Blue Screen: Nws Yog Dab Tsi Thiab Yuav Siv Li Cas Hauv Kev Tsim Video

by kim Kho tshiab: Lub rau hli ntuj 26, 2022

Xiav Vijtsam, kuj hu ua chromakey, yog cov txheej txheem tshwj xeeb los siv hauv kev tsim cov yeeb yaj kiab los tsim cov duab sib xyaw los ntawm kev sib txuas ob daim duab lossis cov yeeb yaj kiab. Nws yog siv los txheej cov duab keeb kwm yav dhau tom qab tus neeg ua yeeb yam lossis khoom siv. Siv cov txheej txheem no, ib qho kev kawm tuaj yeem muab tso rau hauv ib qho keeb kwm yav dhau, tso cai rau cov neeg ua yeeb yaj kiab los tsim cov yeeb yaj kiab uas ib txwm ua tsis tau hauv lub neej tiag tiag.

Cia peb dhia dej rau hauv cov txheej txheem no ntxiv thiab tshawb xyuas seb nws tuaj yeem siv tau li cas hauv kev tsim video.

Lus txhais

Xiav npo, los yog Chroma yuam sij nyob rau hauv cov ntsiab lus technical, yog ib hom tshwj xeeb teebmeem nyob rau hauv video thiab TV ntau lawm uas tso cai rau cov neeg tsim khoom kom superimpose ib daim duab dua lwm tus. Qhov kev pom pom no feem ntau yog siv rau scenes nrog cov neeg ua yeeb yam cuam tshuam nrog lub ntuj lossis tsim keeb kwm yav dhau los uas yuav tsis tuaj yeem ua tsis tau lossis kim dhau los ua yeeb yaj kiab ntawm qhov chaw. Cov neeg tsim khoom tuaj yeem ua tiav cov txiaj ntsig no los ntawm kev tua cov ntsiab lus hauv pem hauv ntej ntawm lub ntsej muag xiav thiab ci ntsa iab, tom qab ntawd hloov lub vijtsam xiav nrog txhua qhov backdrop lawv xaiv.

Tus txheej txheem ntawm chroma keying pib los ntawm kev teeb tsa lub vijtsam xiav tom qab - feem ntau yog siv ib qho evenly-lit backdrop ntawm du xiav ntaub - mus rau qhov kev kawm yog filmed. Thaum lub sijhawm ua yeeb yaj kiab, tag nrho cov ntsiab lus uas tshwm sim hauv kev kaw cov yeeb yaj kiab yuav tsum sawv tawm kom pom tseeb tawm tsam xiav keeb kwm yav dhau. Txhawm rau kom ntseeg tau tias qhov sib txawv no yog qhov tseeb ntawm lub koob yees duab, nws raug nquahu kom siv ntau qhov chaw teeb pom kev zoo uas tau muab tso rau pem hauv ntej ntawm - thiab tom qab - cov ntsiab lus raug kaw kom tsis txhob cuam tshuam cov duab ntxoov ntxoo mus rau xiav backdrop.

Thaum ua yeeb yaj kiab tiav, cov neeg tsim khoom tuaj yeem siv qhov kev mob siab rau chroma tseem ceeb software program los cais thiab tshem tawm cov pixels tsis xav tau los ntawm cov duab ntsuab tshuaj ntsuam - hloov lawv hloov nrog txhua yam tshiab digital teeb lossis keeb kwm yav dhau uas lawv tau xaiv rau lawv qhov project. Nrog rau cov txheej txheem no, nws muaj peev xwm ua tau rau cov neeg ua yeeb yaj kiab los tsim cov txiaj ntsig tshwj xeeb tsis txaus ntseeg yam tsis tas yuav tsum tau them nyiaj ntau qhov chaw tua lossis cov khoom loj.

Hom Blue Screen

Xiav npo, kuj hu ua chroma yuam sij los yog xim keying, yog a post-ntau lawm cov txheej txheem siv hauv kev tsim cov yeeb yaj kiab los ua ob daim duab ua ke. Ib qho xiav (lossis qee zaum ntsuab) backdrop yog siv nyob rau hauv keeb kwm yav dhau ntawm ib daim duab, thiab txhua qhov chaw ntawm lub backdrop uas tshwm nyob rau hauv daim duab yog ces hloov nrog lwm footage txheej saum toj. Cov kws tshaj lij thiab cov kws ua yeeb yaj kiab amateur siv lub vijtsam xiav los ua ke cov yeeb yaj kiab tua los ntawm cov chaw sib cais rau hauv ib qho chaw sib txawv.

Cov xim siv rau lub vijtsam xiav tseem ceeb; qhov no hu ua chromakey. Cov xim sib txawv tsim cov qib sib txawv ntawm qhov nyuaj thaum sib sau cov duab. Ib sab ntawm cov ntxaij vab tshaus xiav, ntau lub vijtsam ntsuab tau dhau los ua neeg nyiam. Ntsuab tau ib txwm nyiam vim nws nyob deb ntawm skintones thiab lwm yam khoom uas tej zaum yuav yuam kev rau ib feem ntawm keeb kwm yav dhau; txawm li cas los xij ib qho xim zoo tagnrho yuav nyob ntawm seb yam xws li teeb pom kev zoo, lub koob yees duab kev taw qhia thiab lwm yam.

Feem ntau hom xiav cov ntxaij vab tshaus muaj xws li:

• Chromakey Blue Screen Ib qho tseem ceeb ntawm cov hmoov-coated steel rods ua cov txheej txheem txheej txheej pleev xim nrog cov xim ua yeeb yam uas qhia txog cov xim nruab nrab xiav nyob rau hauv cov yeeb yaj kiab teeb. Hom kev tshuaj ntsuam no muab cov txiaj ntsig zoo sib xws chroma thaum ua haujlwm ntawm cov kws tshaj lij vim tias nws tsim cov teeb pom kev zoo meej.
• Ntaub Backdrops Portable ntaub backdrops yog ua nyob rau hauv ntau yam hnyav fabrics (feem ntau muslin) thiab muab primed rau painting, los yog twb pre-painted nrog ntau yam hues nrog rau cov tsoos chromakey blues ntxoov xws li ntuj los yog teal blues thiab ntsuab. Cov no ua tau zoo portable "nyob rau hauv qhov chaw" keeb kwm muab lawv nyob twj ywm wrinkle dawb thiab dai kom raug rau txawm tonal kev pab them nqi.

Cov txiaj ntsig ntawm Blue Screen

Blue screen technology yog ib lub cuab yeej nrov siv hauv kev tsim video thiab tuaj yeem muab ntau yam txiaj ntsig sib txawv. Nws tso cai rau cov neeg ua yeeb yaj kiab tuaj yeem sib sau ntau qhov kev txhaj tshuaj ua ke thiab tsim cov xwm txheej nyuaj, nrog rau ib qho chaw sawv hauv ntau qhov chaw. Nws kuj tseem siv tau los coj qhov tob ntxiv rau scenes thiab pab ntxiv qhov kev nkag siab ntawm qhov tseeb rau cov duab.

Cia peb saib ntau yam txiaj ntsig ntawm kev siv xiav screen hauv video ntau lawm:

Backgrounds

Xiav npo, kuj hu ua chroma keying, yog ib txoj hauv kev zoo tshaj ntawm kev sib txuas ob cov duab lossis cov yeeb yaj kiab los ntawm kev hloov xim hauv ib daim duab nrog lwm tus. Los ntawm kev siv ib qho ntxoov ntxoo ntawm xiav (los yog ntsuab raws li lwm txoj hauv kev), cov neeg ua yeeb yaj kiab tuaj yeem ntxig cov duab rau hauv keeb kwm yav dhau ntawm clip nrog cov txheeb ze yooj yim. Cov kev siv ntau tshaj plaws ntawm kev siv tshuab xiav-ntsiav tshuaj video thiab tseem thaij duab-yog cov ntawv ceeb toom huab cua, xov xwm tshaj tawm, thiab cov yeeb yaj kiab tshwj xeeb. Cov txiaj ntsig thiab kev hloov pauv ntawm cov tshuab xiav tshuaj ntsuam yog ze li qhov kawg; ib qho backdrop tuaj yeem muab tso rau yam tsis tas yuav mus ntsib lub cev lossis tsim teeb tsa.

Kev siv lub teeb pom kev zoo sib xws yog qhov tseem ceeb thaum ua haujlwm nrog lub ntsej muag xiav lossis ntsuab tom qab, kom cov xim siv hauv cov duab hauv ntej nyob ib puag ncig tag nrho cov txheej txheem tsim khoom. Lub koob yees duab ces kaum kuj yuav tsum tau muab rau hauv kev txiav txim siab thaum xaiv qhov chaw rau koj qhov keeb kwm sib koom ua ke; Kev hloov me ntsis hauv lub koob yees duab txoj haujlwm tuaj yeem ua rau qhov muag plooj lossis ntug pob tshab vim tsis xav tau duab ntxoov ntxoo thiab kev xav hauv kev txhaj tshuaj.

Los ntawm kev sib cais tawm thiab cais ib yam khoom los ntawm nws cov keeb kwm sib tw, koj tuaj yeem ua tiav qhov kev nkag siab ntau dua ntawm qhov tseeb ntawm kev teeb tsa thiab tshem tawm cov kev cuam tshuam los ntawm koj cov ntsiab lus tseem ceeb. Blue screen txhawb txhua hom koob yees duab video los ntawm HD rau 8K thiab tso cai rau koj mus:

• Hloov cov keeb kwm yav dhau los sai sai thaum lub sijhawm tshaj tawm nrog cov yeeb yaj kiab tshiab;
• Siv cov ntaub ntawv keeb kwm yav dhau los tsim ua ntej hauv kev tsim khoom ua ntej.

Tshwj xeeb los

siv xiav npo thaum tsim cov teebmeem tshwj xeeb coj ntau cov txiaj ntsig thiab qhov zoo rau cov txheej txheem ntau lawm. Los ntawm kev tshem tawm cov keeb kwm yav dhau los ntawm kev txhaj tshuaj thiab hloov nws nrog digital backdrop, koj tuaj yeem tsim cov teebmeem tshwj xeeb tiag tiag uas yuav tsis tuaj yeem ntes tau. Raws li ib qho ntawm cov txheej txheem tseem ceeb siv hauv kev pom kev pom, lub tshuab xiav tshuaj ntsuam ua rau cov kev txhaj tshuaj nyuaj tshaj plaws zoo li yooj yim thaum tsim cov duab pom tau zoo nrog kev siv zog tsawg.

Blue screen tso cai rau koj mus muab ob qhov chaw ntawm cov duab ua ke thiab ntxiv kev muaj tswv yim los ntawm kev sib xyaw hauv lub ntiaj teb tiag tiag rau hauv ib qho chaw lossis qhia cov cim ntxiv lossis cov khoom siv. Nws kuj ua hauj lwm raws li ib tug nthuav filmmaking txheej txheem los ntawm kev tso cai rau koj hloov los ntawm ib tug txhaj mus rau lwm yam instantly yam tsis muaj kev so nyob rau hauv nruab nrab. Tsis tas li ntawd, kev sib xyaw cov txheej txheem siv bluescreen pab cov thawj coj tsim qhov tob hauv kev txhaj tshuaj los ntawm kev muab lawv yooj yim rau txheej ntau yam khoom thiab siv lub koob yees duab sib txawv.

Los ntawm kev ua kom zoo dua ntawm kev siv technology zoo li ntsuab screen technology, cov neeg ua yeeb yaj kiab tuaj yeem coj lawv cov khoom tsim tawm mus rau qhov siab tshiab thaum tseem txuag lub sijhawm thiab nyiaj txiag siv rau cov khoom siv lub cev thiab qhov chaw. Cov ntxaij vab tshaus xiav muab cov neeg ua yeeb yaj kiab muaj kev ywj pheej ntau dua thaum nws los txog rau kev tua cov xwm txheej nyuaj uas cov neeg ua yeeb yam yuav nyuaj rau kev tswj hwm lawv ib puag ncig, lossis thaum cov cim ntxiv lossis cov khoom siv yuav tsum tshwm sim yam tsis muaj nyob hauv tus neeg rau hnub.

teeb pom kev zoo

Ib qho txiaj ntsig tseem ceeb rau kev siv a xiav npo rau kev tsim video yog txoj hauv kev uas siv lub teeb. Thaum tua nrog lub vijtsam xiav, lub teeb ci tseem ceeb yog los ntawm qab ntawm qhov kev kawm. Qhov no tshem tawm cov duab ntxoov ntxoo thiab tso cai rau kev sawv cev zoo dua ntawm kev nthuav dav. Lub teeb pom kev zoo kuj tseem pab ua kom cov xim muaj zog thiab raug, nrog rau tsim kom muaj lub teeb pom kev zoo sib xws thoob plaws scenes thiab txhaj tshuaj.

Cov cuab yeej ntawm kev xaiv rau kev teeb tsa xws li qhov no feem ntau yog ib qho LED vaj huam sib luag mounted los yog sawv ntawm sticks los yog trusses kom nws muaj peev xwm muab txawm illumination ntawm txawm theem twg yuav xav tau nyob ntawm qhov chaw. Los ntawm kev tuaj yeem kho cov xim kub los ntawm kev ntxiv gels thiab / lossis diffusions, nws muab cov neeg ua yeeb yaj kiab tswj hwm ntau npaum li cas txhua qhov kev txhaj tshuaj zoo li ntawm qhov teeb tsa, uas tsis yog tos kom txog thaum tom qab ntau lawm thaum kev hloov kho tau dhau los ua qhov nyuaj.

Tsis tas li ntawd, vim nws qhov xwm txheej ntawm kev teeb tsa ib qho teeb pom kev zoo uas koj tuaj yeem pom meej tias koj tau tua dab tsi hauv lub sijhawm tiag tiag (tsis zoo li cov ntxaij vab tshaus ntsuab uas qhov kev nkag siab tob tuaj yeem hloov pauv), kev tua nrog cov ntxaij vab tshaus xiav tau dhau los ua nrov nrog loj. nyiaj txiag studio productions txij li thaum nws taw qhia rau hauv zaj duab xis teev nyob rau hauv 2013.

Kev teeb tsa Blue Screen

Kev tshuaj ntsuam xiav yog ib qho cuab yeej tseem ceeb rau kev tsim ib puag ncig virtual uas koj tuaj yeem tso koj cov ntsiab lus lossis khoom siv hauv kev tsim cov yeeb yaj kiab. Nrog rau cov txheej txheem no, koj tuaj yeem tso txhua hom duab lossis video clip tom qab qhov kev kawm, txhawm rau tsim cov teebmeem tiag.

Kev teeb tsa lub vijtsam xiav tuaj yeem yog qhov nyuaj, tab sis nrog rau txoj kev teeb tsa thiab cov txheej txheem, koj yuav muaj peev xwm tsim ib tug kws saib video. Cia wb mus saib yuav ua li cas teeb tsa lub vijtsam xiav kom zoo:

Xaiv txoj cai Screen

Thaum nws los txog rau kev teeb tsa lub vijtsam xiav rau kev tsim cov yeeb yaj kiab, xaiv qhov zoo ntawm keeb kwm yav dhau yog qhov tseem ceeb kom tau txais txiaj ntsig zoo. Nyob ntawm koj cov peev nyiaj thiab kev xav tau, koj muaj ntau txoj kev xaiv.

Ib hom keeb kwm yav dhau hu ua a chroma ntaub ntaub. Qhov no yog ib qho kev cai ua xiav lossis ntsuab backdrop uas feem ntau yog ua los ntawm velvet lossis muslin ntaub uas tuaj yeem dai rau ntawm phab ntsa lossis raug tshem tawm los ntawm sab saud nrog cov sawv ntsug. Ib daim ntaub chroma tseem ceeb yuav tsum tsis muaj kev pleev xim, thiab muaj kev pab cuam txawm tias qhov kev sib tw zoo rau kev sib khi tsis sib haum.

Xwb, ntau qhov kev tsim khoom xaiv rau pleev xim rau tom qab. Cov no yog ib txwm muaj ob lub tiaj tiaj (sab ntawm cov plywood) mounted rau ib leeg nrog koj xaiv keeb kwm yav dhau los pleev xim rau lawv qhov chaw. Thaum cov keeb kwm no tuaj yeem muab kev tswj hwm ntau dua ntawm cov qauv tsim vim tias koj tuaj yeem pleev xim qee yam rau hauv lawv, lawv xav tau kev ua haujlwm ntau ntxiv hauv daim ntawv ntawm kev npaj ua ntej, xws li rub tawm cov ces kaum thiab pleev xim rau tag nrho cov npoo sib npaug (zoo dua nrog cov xim xim daj. rau cov ntxaij vab tshaus ntsuab thiab xim xiav rau cov ntxaij vab tshaus xiav). Lawv kuj siv sijhawm ntev dua kom qhuav ua ntej pib ua yeeb yaj kiab!

Lwm qhov kev xaiv yog nruab nrab-qhov loj me floorscreen - cov ntawv npaj ua tiav ntawm chromakey xiav cov khoom siv los ua lub voos xwmfab / tsev pheeb suab nyob ib puag ncig koj lub peev xwm thaum lawv ua tawm tsam qhov screen tom qab lawv - cov txiaj ntsig sib txawv heev nyob ntawm qhov loj thiab teeb pom kev zoo tab sis yeej pab tau thaum sim kom tau txais cov npoo huv ntawm cov ceg tawv hauv qhov chaw txhaj tshuaj. sai sai!

Thaum kawg - qee lub studios muaj digital blue/green screens - qhov no suav nrog kev tua nyob rau pem hauv ntej ntawm phab ntsa LED loj qhov twg cov xim xaiv los ntawm ntsuab lossis xiav tuaj yeem npaj rau nws raws li qhov yuav tsum tau ua - qhov no feem ntau siv thaum ua haujlwm nyob rau hauv lub sijhawm nruj qhov twg tha xim flats tsis siv tau. Tab sis nco ntsoov tias vim muaj kev cuam tshuam ntawm cov phab ntsa LED, tuaj yeem muaj kev txiav txim siab ntxiv rau hauv tus account xws li tsis txhob xav txog - ob qho tib si hauv cov txuj ci kev xaiv khaub ncaws thiab cov tswv yim teeb pom kev zoo!

Qhov kev xaiv twg koj txiav txim siab suits koj zoo tshaj; xyuas kom meej tias koj sim nws kom huv si ua ntej pib kev yees duab tus thawj tswj hwm - xyuas kom meej tias tag nrho cov tsis xav tau spill raug tshem tawm los yog accounted raws li. Nrog kev npaj ua tib zoo, teeb tsa koj tus kheej lub vijtsam xiav backdrop tsis tas yuav ua haujlwm txaus ntshai!

Teeb pom kev zoo Screen

Thaum siv lub xiav npo rau koj qhov kev tsim video, teeb pom kev zoo thiab lub kaum sab xis yog qhov tseem ceeb kom tau txais cov txiaj ntsig zoo tshaj plaws. Koj yuav xav kom lub vijtsam kom sib npaug thiab tsis muaj wrinkles lossis creases. Qhov no tuaj yeem ua tiav los ntawm kev tsim ib qho peb-point teeb pom kev zoo system.

• Txhawm rau pib, tso ob lub teeb ci ntawm ob sab ntawm lub vijtsam kom pom ob sab sib npaug.
• cov lub teeb tseem ceeb yuav tsum tau muab tso ncaj qha rau pem hauv ntej ntawm qhov kev kawm ntawm lub kaum sab xis uas tsim cov duab ntxoov ntxoo thiab qhia txog lawv cov yam ntxwv kom raug.

Tsim ib lub voj voog peb lub hlis twg nyob ib ncig ntawm qhov chaw tseem yuav pab kom tsis txhob muaj kev cuam tshuam ntawm daim duab, uas yog tshwm sim los ntawm lub teeb studio uas tsis zoo rov qab thaum cov xov xwm digital tseem tshiab rau kev yees duab. Thaum ua tiav kom raug, cov txheej txheem no yuav ua kom txhua yam nyob ze rau lub koob yees duab zoo li ntuj thaum ua kom pom tseeb dab tsi tom qab nws - tag nrho thaum txhawb kev nthuav dav thoob plaws scenes nrog kev siv zog tsawg!

Tej zaum koj kuj yuav tau kho cov teeb uas twb muaj lawm lossis hloov qhov muag teev yog tias lawv tsis muaj xim kub txaus kom phim koj lub vijtsam xiav zoo kawg nkaus; qhov no tshwm sim thaum tua rau ntawm keeb kwm ntsuab raws li daj tones feem ntau sawv tawm ntau dua. Siv sijhawm kom teeb pom kev zoo kom zoo nrog tsom aim cov ntsiab lus vim qhov no yuav tiv thaiv tsis muaj teeb pom kev zoo lossis qhov tsis sib xws hauv koj thaj chaw tom qab!

Xaiv Lub Duab Zoo

Ua ntej koj tuaj yeem pib teeb tsa lub vijtsam xiav los txhaj cov keeb kwm yav dhau los rau hauv koj cov yeeb yaj kiab, nws tseem ceeb heev uas yuav tsum xaiv lub koob yees duab zoo. Ua ntej, cov koob yees duab kim dua yuav muaj ntau yam zoo dua qub, uas yog qhov tseem ceeb rau kev yooj yim tshem tawm xiav tom qab thaum chroma keying. Thaum sib piv ntau lub koob yees duab, nrhiav ib qho nrog Codecs uas muab cov duab zoo lossis kev txhawb nqa ProRes or DNxHD/HR cov ntaubntawv povthawj siv - raws li cov no zoo-tsim rau keying.

Thaum tua nrog lub koob yees duab DSLR lossis mirrorless, teeb lub koob yees duab rau "Xinesmas” Hom thiab tua hauv RAW hom ntawv yog tias muaj - raws li qhov no yuav ua rau koj muaj txoj hauv kev zoo tshaj plaws thaum Chromakeying hauv kev tsim khoom tom qab. Txwv tsis pub, UltraHD 4K daws teeb meem muaj qhov ua tau zoo tshaj plaws vim nws tso cai rau ntau chav rau cropping ua ntej poob kev daws teeb meem.

Rau koj cov kev xaiv lens koj xav nrhiav cov uas muaj peev xwm ua raws li cov kev hloov hauv cov teeb pom kev zoo tab sis kuj tsim cov keeb kwm yav dhau los thiab qhov tshwm sim hauv ntej. Aperture yuav tsum ntsuas ntawm T-Nres ( ntsuas F-Stop + lub teeb poob los ntawm iris mechanism) raws li kev teeb tsa raug yuav tsum tau meej heev; txwv tsis pub, yuav tsum tau kho ntxiv rau hauv kev ua haujlwm tom qab. Nco ntsoov tias koj tseem xaiv lub lens wideangle uas npog tag nrho cov duab hauv cheeb tsam ntawm koj lub koob yees duab xaiv; Txoj kev no koj tuaj yeem tau txais kev txhaj tshuaj ze tshaj plaws ntawm koj qhov kev kawm tiv thaiv cov keeb kwm yav dhau - yog li muab kev ua haujlwm tsawg dua rau kev tsim cov keyers thiab cov kev daws teeb meem npog.

Editing Blue Screen Footage

Blue screen footage tuaj yeem yog txoj hauv kev zoo los ntxiv keeb kwm yav dhau los rau koj cov video ntau lawm. Nws tso cai rau koj ntxiv cov teebmeem tshwj xeeb thiab tsim cov scenes uas tsis tuaj yeem ua nrog cov txheej txheem ib txwm muaj. Kev kho cov duab xiav npo tuaj yeem ua kom yuam kev thiab siv sijhawm tab sis nrog rau txoj kev cai, koj tuaj yeem tsim cov khoom zoo kawg nkaus.

Cia peb tshawb nrhiav yuav ua li cas kho cov duab xiav screen hauv kev nthuav dav:

Chroma Keying

Chroma keying yog cov txheej txheem tshwj xeeb cuam tshuam rau kev sib txuas ob qhov sib txawv video txhaj tshuaj ua ke, los ntawm kev hloov qee yam xim tom qab nrog cov duab digital tom qab. Thaum siv hauv kev tsim cov yeeb yaj kiab, cov txheej txheem hloov pauv no yog hu ua "blue screen" los yog "green screen" vim tias cov keeb kwm yav dhau digital uas hloov pauv cov xim qub backdrop tuaj yeem yog ib qho tsim lossis duab koj xav tau. Qee qhov xwm txheej, keeb kwm tshiab tuaj yeem muaj kev txav mus los hauv nws.

Tus yuam sij rau kev tshuaj ntsuam xiav / ntsuab yog nyob hauv zoo meej xim zoo sib xws nruab nrab ntawm dab tsi raug tua nyob thiab dab tsi yuav dhau los ua cov duab digital tshiab. Yog li thaum koj pib koj cov txheej txheem chroma tseem ceeb tua, sim xaiv qhov backdrop ntawm ob qho tib si ci ntsuab lossis ci xiav - cov xim uas yuav ua rau koj qhov sib txawv siab tshaj plaws rau cov tawv nqaij thiab cov khaub ncaws xim ntawm koj cov txuj ci / cov ntsiab lus ntawm lub koob yees duab thaum tseem muab cov suab nrov txaus kom tsis txhob muaj cov khoom cuav tsim thaum koj ua koj qhov keying. Tsis txhob tso duab ntxoov ntxoo ntawm koj lub vijtsam ntsuab (natural lossis dag) vim tias lawv tuaj yeem ua rau av nkos ntawm koj tus lej cim qhov chaw thiab tsim tshwj xeeb tawv-rau-huv npoo thaum kho.

Txhawm rau tsim cov nyhuv siab tshaj plaws thiab qhov tseeb hauv kev kho, nco ntsoov tua cov duab ntawm koj cov neeg ua yeeb yam tawm tsam ib qho sib npaug lit ntsuab lossis xiav npo uas muab lawv lub ntsiab ntawm qhov tob qhov tob rau qhov tseeb txiav tawm ntawm tib neeg lossis cov khoom tawm tsam qhov sib txawv. Yog tias txhua yam teeb tsa kom raug rau chroma keying - teeb pom kev zoo yog ib qho tseem ceeb tshaj plaws - nws yuav tsum tsis txhob siv sijhawm ntau tshaj li qhov tsim nyog los hloov pauv hloov pauv ntawm cov keeb kwm yav dhau los mus rau digital realm thiab rov qab los dua thaum lub sijhawm tsim kho tom qab tsim khoom.

xim Kho

Thaum cov muaj pes tsawg leeg tau ua tiav thiab qhov chaw npaj txhij rau rendered, cov kauj ruam tom ntej ntawm cov txheej txheem tsim video yog xim kho. Thaum lub sij hawm kho xim, tus yees duab editor siv cov ntsiab lus sib txawv ntawm cov duab los yog ib ntus thiab kho lawv kom haum rau qhov kev txiav txim siab los yog saib. Qhov no suav nrog kev hloov kho qhov tsim nyog rau xim, saturation, brightness thiab sib piv.

nrog xiav screen footage, txawm li cas los xij, muaj txheej txheej ntxiv ntawm qhov nyuaj ntxiv rau cov kauj ruam no vim tias software yuav tsum tau siv rau ob qho tib si cais thiab tshem tawm cov duab ntsuab ntawm cov keeb kwm yav dhau los thiab tseem phim nws nrog rau cov keeb kwm yav dhau los lossis cov duab ua ntej.

cov lub ntsiab tseem ceeb tshaj plaws thaum nws los txog rau xim kho cov ntxaij vab tshaus xiav yog ua kom paub tseeb tias tag nrho cov ntsiab lus tsim nyog tau zoo sib xws nrog ib leeg. Qhov no suav nrog kev kho tus kheej txhua lub caij - txawm tias nws yog tus neeg ua yeeb yam lub ntsej muag lossis khaub ncaws - kom nws sib xyaw ua ke nrog cov keeb kwm yav dhau los tshiab seamlessly. Tsis tas li ntawd, tej zaum yuav muaj qee qhov cuam tshuam uas xav tau nyob ntawm seb qhov xwm txheej yuav ua li cas xws li:

• ntxiv ntxoov ntxoo
• reflections rau cov khoom cuam tshuam nrog cov tawv tawv xws li cov plag tsev lossis phab ntsa.

Txhawm rau kom ntseeg tau tias koj cov duab xiav xiav zoo li muaj tseeb ob qho tib si hauv kev sib piv rau cov keeb kwm yav dhau los nrog rau lwm cov ntsiab lus ntawm lub vijtsam zoo li cov neeg ua yeeb yam thiab cov khoom siv, siv qee lub sijhawm ntxiv tweaking txhua txheej kom txog rau thaum koj tau txais txhua lub ntsiab lus zoo kawg nkaus nrog ob qho tib si ib puag ncig thiab nws cov phooj ywg.

Ntxiv cov teebmeem tshwj xeeb

Ntxiv cov teebmeem tshwj xeeb rau koj cov duab xiav xiav yog ib txoj hauv kev zoo siab tshaj plaws thiab nyuaj los siv cov txheej txheem no hauv kev tsim cov yeeb yaj kiab. Ntau lub vijtsam ntsuab thiab xiav yuav xav tau cov txheej txheem zoo nrog cov khoom txav thiab ntau lub teeb pom kev zoo, piv txwv li.

Yuav kom ua tiav cov teebmeem pom kev nyuaj yuav xav tau cov software tshwj xeeb xws li Tom qab los ntawm Adobe or Nuj Studio. Ntxiv nrog rau kev tso cai rau koj los tsim cov teebmeem pom kev zoo, cov kev pabcuam no tuaj yeem siv rau xim kho, sau ntawv thiab lwm yam kev ua haujlwm kho.

Lwm qhov tseem ceeb ntawm kev tsim lub ntsej muag xiav lossis ntsuab ntsuab yog qhov tseeb rotoscoping-tus txheej txheem ntawm kev tsim matte los yog ib qho alpha channel nyob ib ncig ntawm tus neeg ua yeeb yam kom lawv sib xyaw rau hauv cov duab tom qab seamlessly. Qhov no feem ntau yog ib txoj haujlwm hnyav vim nws yuav tsum tau taug qab txhua tus ncej ntawm cov duab manually. Hmoov zoo, qee qhov kev tshaj tawm video tsim software muaj tsis siv neeg rotoscoping muaj peev xwm uas tuaj yeem siv los ua kom cov txheej txheem no nrawm heev.

Txhawm rau tsim cov txiaj ntsig zoo tiag tiag siv cov ntxaij vab tshaus xiav lossis ntsuab, nws yog qhov tseem ceeb uas koj yuav nqis peev sijhawm txaus kev soj ntsuam koj xav txhaj tshuaj nyob rau hauv ntau yam kev saib ua ntej shooting pib. Yog tias koj paub tseeb tias qhov kev xav tau zaum kawg tau ua tiav thaum lub sijhawm ua ntej ua ntej, qhov muaj feem cuam tshuam tom qab kev tsim khoom yuav zoo dua thiab ua haujlwm zoo dua!

xaus

Kev siv cov xiav screen rau kev tsim video yog ib lub cuab yeej muaj txiaj ntsig zoo rau kev tsim cov duab tiag tiag thiab scenes hauv video. Nws tso cai rau cov neeg tsim khoom ntxiv tshwj xeeb teebmeem thiab ua kom cov yeeb yaj kiab txaus nyiam. Lub vijtsam xiav tuaj yeem tsim kev xav zoo rau cov yeeb yaj kiab thaum tso cai rau cov neeg tsim khoom ntxiv qhov tshwj xeeb saib rau qhov chaw.

Nrog rau kev siv thiab kev npaj tsim nyog, lub vijtsam xiav tuaj yeem yog cov cuab yeej muaj txiaj ntsig zoo hauv cov txheej txheem ntawm kev tsim video.

Ntsiab lus

Thaum xaus, xiav screen lossis ntsuab screen technology tau qhib qhov dej nyab rau kev tsim yeeb yaj kiab. Kev siv cov keeb kwm yav dhau los yooj yim tuaj yeem ua rau muaj kev hloov pauv loj hauv kev tsim cov kev txhaj tshuaj zoo nkauj thiab cov duab zoo nkauj. Thaum siv thev naus laus zis yuav zoo li tsis txaus ntseeg thaum xub thawj, tsuas yog ob peb kauj ruam koj tuaj yeem tsim cov teebmeem kev tshaj lij uas yuav coj koj cov haujlwm mus rau lub neej.

Nws yog ib qho tseem ceeb kom nco ntsoov tias a ib puag ncig zoo teeb yog qhov tseem ceeb kom tau txais cov txiaj ntsig zoo - txwv tsis pub koj yuav pom ntau lub suab nrov dua li duab. Kev npaj kuj yog qhov tseem ceeb, txhais tau hais tias kev npaj ntawm lub cev thiab lub hlwb. Nco ntsoov teeb rau koj keeb kwm yav dhau thiab nkag siab thaum nws ua haujlwm zoo tshaj plaws rau kev txhaj tshuaj tshwj xeeb. Thaum siv kom zoo, lub vijtsam xiav (lossis lub vijtsam ntsuab) yuav ua rau pom qhov zoo tshaj plaws ntawm koj qhov kev muaj tswv yim thiab ua cov lus qhia hauv txhua qhov kev tsim yeeb yaj kiab - txawm tias nws loj lossis me.

Cov Kev Pab Rau Cov Lag Luam

Txawm hais tias koj nyuam qhuav pib tawm hauv kev tsim yeeb yaj kiab lossis koj yog tus neeg siv paub ntau dua, muaj ntau cov kev pabcuam los pab koj kawm paub siv lub vijtsam xiav kom raug. Nov yog qee cov phau ntawv thiab cov yeeb yaj kiab uas siv tau los pib:

• Phau ntawv:
  • Blue Screen Production Techniques los ntawm Jonathan Turner
  • Blue Screen Teeb pom kev zoo rau zaj duab xis thiab yees duab los ntawm Peter Stewart
  • Siv Blue Screen thiab Green Screen Techniques rau Video Production los ntawm Dang Dawb
• cov yeeb yaj duab:
  • Advanced Blue & Green Screen Tips nrog Scott Strong (Premiumbeat)
  • Tshem tawm Cov Khoom Tsis Txaus Siab los ntawm Blue Screen nrog Alan Leibovitz (Premiumbeat)
  • Yuav ua li cas kom tau txais Cov txiaj ntsig zoo meej xiav / Ntsuab tshuaj ntsuam (Rocketstock)
  • Lub tswv yim rau kev tua hauv Chromakey Chaw (Videomaker YouTube Channel).

Nyob zoo, Kuv yog Kim, niam thiab ib tus neeg nyiam nres nrog keeb kwm yav dhau los hauv kev tshaj tawm thiab kev txhim kho lub vev xaib. Kuv muaj kev mob siab rau kev kos duab thiab kev ua yeeb yam, thiab tam sim no kuv tab tom dhia taub hau ua ntej mus rau hauv lub ntiaj teb nres. Nrog rau kuv qhov blog, Kuv tabtom qhia kuv cov kev kawm nrog koj.