視頻編碼去塊效應(yīng)及DSP中驅(qū)動程序的研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文視頻編碼去塊效應(yīng)及DSP中驅(qū)動程序的研究姓名：文強申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：朱光喜20040510華中科技大學(xué)碩士學(xué)位論文AbstractBlockartifactisamajorcausationofreducingthequalityofpictureinvideocoding，especiallywhenthebitrateislowSupportedbythenationalhigh

2、technologyresearchanddevelopmentprogramofChina(863Program)“JointSourceChannelCoding’(No2002AAll9010)，theworkintroducedinthisdissertationhasresearchedthealgorithmofreducingtheblockartifactinvideocodingAndunderthesupportfr

3、omKeyScienceandTechnologyItemFoundationofChinaNationalEducationMinistryfortheproject“KeyTechnologiesinModemDistanceLearning：InteractiveReal—timeEducationSoftwareTools”(No2000175)，thisdissertationalsesearchedthebootandcon

4、trolalgorithmofthevideocoderusedinDSPsystemVideocodingisnowchangingitsinternationalstandardatitszerohouriThenewemergingH264exceedsoriginalMPEG4ingreatpartbecauseofitsbetterqualityinmanyaspects，andbecomethefirstchoiceofth

5、evideocodingstandardinfuturegenerationAtthesametime，Chinaisapplyingherselfofestablishingthefirstnationalaudioandvideocodingstandard(AVSforshort)AnoverviewoftherelativeinternationalstandardsisOveninthisdissertationfirstly

6、ThenanalysesthemaintechnologiesinH264andAVS，includingquantizationandtransformcoding，motionestimationandcompensation，andentropycodingThenanalysesthecausationoftheblockartifacts，whichreducethevisualqualityofvideocoding，and

7、givesasummaryoftheresearchindetectingandreducingblockartifactsAftercomparingthesealgorithms，designsandimprovesafilteralgorithmteduceblockartifactsbasedonthecontentinAVS，whichusessmoothfilterofdifferentgranularitiesdepend