基于h.264標(biāo)準(zhǔn)的視頻編解碼器的實(shí)現(xiàn)、性能研究與優(yōu)化

1、中國(guó)科學(xué)技術(shù)大學(xué)碩士學(xué)位論文可819950基于H264標(biāo)準(zhǔn)的視頻編解碼器的實(shí)現(xiàn)、性能研究與優(yōu)化Realization，PerformanceResearchandOptimizationofVideoCodecBasedonH264姓名：孫同倫學(xué)號(hào)：SA02006032導(dǎo)師：尹東副教授專業(yè)：信號(hào)與信息處理中國(guó)科學(xué)技術(shù)大學(xué)電子工程與信息科學(xué)系2005年5月中國(guó)科學(xué)技術(shù)大學(xué)碩士學(xué)位論文AbstractWiththecomingofITera

2、，peopleputforwardhigherdemandofthemultimediaserviceunderpresentconditionofcommunicationnetworkForexamplethehigherqualityvideophoneandvideoconferencevideostoreanddisplaywimhigherresolutionvideocommunicationinwirelessnetwo

3、rk，etcButakeytechnologyina11theseapplieationsisvideocodinganddecodingThedevelopmentofvideocommunicationisstronglysupposedbytheadvancesintheresearchonvideocompressionalgorithmsandreleaseofcodingstandardsH264istheemergingv

4、ideocodingstandardofITUTandISO／IECComparedwithpriorstandards，H，264hasbettercompressionperformance，morefunctionsandmoreagilityEspeciallyH264canprovideequivalentobjectivequalityatadatarateabout50％10werthallthatrequiredbyH2

5、63(BaselinelandMPEG4(SP)HoweverthealgorithmeomplexityofH。264dramaticallyincreasesduetotIleadoptionofanumberofvideocodingtoolsHowtocutdownthecomplexityofH264andmakeitbeapracticalstandardinrealcommunicationhasbeenapopulari

6、ssueThisPaDerfindsoutthemajorpartsthatleadto廿1ehighcomputationbasedonstudyingthestandarddocuments，performance，andtIlecomputationcomplexityofH264proposesafastintra—predictionmodeselectionmethodbasedorllocaledgeinforlilati

7、onandafastinterpredictionmodeselectionbasedonsplitproceduresExperimentalresultshavedemonstratedthatthenewmetlodcallachieveareductionof50％～70％encodingtimeonaverage，withanegligibleaveragePSNRIOSSandamerebitrateincreasecomp

8、aredwiththeoriginalH264referencesoftwareInaddition，thepartsthatfittooptimizebyMM)(，SSEinstructionsetarefoundoutandrealized，thestructureofH264referencesoftwareisadjustedSothecomplexityofH264encodingisreducedobviouslyChapt

9、erTwodiscussestheneedandthepossibilityofvideocoding，videocodingtools，avideocodecmodel，andmainfeaturesofpriorstandardsChapterThreefirstlyshowsthemodelofH264videocodecprovidesadetailedanalysisoftheindividuaIcodinggainsprov

10、idedbyseveralkeyfeaturesofthestandardandillustratestheimprovedcodingefficiencyenabledbyH264relativetopriorstandardsThenthebottleneckaffectingthespeedispointedoutbasedontheallalysisofthearchiteetureofH264codecChapterFourp

11、roposesafastintrapredictionmodeselectionmethodbasedonIocaledgeinforlTlationandafastinterpredictionmodeselectionbasedonsplitprocedureswithratedistortionoptimizationthatreducescomplexityoftheH264encodingwithanegligibleaver

12、agePSNR10S$andamerebitrateincreaseIntheend，thepartsthatfittooptimizationbvMM列SSEinstructionsetarefoundoutandrealized，Then，optimizationmethodsindatastructure，memoryallocationandprogramdesignareproposedandimplementedKey：H2