基于h.264的熵解碼與環(huán)路濾波算法的研究與實現

1、武漢理工大學碩士學位論文基于H.264的熵解碼與環(huán)路濾波算法的研究與實現姓名：王濤申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：尹勇20100401武漢理工大學碩士學位論文AbstractAstheH264broughtcodecefficiencythesanletimehasalsobroughtincreasedcomputationalcomplexitySohowtoreducethecomputationalcomplex

2、ityofH264tomeetthecommonembeddedplatformbysoftwaremethodandimplementtheH264applicationsultimatelyonmobiledeviceshasbecametheresearchfocusinmanyresearchinstitutionsandinstitutionsThestudygoalinthispaperistoachieveinrealti

3、medecodingonARM9platformthroughalgorithmimprovementsandcodeoptimizationforthetime—consumingmodulesoftheH264decodingprocessandthemainworkasfollows：ThesecondchapterinthepaperisabouttheresearchoftheCAVLCdecodingalgorithmThi

4、schapterfnstanalyzedthemainreasonwhataffectingtheentropydecodingspeedinCAVLCentropydecodingprocessfindingvariablelengthcodetable，atthesametimetestsoftwarehasbeenusedtoanalyzetime—consumingtoidentifythemaintime—consumingm

5、oduleThenthischapterinvestigatedthemethodabouttherelatedliterature’Sauthorhowtooptimizethevariablelengthcodetable，onthisbasis，thepaperputforwardanimprovedalgorithmforCAVLCdecodin哥basedondatastorageformatandthecodetablead

6、dressmappingalgorithmBychangingthedatastorageformatinthischapter，thestoragespaceWassavedWecaildeterminethemappingbetweenthecodewordandthearraysubscriptbyanalyzingthecodewordcharacteristicsByusingthesubscripttofindmatchin

7、ginformationcarlreducethelookupoperationandthealgorithm’ScomputationalcomplexityFinallythechapterrealizedandprovedthealgorithmThet11irdchapterisabouttheresearchoftheloopfilteralgorithmTbischapterfirstanalyzedthefilterdet

8、erminingconditionsinloopfilteralgorithmBecausetheencoderusemanyforecastingmodels，toleadtoaharshjudgeconditionsforfilteringThenthearticleproposedaeffectivewaybyjudgingtheimagemacroblockboundaryissmoothThenewalgorithmfirst