitalTVtonetworksandwirelesschannelsCongestion，packetloseandtransmissionerroraretheinherentproblemsinvolvedintheintemetandwirelessmobilevideocommunicationsystemnlete

4、chniquesoferrorcontrolandconcealmentisnecessarytothisvideoencodinganddecodingapplicationsPostprocessingtechniquescanbeappliedinanycircumstances，anddon’tdependonextraencodinginformation，sotheerrorconcealmentbypostprocessi

5、ngisdifficultandimportanttoanyapplicationsAsbeginningofthedissertationstudfingerrorconcealmentofMPEG4video，therecentnationalandinternationalachievementsoferrorprocessingaboutMPEG一4digitalvideoaresummarizedNext，Basedonthe

6、analysisofMPEG4imageerrorssomemodifiedmethodsforenordetection，whichcarlfindmostoftheerroB，arebroughtforwardThirdlytherecentalgorithmsofspatialandtemporalerrorconcealment0ntexturedataareinhoducedandsummarized，andanewalgor

7、ithmoftemporalerrorconcealmentconcerningInter4vcodingmodeispresented，bywhichthemotionvectorsandcodingmodecanberebuiltnlcalgorithmcanachievenicequalityofrecoveredimageandwellsuiteforrealtimevideodecodingapplicationsInthea

8、daptiveerrorconcealmentmethod，theneighboringinformationisusedtochooseautomaticallyaproperalgorithmofspatialortemporalerrorconcealmentwhichwillreconstructlostdatathequalityofrebuiltimagecanbeimprovedgreatlyFourthly，somere