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Them sai sai rau kev tshawb fawb ntawm cov kua siv lead ua kua

Jul 04, 2018

           Them sai sai rau kev tshawb fawb ntawm cov kua siv lead ua kua

   Xim, lub ntsiab lus uas yuav tsum tau hais
Kev sib tham tsis ntev los no ntawm cov xim ntawm LCD cov lus qhia tau ua qhov ntau dua thiab ntau dua kev kub hnyiab. Los ntawm 16.2M, 16.7M, mus 8thiab thiab 6this, cov ntsiab lus ntawm cov ntsiab lus tsis yog tias tsis muaj qhov tseeb, tab sis kuj ua tau yooj yim. Tsab ntawv no yuav tsom xam qhov txawv ntawm qhov kev pom kev ntawm koj, thiab thaum kawg rau daim ntawv thov, kom koj ua tau haujlwm zoo thaum koj xaiv LCD.
Dab tsi yog qhov tseeb xim
Los ntawm qhov pom ntawm cov xim, ob qho tib si CRT thiab LCD muaj lub tswv yim ntawm cov xim tiag tiag, uas txhais tau hais tias peb cov xim raws hauv RGB (xim liab thiab ntsuab) muaj peev xwm los tso saib 256 qib ntawm nplai grey hauv physics. Txhua CRT lus muaj peev xim muaj tseeb, thaum LCD ntsuas tsis yog. Lub LCD vaj huam sib luag, uas qhia qhov tseeb ntawm cov xim hauv physics, yog hu ua tiag tiag vaj huam sib luag - uas yog, nws muaj peev xwm los tso saib 16777216 xim hauv physics.

     

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Ib tsav IC siv raws li cov kua siv lead ua kua
Yuav ua li cas yog lub 8bit vaj huam sib luag thiab 6bit vaj huam sib luag txhais?
Cov xim duab muaj peev xwm ntawm LCD panels feem ntau yog siv los ntawm txhua cov xim channel. Lub LCD vaj huam sib luag tuaj yeem pom cov naj npawb ntawm cov nplai gray los piav txog nws. Yog hais tias 256 (2 ntawm 8 square square = 256) gray scale yuav tshwm nyob rau txhua qhov xim channel, peb hu nws lub 8bit vaj huam sib luag, uas yog qhov tseeb ntawm cov xim dub; Yog hais tias tsuas 64 (2 ntawm 6 square = 64) gray scale yog tso tawm kom pom ntawm txhua lub channel, ces peb hu nws lub 6bit vaj huam sib luag, uas yog qhov tseeb fake xim vaj huam sib luag. Tam sim no mainstream cov duab LCD, xaiv 6 ntsis thiab 8 theem ob hom ntawm cov khoom siv, hauv cov khoom siv tsawg-kawg siv cov khoom 6bit vaj huam sib luag khoom ntau dua.
Txoj kev sib raug zoo ntawm lub sij hawm teb thiab xim
Tus naj npawb ntawm cov npo LCD yuav nkag siab los ntawm qhov pom ntawm tus tsav tsheb ntau tshaj plaws ntawm IC uas tau tsav los ntawm cov duab LCD. Piv txwv, qhov siab tshaj plaws ntawm cov neeg tsav tsheb rau 6bit vaj huam sib luag tsuas yog 64 txoj kev, uas tsis tau raws li qhov yuav tsum tau ua ntawm qhov xim ntawm cov xim tiag tiag. Tab sis tsav tsheb muaj tsawg tsawg ntawm txoj kev yog qhov tseem ceeb, xws li txo cov voj voog ua haujlwm thiab txo cov teeb meem ntawm cov qauv tsim pom thiab pom zoo. Los ntawm lub cev ntawm lub siv lead ua kua ua kua, nws to taub tias cov 6bit vaj huam sib luag yog lub xeev tsuas yog 64 tswj ntawm cov ntshiab dub thiab dawb ntshiab, uas yog ib qho yooj yim rau kev tswj, uas yog vim li cas feem ntau ntawm 12 milliseconds thiab 8 milliseconds ntawm LCD feem ntau yog vaj huam sib luag ntawm 6 ntsis.

  

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Cov xim ntawm lub 6bit vaj huam sib luag tsis yog 2% ntawm 8bit vaj huam sib luag.
6bit vaj huam sib luag tsuas tso saib 262144 xim (64 * 64 * 64 = 262144), thaum lub 8 npooj vaj huam sib luag tau tso tawm 16777216 xim (256 * 256 * 256 = 16777216). Lub cev, lub 6bit vaj huam sib luag tuaj yeem tso tawm tsawg tshaj 2% ntawm 8bit vaj huam sib luag.
Tiam sis hauv kev siv, ob lub phiaj xwm uas tso saib ntau ntau zaus ntawm cov xim yog yuav luag zoo ib yam li cov neeg siv feem ntau. Vim tias ntawm tus neeg siv qhov kev pom, ntau cov duab zoo nkauj. Qhov tseeb, cov xim uas siv hauv daim duab lossis yees duab tsis ntau. Nws yog feem ntau yuav tsuas yog kaum tawm txhiab los sis pua pua txhiab tus xim, thiab 16 lab 770,000 xim tsis txaus yuav tshwm sim tib lub sijhawm.
Thiab zoo nkaus li muaj xim zoo heev los ntawm tus neeg siv txoj kev siv cheeb tsam thiab lub siab ntawm tus neeg siv rau xim. Rau cov neeg siv tau cov tsis muaj kev cob qhia, qhov txawv ntawm cov duab ntawm 260 txhiab xim thiab lub peev xwm los tso saib 16 lab 770,000 xim tsis tseem ceeb.
Xim li cov cuab yeej siv rau "lub neej mus ntev" rau lub rooj seem 6bit
Txawm tias cov 6bit vaj huam sib luag tsis muab piv rau lub 8bit vaj huam sib luag, nws tsis tsim nyog los tig nws mus rau hauv ib lub 8bit vaj huam sib luag los ntawm kev txheeb xyuas nyiaj txiag. Nyob rau hauv lub ntsej muag ntawm qhov kev thov ntawm cov neeg siv, LCD tuam txhab tau pib lawv cov xim kom raws li kev siv tshuab rau 6 lub voj voog.
Qhov no zoo li ntawm LCD xim zoo li tshuab, lub hom phiaj tseem ceeb yog nqaim qhov sib txawv nruab nrab ntawm 6bit vaj huam sib luag thiab 8bit vaj huam sib luag, thiab ntev daim ntawv thov lub neej ntawm 6F vaj huam sib luag. Los ntawm cov kev taw qhia kev pom, nws tsuas yog siv cov PD (Pixel Dithering, pixel jitter) algorithm los yog FRC (Tus Nceeg Tus Nqi Tswj, thev npaum licas tswj) technology. Cov kev yees duab ob yog yooj yim to taub yog saib ntawm qhov kev xav ntawm chromatic science.
Kev siv ntawm qhov muag pom tsis tau
Kev siv animation, FRC technology tsuas yog siv tus neeg tus yam ntxwv ntawm lub cev xws li kev pom qhov muag, uas txhais tau hais tias qhov ci ntsa iab ntawm tib neeg qhov muag tsis ploj tam sim ntawd nrog lub disappearance ntawm lub ci ntawm qhov khoom. Cov duab hauv qab no yog ib qho piv txwv zoo rau kev pom qhov muag pom. Tsis muaj qhov chaw dub nyob hauv daim duab, tab sis peb lub qhov muag pom tau ntau qhov dub me ntsis.

  

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   Daim duab no siv cov kev pom zoo ntawm qhov muag pom ntawm qhov muag liab qab los qhia peb txog kev ua kom lub vaj huam sib luag tso tawm ntawm 6 xim ntau xim.
Kev siv tshuab FRC yog ua raws nraim li cov qauv hauv daim qauv qhia saum toj no. Peb tuaj yeem pab cov neeg nyeem kom to taub nws los ntawm qhov sib piv. Koj tuaj yeem sim tig lub computer screen (dua li CRT zaub) rau hauv puv npo ntshiab liab, thiab mam li hloov mus puv npo ntshiab daj. Thaum lub caij no peb cia li hloov, qhov peb pom ntawm qhov screen tsis liab lossis daj, tab sis txiv kab ntxwv. Yog vim li cas ho yog thaum pib ntawm liab tseem nyob hauv peb qhov muag vim qhov muag pom tsis pom, thiab lub teeb daj tshiab thiab lub caij nyoog liab lub teeb liab superposition, peb "pom" txiv kab ntxwv, xim uas tsis muaj nyob. Lub 6bit vaj huam sib luag tau txais cov xim ntawm 16.2M los ntawm ib qho kev algorithm, uas yog los ntawm qhov no.
Muaj kev tswj xyuas ntawm tus ncej npaum li cas, ntxiv nrog rau ib qho kev tswj ntawm cov xim ntawm cov uas nyob ib sab, yog li thaum peb saib cov duab hauv daim LCD duab, peb tseem tuaj yeem pom cov xim uas cov duab LCD tsis tuaj yeem pom. Tau kawg, cov neeg muag khoom loj muaj lawv cov cuab yeej technology, thiab muaj qhov sib txawv ntawm txoj kev thiab cov ntsiab lus ntawm lawv cov kev siv, yog li lawv muaj ntau lub npe rau lawv tus kheej cov cuab yeej technology. Nyob rau hauv cov xim li no, qhov sib piv Co yog qhov muaj hwj chim, siv tib lub vaj huam sib luag, qhov sib txuam Co cov khoom xim yuav zoo dua li feem ntau ntawm cov neeg sib tw, yog vim li cas qhov no.
Dab tsi ua kua dej qab ntsev?
Rau cov neeg siv tib yam, LCD ntawm 6bit vaj huam sib luag yog tam sim no yeej txaus, thiab qhov sib txawv ntawm lub 8bit vaj huam sib luag yuav txo tau ntxiv los ntawm lub pixel jitter algorithm thiab cov thav duab tus nqi tswj kev lag luam.
Lub sijhawm zoo thiab kev siv qhia rau peb tias 16.2 M thiab 16.7M tsis muaj qhov sib txawv hauv feem ntau cov kev siv, lawv ua tau zoo sib xws. Thiab qhov kom zoo dua ntawm 16.7M xim yog tias nws tuaj yeem pom ntau dua kev hloov xim, uas yog, hloov maj mam hloov ntawm cov xim, 16.2M khoom nyob rau hauv kev kawm gradient feem ntau nrog ib tus ntaiv meej zoo li kab txaij, ntawm qhov tsis sib xws, 16.7M cov khoom muag zoo heev.
Samsung lub 193P Plus, ntawm tso tawm xyoo tas los ntawm CeBIT, muab sij hawm 8 millisecond raws li lub 16.7M xim uas tau hais tias yog ib yam khoom zoo ntawm cov xim thiab kev ua haujlwm. Tab sis peb kuj yuav tsum paub hais tias qhov theem software no thiab qhov kho vajtse tiag tiag ntawm 8bit vaj huam sib luag tso saib 24 ntsis xim, thiab qhov txawv yog pom tseeb. Nyob rau ib qho kev tshwm sim, cov 6bit vaj huam sib luag lub LCD cov duab tsis yog los ntawm cov kev xav tau.
16.2M yog lub peev xwm ntawm software los txhim kho cov duab xim, thaum 16.7M yog lub peev xwm ntawm lub cev. Qhov sib txawv ntawm lawv yog tsis 500 txhiab xim. Rau cov neeg siv uas xav paub ntau tshaj xim los yog muaj lub tswv yim ntawm cov lus taw kev rau kev tsim cov kev coj ua, nws pom zoo kom xav txog qhov LCD cov duab ntawm lub 8bit vaj huam sib luag.
EIZO siv 10 tsav tsav IC rau cov khoom siv high-end rau tib neeg, thiab paub cov xim qib LCD zoo rau qib tshiab.
Tab sis tam sim no, 8bit vaj huam sib luag tsis yog qhov kawg ntawm LCD hauv pes tsawg tus cov roj teeb, 1 rau cov neeg siv khoom tsim, tsuas yog cov tshuaj CRT, txawm tias 16.7 M LCD zaub yog deb ntawm txaus. Yog vim li cas thiaj li EIZO tau tsim muaj 10 lis neeg tsav tsheb IC rau nws cov qib high-end LCD kom tau raws li kev cai siab ntawm cov xim rau cov neeg siv kev tshaj lij.
Nyob rau hauv cov nqe lus ntawm kev thov, Photoshop tau ntev txaus siab rau 16 qhov tseeb ntawm RGB ib channel. Lub ntsiab txhais ntawm cov xim tseeb ntawm 24 xim yuav raug tshem tawm los ntawm cov qauv siab dua yav tom ntej. ("khoos phis tawj")