Dab tsi yog tag nrho cov squares thiab jagged npoo kuv tej zaum kuj pom hauv kuv lub TV?
Thaum peb saib ib qhov kev pab cuam lossis yeeb yaj kiab hauv TV lossis video projection screen, peb xav pom cov duab huv uas tsis muaj kev cuam tshuam, thiab tsis muaj artifacts. Hmoov tsis, muaj twv yuav raug hu ua qhov xwm txheej uas tsis tshwm sim. Ob undesirable, tab sis, ntau, artifacts koj yuav pom ntawm koj lub TV lossis projection screen nyob rau hauv cov chav kawm ntawm saib yog Macroblocking thiab Pixelation.
Qhov Makroblocking Yog Dab Tsi
Macroblocking yog cov yeeb yaj kiab uas muaj cov duab lossis cov cheeb tsam ntawm ib daim duab duab tuaj yeem ua rau ntawm cov square squares, es tsis yog cov ntsiab lus kom ncaj thiab cov npoo ntawm tus ntug. Cov blocks yuav tshwm sim thoob plaws hauv daim duab, los yog hauv cov duab xwb. Qhov ua rau muaj kev lag luam muaj feem xyuam rau ib los yog ntau dua ntawm cov nram qab no: video compression , cov ntaub ntawv xa mus ceev, teeb liab cuam tshuam thiab kev ua video ua.
Thaum twg qhov Macroblocking Feem Cuam Tshuam
Macroblocking tseem ceeb tshaj plaws rau cable, satellite, thiab internet streaming cov kev pab cuam raws li cov kev pab cuam no qee zaus siv cov yees duab yees ntau heev thiaj li nyem nyem ntau hauv lawv qhov kev sib txuas ntawm cov khoom txuas hlau.
Macroblocking kuj tuaj yeem tshwm sim tau, rau qhov qis dua, thaum lub caij TV tshaj tawm huab cua. Nws cov teebmeem tshwm sim dua rau hauv kev zov me nyuam ntu nrog ntau ntau lub suab (football yog ib qho piv txwv) raws li qhov yuav tsum tau ntxiv cov ntaub ntawv video kom muab xa mus rau txhua lub sijhawm.
Lwm yam tseem ceeb uas yuav ua rau muaj kev lag luam yog qhov cuam tshuam kev cuam tshuam ntawm kev tshaj tawm, xov tooj cua los sis cov teeb liab. Yog tias qhov no tshwm sim, koj tuaj yeem pom cov duab tseem ceeb hauv koj lub TV lossis qhov project qhov project uas yog tsim los ntawm cov plaub fab thiab kab tav toj lossis txoj kab ntsug.
Macroblocking kuj tuaj yeem yog qhov ua tsis zoo ntawm kev yees duab thiab / los yog ua ub ua no los ntawm cov yeeb yaj duab lossis cov khoom ntaus ntawv. Piv txwv li, yog tias koj muaj ib qho kev tshaj tawm DVD player uas tuaj yeem tsis ua haujlwm thiab ua yeeb yaj kiab los ntawm kev hloov mus rau HD daws teeb meem txaus, koj tuaj yeem pom qee qhov kev sib tshuam ntawm kev lag luam, dua, feem ntau yuav tshwm sim thaum lub caij nrog ntau ntau txoj kev sib txuas los yog kev sib tshuam. Macroblocking tej zaum kuj yuav hnov txog TV, Cable / Satellite broadcasts (tshwj xeeb tshaj yog hauv cov kis las ua si) qhov lus taw kev ceev heev thiab qhov thiab cov xov xwm tshaj tawm lossis koj lub TV tsis tuaj yeem khaws. Ntxiv thiab, yog tias koj lub internet ceev tsis ceev txaus , uas yuav ua rau teeb meem me me nrog cov ntsiab lus streaming.
Pixelation
Macroblocking kuj qee zaum hu ua pixelation, thiab txawm hais tias lawv zoo sib xws, pixelation yog qis dua, ntau dua stair-kauj ruam ntawm cov nyhuv uas muaj qee zaum pom tshwm ntawm cov khoom sib piv hauv keeb kwm yav dhau los, los yog cov tha xim sab hauv, ntawm lub taub hau los yog lub cev. Pixelation muab cov khoom ua kom pom. Nyob ntawm kev daws teeb meem ntawm cov duab, qhov luaj li cas ntawm qhov screen los yog li cas ze los yog nyob deb koj zaum ntawm qhov kev tshuaj ntsuam, cov nyhuv ntawm pixelation tej zaum yuav pom los yog tsawg dua.
Txoj kev zoo tshaj plaws los nkag siab txog pixelation yog siv ib daim duab siv lub koob yees duab digital los yog xov tooj thiab saib ntawm koj lub computer qhov monitor lossis laptop screen. Tom qab ntawd zoom hauv los yog tshuab li qhov luaj li cas ntawm daim duab. Qhov ntau koj zoom hauv los yog tshuab cov duab, qhov rougher cov duab yuav saib, thiab koj yuav pib saib cov npoo tawv thiab tsis meej. Thaum kawg, koj yuav pib pom tias cov khoom me thiab cov npoo ntawm cov khoom loj pib zoo li cov khoom me me.
Macroblocking thiab Pixelation ntawm Cov Ntawv Sau Dawb
Lwm txoj kev uas koj tuaj yeem ntsib macroblocking thiab / lossis pixelation yog hauv cov ntaub ntawv kaw DVD . Yog tias koj lub DVD recorder (lossis PC-DVD txawj sau ntawv) tsis muaj lub suab sau ntawv txaus los sis koj xaiv 4, 6, los yog 8 cov ntaub ntawv sau (uas ua rau kom siv tau ntau npaum li cas) thiaj li tsim nyog video , DVD recorder yuav tsis muaj peev xwm txais cov nqi ntawm cov ntaub ntawv yees duab.
Yog li ntawd, koj yuav xaus nrog ob qho tib si sib quas ntais poob nqis, pixelation thiab txawm tias muaj teebmeem me-ntsis teebmeem. Nyob rau hauv cov ntaub ntawv no, txij li cov thav duab thiab cov pixelation thiab / los yog cov teebmeem macroblocking yeej tau kaw rau hauv disc, tsis ntxiv video ua rau DVD neeg uas ua ntawv lossis TV tuaj yeem tshem tau lawv.
Lub Kab Hauv Qab
Macroblocking thiab Pixelation yog cov khoom artifacts uas tshwm sim tau thaum saib cov ntsiab lus yeeb yaj kiab los ntawm ntau qhov chaw. Txij li cov tshuaj macroblocking thiab pixelation tuaj yeem tshwm sim ntawm ib qho ntawm ntau yam, tsis muaj teeb meem dab tsi hauv TV, koj yuav muaj kev cuam tshuam rau cov teeb meem.
Txawm li cas los xij, video codec codecs (xws li Mpeg4 thiab H264 ) thiab ntau dua kev yees duab ua haujlwm thiab cov kev lag luam dua tau nce cov qauv ntawm kev lag luam thiab pixelation thoob cov board los ntawm kev tshaj tawm, cable thiab streaming cov kev pab cuam, tiam sis cov teebmeem kev cuam tshuam yog qee zaum tsis muaj kev tiv thaiv.
Tsis tas li ntawd, nws yuav tsum raug sau tseg tias cov kev lag luam thiab cov pixelation tseem muaj peev xwm tsim tau los ntawm cov ntsiab lus tsim tawm los yog cov tshaj tawm, xws li thaum haiv neeg cov ntsej muag, tsheb daim ntawv tsav tsheb, lwm lub cev los yog lwm cov ntaub ntawv qhia tsis meej los ntawm cov neeg muab kev pab cuam los ntawm TV saib.
Qhov no yog qee zaum ua hauv TV xov xwm, kev ua yeeb yaj kiab hauv TV, thiab tej kis las uas neeg tsis kam tso cai rau siv lawv daim duab, tiv thaiv tus neeg raug txhom tus neeg raug txhom tsis raug thaum raug ntes lossis thaiv cov npe ntawm cov npe tee-tsho lossis cov kaus mom.
Txawm li cas los xij, tsuas yog siv cov cuab yeej siv, Macroblocking thiab Pixelation yog cov khoom uas tsis zoo nkauj tshaj plaws uas koj tsis xav pom hauv koj lub TV.