基于h.264标准的视频压缩关键模块的.研究与其vlsi设计

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1、AbstractTITLE：ResearchandVLSlImpIementatiOnOfKeyMOdUIesBased0ntheH．264VldeoCodingStandardMajor：MicroeIectronicsandSolidElectronicsName：ChanJ{angTutOr：PrOfeSsorNingmeiYuH．264VideocompressionisahybridcodingmethodofpredictionencodingwithmotioncompensationandtraJlsfomlencodingbasedonimagemacro

2、blockorblock．Ithashi曲coIIlpressione伍ciencyaJldhighimagequalityarepreserved．Thediscretecosinetrallsfornl(DCT)aIldtheHadamardtrallsfonnwasusedasthemainmethordoftraIlsfornlcodingforH．264．Predictedresidualimageblocktransfonncoding甜ldmotioncompensationbringblockingefrect．DeblockingloopfilterSys

3、teminH．264／AVCcanreducemeblockinge圩ect，thene11llaJlcesubjectiVeVisuale艉ct．7rhispapermainlydotheresearchfbomalgorithma11dhardwarefealization．Firstly，TIlispaperbrienyintroducesthebasicprincipleofvideocompression．AndthengiveaintroduceofH．264keytechnology．ARerthat，DetailiIltroducetheprincipleo

4、ftransfonncoding，quanlization，inVersequanlizationa11ddeblockingloopfilter，fbmmakingin-depthresearchofalgoritm，masterythecruxofthekeytecllllologiesandtheircorrelation．7I’llrou曲a薹lalysing恤integerDCTtra芏lsfornlandQualltizationinH．264，designed恤eh砌w2Lrecircuit．The2D-DCTisconducted恤oughseperable

5、1D—DCT，1D—DCThardwarestructurebasedonthe如stpapilionaceousalgorithm；ConstmctingoftheDCTaIldHadalllardReusablehardwarestmctureforintramacroblock，aIldusetheparallelstn】ction；8x8aIld4x4blocktmsfomcodingbasedontllereusablerowa11dcolwnntraIlsformunit；InordertoeIlllaIlcethespeedofimageprocessing，

6、qualltization，inVersequantizationaIldreconstmctedimagemoduleusemeparallelstmction；AccordillgtoSATD’scomputationchar{lcteristics，thispaperproposesahigh-parallized，pipilinedarchitecture，Inaddition，4-2compressorinsteadofthetr{lditionaladderisemployedtoimprovethe蛐姗ationspeed；Acordingtoloop矗lte

7、rcomputationcharacteristicsdesignedhardwarearcllitecture，wllichincludebourldarystrong(BS)module，fihercalculationmoduleandthetopmodule，BSmoduledecreaseⅡlenumberofjudgementcycling，filtercalculationmoduleusefiVepipilinedstnJction．Finally，the撒11itectWepresentedint