Dab tsi yog qhov txawv ntawm interframe thiab intraframe compression?
Dab tsi yog qhov txawv ntawm interframe thiab intraframe compression?

Video: Dab tsi yog qhov txawv ntawm interframe thiab intraframe compression?

Video: Dab tsi yog qhov txawv ntawm interframe thiab intraframe compression?
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Intraframe compression tsuas yog tshwm sim nyob rau hauv txhua tus ncej. Interframe compression siv qhov tseeb no rau compress cov duab txav. Interframe compression suav nrog kev txheeb xyuas cov kev hloov pauv hauv yeeb yaj kiab los ntawm thav duab mus rau thav duab thiab ua kom nco ntsoov tsuas yog cov seem ntawm cov duab uas tau hloov pauv.

Raws li txoj cai, intraframe compression yog dab tsi?

Intraframe compression tsuas yog cov txheej txheem ntawm compressing txhua tus duab (thav duab) hauv video. Nyob rau hauv cov ntaub ntawv ntawm MPEG yeeb yaj duab, txhua tus neeg JPEG ncej yog compressed siv DCT encoding raws li tau piav qhia saum toj no. Cov ncej no ces hu ua i-frames.

Tom qab, lo lus nug yog, dab tsi yog intra twv ua ntej? Txhawm rau ua tiav qhov kev ua tau zoo coding zoo li no, ntau cov txheej txheem raug siv los ntawm txhua tus suav nrog cov cuab yeej coding sib txawv. Intra twv ua ntej yog ib qho txheej txheem uas qhov ua tiav ntawm cov duab tau sim ua kwv yees los ntawm yav tas los qhov chaw encoded.

Yog li ntawd, dab tsi yog lub sij hawm compression?

Temporal compression yog ib qho kev txo qis compressed video loj los ntawm tsis encoding txhua thav duab ua ib daim duab tiav. Cov thav ntawv uas tau encoded kiag li (xws li cov duab zoo li qub) hu ua key thav ntawv. Tag nrho lwm cov thav duab hauv video yog sawv cev los ntawm cov ntaub ntawv qhia txog kev hloov pauv txij li tus ncej kawg.

Dab tsi yog spatial compression?

spatial compression - Khoos phib tawj txhais kom txo cov video cov ntaub ntawv ntau thiab tsawg los ntawm compressing cov pixels nyob rau hauv txhua tus ncej ntawm nws tus kheej. Kuj hu ua "intraframe" txoj kev. Sib piv nrog lub sijhawm compression . Saib qhov chaw redundancy thiab intraframe coding.

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