新一代視頻壓縮標(biāo)準(zhǔn)算法和應(yīng)用研究.pdf

1、浙江大學(xué)信息學(xué)院博士學(xué)位論文新一代視頻壓縮標(biāo)準(zhǔn)算法和應(yīng)用研究姓名：方健申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：王匡20080401AbstractWiththedevelopmentofthemultimediaandinternettechnologydigitalvideocompressioniswidelyusedinmanyapplications，suchasvideophone，videoconference，l阿

2、VanddigitalTVInordertomeetcustomers’increasingdemandsonvideoapplications，manystandardizationorganizationshaveenactedmanynewvideostandardsThestandardsofH264，AVSandVC一1，whichalecalledthenextgenerationvideostandardsbecauseo

3、fthemoreexcellentperformancecomparedwiththetraditionalones，arewidelystudiednowadaysTakingthenewgenerationvideostandardsasreachobject，theauthoranalyzedandstudiedtheissuesofvideocodecframeworkinterframeprediction，intrafram

4、eprediction，transforillanddeblockingfilterandproposedseveraloptimumalgorithmsandrealizationstructures，mostofwhichhavebeenverifiedontheFPGAorASICwithsteadyperformanceFirstlyinterframepredictionandintraframepredictionforH2

5、64arestudiedAnadaptivethresholdearlyterminationsearch(ATETS)algorithmbasedonquantizationstepisproposedforintegerpixelmotionestimationandamodecorrelationbasedfractionalpixelsearch(MCFPS)algorithmisproposedforfractionalpix

6、elmotionestimationForintraframeprediction，anovelpolicybasedonmodestatisticandtransformcoefficientallzeroblock(MSZB)ispresentedWiththeseoptimumalgorithms，experimentalresultsshowthatthecomplexityofinterframeandintraframepr

7、edictionisreducednotablywithnegligibledegradationinimagequalityandcompressionrateTheoptimumH264encodercanperformvideocompressionastwicefastastheoriginaloneSecondlythevideocodecframeworkisstudiedInordertomeetthecharacteri

8、sticofthenewgenerationvideostandard，manydifferentvideocodecframeworkshavebeenproposedInthisthesis，allimplementedframeworkbasedonMPUandASICformultistandardvideodecodingisproposedBesidestheadvantageoftheASICdesign，anovelme

9、chanismofhardware—softwarecodesignisappliedwithintheframeworkwhichmakesitmorecompetitiveincostandperformanceThirdlytransformandinversetransformarestudiedThenewgenerationvideostandardsapplyseveraldifferentkindsoftransform

10、，suchas8x8DCT8x8IntegerDCT4x4IntegerDCT8x4IntegerDCTand4x8IntegerDCTAnormalized8x8transformalgorithmisproposedbyreconstructingthe8x8pixelblocksandtransformmatrixes，whichisapplicabletoallstandardsThen，animplementedstructu

11、reispresented，whichcanmeettherequirementoftransfomprocesswhilereducingthehardwareresourcesefficientlyFourthlythemultistandardvideodeblockingfilterisstudiedByreconstructingthedatastructure，anovelfilteringorderisproposedfo

12、rbothH264andAVSForVCl，optimumfilteringordersforoverlapfilteringanddeblockfilteringarepresentedbyextendingthereferencedataWiththeproposedfilteringorderthefilteringoperationcanbeperformedoneachmacroblockinsteadofthewholepi

13、ctureThenallimplementedstructureiSintroducedwhichCanefficientlyreducetheoperations，datathroughputandhardwareresourcesInaddition，adeblockingfilteralgorithmforerrorconcealmentispresentedtoimprovetheappearanceoftheimageItis