Green Screen: Nws Yog Dab Tsi Thiab Thaum Yuav Siv Nws?

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

Lub vijtsam ntsuab yog cov txheej txheem nrov siv hauv kev yees duab thiab ua yeeb yaj kiab los tsim cov teebmeem tshwj xeeb. Los ntawm kev siv lub vijtsam ntsuab, koj tuaj yeem tsim cov keeb kwm tseeb thiab cov ntsiab lus sib xyaw los ntawm ntau qhov chaw. Cov txheej txheem no feem ntau yog siv los tsim cov keeb kwm yav dhau, overlaying graphics, thiab tsim ib qho ib puag ncig virtual rau koj qhov project.

Hauv tsab xov xwm no, peb yuav hais txog txhua yam koj xav paub txog ntsuab npo thiab yuav siv nws li cas rau koj qhov project:

Green screen yog dab tsi?

Ntsuab tshuaj ntsuam yog qhov pom kev cuam tshuam (VFX) cov txheej txheem siv hauv kev ua yeeb yaj kiab uas tso cai rau tus kws tsim yeeb yaj kiab hloov cov keeb kwm yav dhau los ntawm cov yeeb yaj kiab nrog lwm cov duab lossis yees duab.

In ntsuab screen photography thiab filmmaking, cov ntsiab lus raug tua nyob rau hauv pem hauv ntej ntawm ib tug khoom-xim xim tom qab, feem ntau ntsuab, tab sis qee zaum xiav. Tom qab tua, cov duab tuaj yeem raug xa mus rau hauv ib qho video editing program zoo li Adobe Premiere. Hauv qhov program no, pixels uas yog xim tib yam li keeb kwm yav dhau (ntsuab los yog xiav) tuaj yeem raug tshem tawm thiab hloov nrog lwm daim duab lossis yees duab.

Green screen tuaj yeem ua rau nws yooj yim dua rau cov neeg ua yeeb yaj kiab los tsim qee qhov kev txhaj tshuaj vim tias lawv yuav tsis tas siv sijhawm tua ntawm qhov chaw. Nws kuj ua rau nws muaj peev xwm txheej ob peb dluab ua ke thiab txawm tsim complex animation sequences nrog yooj yim siv cov txheej txheem digital compositing. Nws tsis yog qhov xav tsis thoob tias lub vijtsam ntsuab tau dhau los ua cov cuab yeej tseem ceeb rau cov neeg ua yeeb yaj kiab thiab cov kws yees duab ib yam nkaus!

Ua li cas nws ua hauj lwm?

Ntsuab tshuaj ntsuam yog cov txheej txheem tshwj xeeb cuam tshuam uas cuam tshuam nrog kev yees duab nyob rau pem hauv ntej ntawm lub teeb ntsuab lossis xiav tom qab uas tuaj yeem hloov pauv nrog keeb kwm digital. Cov txheej txheem no tau siv rau ntau xyoo hauv kev ua yeeb yaj kiab, tsim tawm hauv TV thiab videography, thiab tam sim no tau dhau los ua neeg nyiam hauv cov zej zog streaming thiab gaming.

Cov txheej txheem cuam tshuam nrog lub koob yees duab tus neeg teb xov tooj tua cov yeeb yaj kiab nyob rau pem hauv ntej ntawm qhov loj ntsuab (los sis tej zaum xiav) screen. Lub koob yees duab tsuas yog cov ntaub ntawv xim ntawm cov ntsiab lus, tab sis tsis yog lub vijtsam ntsuab nws tus kheej, tso cai rau nws tom qab hloov los ntawm lwm yam duab xav tau. Thaum ua tiav, daim duab tshiab no tsim qhov kev tsis pom tseeb tias qhov kev kawm tau sawv tawm tsam qhov sib txawv ntawm keeb kwm yav dhau los.

Ib qho tseem ceeb ntawm kev ua kom cov nyhuv no ua haujlwm zoo yog ua tiav txawm theem ntawm lub teeb hla koj lub ntsej muag ntsuab lossis xiav. Qhov no feem ntau yuav xav tau cov khoom siv teeb pom kev zoo lossis cov cuab yeej xws li diffusers. Tsis tas li ntawd, ntau lub khoos phis tawj thiab xov tooj tam sim no tuaj nrog software tsim rau chroma keying tawm ntawm cov xim tom qab xws li ntsuab thiab xiav, yog li txhua tus neeg uas xav tsim qee qhov keeb kwm virtual zoo kawg nkaus yuav muaj txhua yam lawv xav tau ntawm lawv lub ntsis ntiv tes!

Cov txiaj ntsig ntawm Green Screen

Green screen technology yog qhov tseem ceeb heev rau cov neeg tsim yeeb yaj kiab thiab cov neeg tsim cov ntsiab lus, vim nws yooj yim cov txheej txheem ntawm kev ntxiv cov teebmeem thiab keeb kwm yav dhau rau qee qhov xwm txheej. Nws kuj yog ib qho cuab yeej zoo rau kev tsim cov teebmeem tshwj xeeb hauv cov yeeb yaj kiab nrog rau kev tsim cov txheej txheem virtual rau TV thiab video ntau lawm.

Hauv tsab xov xwm no, peb yuav tham txog qhov cov txiaj ntsig ntawm kev siv tshuab ntsuab tshuaj ntsuam hauv kev ua yeeb yaj kiab.

Nqi-ua tau zoo

Siv lub vijtsam ntsuab yog ib qho txiaj ntsig zoo kawg nkaus ntawm kev tsim cov yeeb yaj kiab zoo tshaj plaws yam tsis muaj kev siv nyiaj ntawm kev txav mus rau lwm qhov chaw lossis ntiav cov cuab yeej kim. Cov thev naus laus zis yuav tsum tau teeb tsa tsawg kawg yog li koj tsis tas yuav them tus nqi xauj tsev lossis chaw studio. Tsis tas li ntawd, thaum nws los txog rau software, koj tsis xav tau high-end kev lag luam tus qauv kev daws teeb meem - cov kev xaiv pheej yig dua feem ntau txaus.

Nws kuj tseem tso cai rau koj kom tsis txhob yuav cov khoom siv lub cev xws li rooj tog thiab décor, uas tuaj yeem dhau los sai sai raws li kev hloov pauv. Thaum kawg, ntsuab screen footage tuaj yeem hloov kho sai dua li kev tsim cov yeeb yaj kiab qub txij li thaum tsis tas yuav muaj cov teebmeem tshwj xeeb ntxiv rau feem ntau cov haujlwm.

Lub sijhawm-txuag

Green screen technology yog paub zoo rau lub sij hawm nws yuav txuag tau nyob rau hauv lub filming txheej txheem. Hom txheej txheem no muaj ntau txoj hauv kev tshwj xeeb los tsim cov ntsiab lus zoo thiab muaj txiaj ntsig sai thiab ua tau zoo.

Ib qho txiaj ntsig loj ntawm kev siv cov ntxaij vab tshaus ntsuab yog lawv ua post-ntau lawm kho kom yooj yim npaum li koj nyob nraum paub txog technology. Ntsuab tshuaj ntsuam yeeb yaj duab kuj yuav tsum tau muaj teeb pom kev zoo tsawg vim hais tias cov ntsuab tsim ib tug zoo ib yam backdrop nyob rau hauv lub scenes, ua rau nws yooj yim rau nco ntsoov cov xim twg yuav tsum tau kho.

Thaum kawg, siv cov ntxaij vab tshaus ntsuab txuag lub sijhawm thaum nws los txog rau kev txhaj tshuaj ntau yam thiab kho lawv ua ke rau hauv ib qho xwm txheej; Nrog lub koob yees duab yooj yim thiab ib qho keeb kwm ntsuab, ntau cov yeeb yaj kiab sib txawv tuaj yeem tsim yam tsis muaj cov khoom siv ntxiv lossis kev teeb tsa nyuaj.

Muaj tswv yim possibilities

Green screen technology coj ntau yam muaj tswv yim muaj peev xwm rau txhua qhov kev tsim yeeb yaj kiab. Nws muab lub peev xwm los tshaj tawm cov txuj ci tsim khoom los tsim cov duab tom qab lossis cov animations thaum lub sijhawm kho. Qhov no ua rau nws ua tau rau tus neeg saib kom tau txais kev thauj mus los zoo nyob txhua qhov chaw hauv ntiaj teb, txawm tias qhov kev txhaj tshuaj tau raug tso rau hauv ib lub studio me.

Cov ntxaij vab tshaus ntsuab kuj siv rau compositing ntau txhaj tshuaj ua ke, tso cai rau cov neeg tsim khoom thiab cov neeg kho kom muaj kev ywj pheej nrog lawv cov kev txhaj tshuaj thiab cov ntaub ntawv. Tsis tas li ntawd, cov ntxaij vab tshaus ntsuab tso cai rau cov neeg ua haujlwm thiab cov neeg ua yeeb yam sau lawv cov kev txhaj tshuaj hauv qhov chaw sib txawv thaum ua tiav qhov kev ua haujlwm tsis sib haum xeeb ntawm cov txheej txheem sib txawv.

Thaum kawg, cov ntxaij vab tshaus ntsuab feem ntau siv rau hauv txhaj tshuaj tshwj xeeb qhov twg cov ntsiab lus xws li tawg lossis cov pa luam yeeb tuaj yeem ntxiv rau tom qab kev tsim khoom, tsim kom muaj qhov tshwm sim tiag tiag uas tej zaum yuav tsis muaj peev xwm ua tau. Cov txheej txheem tib yam no tuaj yeem siv rau huab cua footage, tso cai rau cov neeg tsim khoom kom phim cov ntsiab lus los ntawm ob qhov sib txawv scenes seamlessly ua ke rau ib qho smooth hloov thaum editing scenes ua ke.

Thaum Yuav Siv Green Screen

Ntsuab tshuaj ntsuam yog cov txheej txheem ua yeeb yaj kiab thiab kev tsim yeeb yaj kiab uas muaj zog uas tso cai rau cov neeg ua yeeb yaj kiab los sib sau ntau cov duab ua ke hauv kev tsim khoom tom qab. Nws tuaj yeem pab koj tsim cov teebmeem pom tseeb, keeb kwm yav dhau, thiab ntau dua. Tab sis thaum twg yog lub sijhawm zoo tshaj plaws los siv lub vijtsam ntsuab?

Kab lus no yuav tham txog cov xwm txheej sib txawv uas lub vijtsam ntsuab tuaj yeem siv tau thiab yuav ua li cas thiaj li tau txais qhov zoo tshaj plaws:

Zaj duab xis thiab video tsim

Cov ntxaij vab tshaus ntsuab yog dav siv nyob rau hauv zaj duab xis thiab video ntau lawm los cais cov ntsiab lus nyob rau hauv tom qab tsim. Lawv muab cov neeg ua yeeb yaj kiab nrog txoj hauv kev zoo kawg rau txheej txheej zoo li qub lossis txav cov ntsiab lus mus rau hauv ib qho chaw, tsim kom muaj kev paub ntau dua. Qee qhov piv txwv ntawm cov tswv yim ntsuab-screen suav nrog kev sib txuas cov neeg ua yeeb yam nrog keeb kwm ntawm lub ntiaj teb neeg txawv teb chaws lossis ua rau nws zoo li ob qhov xwm txheej sib txawv raug tua tib lub sijhawm.

Hauv kev ua yeeb yaj kiab thiab TV, cov tshuaj ntsuam ntsuab feem ntau yog siv los tsim cov teebmeem uas ib txwm xav tau kev teeb tsa loj ntawm qhov chaw - xws li kev taug kev thoob ntiaj teb los ntawm ntau qhov chaw, kev ua yeeb yam cuam tshuam nrog cov stunts loj, lossis tseem tsim cov toj roob hauv pes tshiab tawm ntawm huab cua nyias. Txhawm rau ua tiav cov teebmeem no, cov neeg ua yeeb yam raug kaw cais tawm ntawm lub tank ntsuab backdrop thaum lub koob yees duab tseem nyob ruaj khov nrhiav qhov chaw cov ntaub ntawv los ntawm cov cim cim nyob ib puag ncig lawv. Qhov no tso cai rau cov keeb kwm yav dhau los ntawm txhua qhov kev txhaj tshuaj tau hloov pauv thaum lub sijhawm tom qab tsim khoom yam tsis muaj kev cuam tshuam kev ncaj ncees ntawm txhua qhov kev ua yeeb yaj kiab uas tau ntes ntawm qhov teeb tsa.

Ntxiv rau qhov tso cai rau cov teebmeem tshwj xeeb ua ntu zus siv computer generated duab (CGI), cov txheej txheem no tseem tuaj yeem khaws cov teeb pom kev zoo siv thaum tua cov duab nyob thiab siv lawv thaum muab tso rau hauv cov khoom sib cais uas tau sau tseg cais tawm ntawm nws. Qhov no tuaj yeem tsim cov txiaj ntsig zoo kawg yog tias ua tiav thiab tso cai rau yav dhau los ua tsis tau zoo los tsim nrog cov txheeb ze yooj yim.

photography

Ntsuab tshuaj ntsuam yog ib qho cuab yeej tseem ceeb rau cov kws yees duab tab tom nrhiav los tsim cov duab tshwj xeeb, zoo nkauj yam tsis muaj kev siv nyiaj thiab sij hawm cog lus ntawm qhov chaw tua. Thaum cov ntxaij vab tshaus ntsuab feem ntau yog siv los ua yeeb yaj kiab thiab TV, lawv kuj yog cov cuab yeej siv tau zoo rau cov kws yees duab. Ntsuab tshuaj ntsuam yees duab Kev siv cov khoom ntsuab lossis xiav tom qab, feem ntau pleev xim ncaj qha rau ntawm phab ntsa, uas tso cai rau tus kws yees duab hloov keeb kwm yav dhau los nrog cov duab ntawm lawv xaiv hauv kev tsim khoom tom qab.

Qhov txiaj ntsig tseem ceeb ntawm kev siv lub vijtsam ntsuab yog tias ib tus tuaj yeem hloov keeb kwm sai sai yam tsis tas yuav txav mus los ntawm ib qho chaw mus rau lwm qhov. Qhov no txuag nyiaj nrog rau lub sijhawm thiab kev siv zog thaum tua cov duab uas xav tau ntau lossis hloov cov duab. Kev yees duab hauv chroma yuam sij (ntsuab los yog xiav) muaj kev kho kom haum xeeb zoo nrog ntau qhov kev xaiv tsim. Nws kuj tseem txhim kho cov kev xaiv sib xyaw thaum tua tawm tsam cov keeb kwm dawb lossis keeb kwm yav dhau los nrog cov duab ntxoov ntxoo nyuaj.

Kev thaij duab ntsuab ntsuab yog siv dav hauv kev yees duab zam, cov khoom txhaj tshuaj thiab kev ua haujlwm portrait, tso cai rau cov kws yees duab tsim cov duab zoo nkauj uas tsis tas yuav cia siab rau cov khoom siv, cov qauv thiab cov khoom siv ntxiv xws li lub tsev pheeb suab thiab cov reflectors. Cov ntxaij vab tshaus ntsuab yuav tsum tau ceev faj teeb pom kev zoo rau cov txiaj ntsig zoo yog li cov kws tshaj lij kev paub txog cov tswv yim teeb pom kev zoo yuav tsum tau ua kom tau zoo tshaj plaws.

virtual kev muaj tiag

Ntsuab tshuaj ntsuam yog qhov pom kev pom qhov twg ib feem ntawm cov duab tom qab (qhov no yog lub vijtsam ntsuab) raug tshem tawm thiab hloov nrog lwm daim duab. Nws tau siv hauv cov yeeb yaj kiab, kev tshaj tawm, thiab TV txij li xyoo 1950.

Kev muaj tiag virtual tuaj yeem tau txais txiaj ntsig los ntawm kev siv cov ntxaij vab tshaus ntsuab los tsim kev paub ntau dua. Thaum siv ua ke nrog 3D lub koob yees duab taug qab thiab sib sau software, cov neeg ua yeeb yaj kiab tam sim no muaj peev xwm tsim cov kev sib tham sib tham uas xav tau ntau dua. muaj tseeb dua li yav tas los. Nrog kev siv cov tshuaj ntsuab ntsuab, cov neeg ua yeeb yaj kiab muaj peev xwm ntxiv cov ntsiab lus virtual xws li lub thawv ntuj, CG khoom, cov khoom ib puag ncig thiab ntau ntxiv rau hauv lawv qhov chaw. Tsis tas li ntawd, thaum nws los txog rau kev ua neej nyob augmented kev muaj tiag tej yaam num rau mobile los yog sib tham sib daim ntawv thov xws li video games, virtual reality muaj ib tug real-time kev nyob rau hauv kev sib cuam tshuam scenarios enabled los ntawm ntsuab cov ntxaij vab tshaus uas muab tej yam ntuj tso thav ntawv rau cov khoom siv digital tsim los ntawm.

Thaum txiav txim siab seb hom "ntsuab tshuaj ntsuam" thev naus laus zis yuav zoo tshaj plaws rau VR qhov project koj yuav tsum xav txog yuav ua li cas yooj yim manipulated nws yuav yog tom qab tsim khoom lossis thaum lub sijhawm ua yeeb yaj kiab. Cov yam ntxwv xws li:

• xim hloov calibration raug yuav tsum tau coj mus rau hauv kev txiav txim siab thaum xaiv cov xim uas tsim nyog kom txhua yam teeb meem yuav raug zam kom tiav thaum lub sijhawm ua haujlwm tom qab ntau lawm.

Khoom Siv Yuav Tsum Tau

Ntsuab tshuaj ntsuam yog ib tug tshiab video editing txheej txheem uas siv chroma tseem ceeb technology tshem tawm cov keeb kwm yav dhau ntawm ib daim vis dis aus thiab hloov nws nrog lwm cov duab lossis yees duab. Yuav kom ua tiav cov txiaj ntsig no, yuav tsum muaj ntau yam khoom siv.

cov cov khoom siv tseem ceeb tshaj plaws yog xim ntsuab lossis xiav tom qab, uas yog siv los tsim cov nyhuv chroma. Lwm yam tseem ceeb muaj xws li:

• Lub koob yees duab digital
• Ib tug chroma key software program
• Lub computer

Cia peb saib ntawm lawv txhua tus hauv kev nthuav dav.

lub koob yees duab

Thaum tua ib qho screen ntsuab, siv lub koob yees duab zoo yog Tseem ceeb heev. Paub seb hom koob yees duab twg siv nyob rau hauv ib qho xwm txheej tuaj yeem ua kom yuam kev. Feem ntau hais lus, xaiv hom koob yees duab twg los tua thaum ua haujlwm nrog cov ntxaij vab tshaus ntsuab nyob ntawm koj qhov project tshwj xeeb xav tau.

Yog hais tias koj tab tom nrhiav rau ib tug ntau cinematic saib, ces nws boils mus rau ob lub ntsiab kev xaiv: zaj duab xis or cov koob yees duab. Cov koob yees duab digital feem ntau suav hais tias yog qhov kev xaiv zoo tshaj plaws vim lawv muab cov duab daws teeb meem siab dua thiab tuaj yeem tsim cov duab uas muaj qhov pom tseeb dua thiab xim raug. Cov koob yees duab zaj duab xis muaj cov yam ntxwv sib txawv xws li grainy visuals los yog cov organic "saib" tab sis xav tau kev ua haujlwm ntau dua hauv kev tsim khoom tom qab kom pom cov txiaj ntsig zoo nrog lub vijtsam ntsuab.

Nyob ntawm koj cov peev nyiaj, ob qho tib si qib kev siv cov koob yees duab digital thiab semi-professional digital koob yees duab yuav ua tau zoo kawg nkaus thaum nws los ua cov duab zoo nrog lub vijtsam ntsuab. Nws yog ib qho tseem ceeb uas yuav tau xaiv lub koob yees duab uas tso cai rau koj los kho nws cov chaw kom koj tuaj yeem nyob twj ywm hauv kev tswj hwm thaum tua koj cov duab video nrog lub vijtsam ntsuab tom qab.

Tsis tas li ntawd, nws yog ib qho tseem ceeb sib npaug rau kev saib xyuas lens ntawm lub koob yees duab koj txiav txim siab rau - lub kaum sab xis dav yuav ua haujlwm zoo dua hauv qee qhov xwm txheej es tsis txhob siv lub koob yees duab telephoto nyob ntawm seb koj lub vijtsam ntsuab loj npaum li cas thiab hom kev sib xyaw uas koj npaj rau kev koom ua ke rau hauv koj qhov kev txhaj tshuaj thaum kho tom qab kab.

Khoos phib tawj

Siv lub vijtsam ntsuab lossis chroma qhov tseem ceeb backdrop yuav tsum muaj cov khoom siv thiab chaw tsim nyog.

Qhov tsawg kawg nkaus, txhawm rau tsim kom ntseeg tau chroma cov teebmeem tseem ceeb hauv kev tsim khoom tom qab, koj xav tau lub khoos phis tawj los khiav software rau. Nyob ntawm seb qhov nyuaj npaum li cas koj chroma cov teebmeem tseem ceeb yuav yog, nrog rau kev kho video / tshaj tawm cov software uas koj yuav siv, koj yuav xav tau lub khoos phis tawj muaj zog (lossis laptop) nrog cov duab ua haujlwm zoo.

cov graphics card tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev suav thaum nws los txog rau kos cov kab thiab npog cov xim uas xav tau kom raug raws sijhawm. Nyob ntawm seb koj lub vijtsam ntsuab loj npaum li cas, koj yuav xav tau ntau lub khoos phis tawj los saib cov duab ib txhij lossis ua cov kev hloov kho nyuaj hauv lub sijhawm luv luv. Tseem muaj cov software tshwj xeeb tshwj xeeb rau kev siv nrog cov ntxaij vab tshaus ntsuab uas muaj-txawm tias cov no yuav xav tau cov tshuab kim dua li cov txheej txheem kho video zoo li Tsev av Premiere or Final Cut Pro X yuav (uas ironically tsis muab cov neeg siv cov cuab yeej built-in rau chroma keying).

software

Thaum shooting nrog a ntsuab npo, nws yog ib qho tseem ceeb uas yuav tsum tau siv tshwj xeeb software thiab plugins kom ua tiav koj cov duab ntsuab ntsuab. Ntau haib, non-linear editing software programs nyiam Tom qab los ntawm Adobe or Avid Media Composer raug pom zoo, tshwj xeeb tshaj yog rau cov pib tshiab, vim qhov nyuaj ntawm cov txheej txheem. Nyob ntawm qhov xav tau ntawm koj qhov project, koj tuaj yeem siv tsawg dua software xws li Windows Movie Maker.

Green screen compositing tuaj yeem ua tiav yam tsis muaj plugins los ntawm keyframing lub qhov ncauj qhov ntswg thiab pleev xim rau ntawm tes, tab sis muaj cov plugins muaj zog uas ua kom cov txheej txheem no yooj yim thiab tso cai rau nws ua tau yooj yim. Nrov plugins uas siv hauv kev tshuaj ntsuam ntsuab suav nrog Re: Vision VFX Primatte Keyer 6 thiab Liab Giant's Chromatic Displacement.

Software kuj tseem tuaj yeem txo cov sij hawm xav tau hauv kev tsim khoom tom qab ua haujlwm nrog cov ntxaij vab tshaus ntsuab. Nco ntsoov ua koj cov kev tshawb fawb thiab paub txog cov kev xaiv muaj ua ntej koj pib tua kom koj thiaj li paub tseeb tias koj muaj txhua yam tsim nyog rau cov duab zoo hauv koj cov khoom tiav!

teeb pom kev zoo

Thaum ua haujlwm nrog lub vijtsam ntsuab, lub teeb pom kev zoo yog qhov tseem ceeb thiab muaj cov cuab yeej zoo ua rau muaj qhov sib txawv ntawm qhov zoo ntawm koj cov txiaj ntsig. Teeb pom kev zoo yog qhov ncaj ncaj, tsuav yog koj npaj kom zoo.

Peb hom teeb pom kev zoo yog lub teeb tseem ceeb, sau lub teeb thiab backlight. Koj yuav tsum paub txog tag nrho peb thaum teeb tsa rau kev tshuaj ntsuam ntsuab.

• Lub Teeb Tseem Ceeb: Lub teeb tseem ceeb yog lub teeb muaj zog tshaj plaws siv, nws muab feem ntau ntawm cov teeb pom kev zoo rau koj qhov kev txhaj tshuaj. Qhov no tuaj yeem yog lub teeb ci vaj huam sib luag LED lossis lub teeb kub ib txwm - thaum tua ntawm lub vijtsam ntsuab sim kom phim koj lub teeb tseem ceeb rau tungsten xim kub (3200K).
• Sau Teeb: Lub teeb puv pab tsim kom muaj teeb pom kev zoo txawm tias nyob rau hauv cov cheeb tsam uas tej zaum yuav raug ntxoov ntxoo los ntawm lub qhov tseem ceeb los yog lub teeb rov qab, lawv yuav tsum tau muab tso rau ntawm lub teeb tseem ceeb thiab feem ntau tsis tshaj 2 nres qis dua qhov tseem ceeb-lub teeb kom cov duab ntxoov ntxoo tsis tsim. Yog tias siv cov teeb kub kub ib txwm sim siv yam tsawg 2x 1k cov cuab yeej lossis siab dua nyob ntawm kev txwv nyiaj txiag.
• Backlight: Lub teeb nraub qaum ntxiv qhov tob thiab qhov ntev rau koj cov duab thiab yuav tsum tau ntxiv (tsis yog overpower) koj qhov kev nthuav dav / teeb pom kev zoo tag nrho - tsom rau 1 nres lub teeb ci dua li koj Lub Teeb Pom Kev yog tso ncaj qha rau tom qab txuj ci. Qhov no kuj tseem tuaj yeem yog vaj huam sib luag LED lossis lub teeb kub ib txwm - thaum tua ntawm lub vijtsam ntsuab sim ua kom phim koj lub teeb rov qab rau tungsten xim kub (3200K).

Lub tswv yim siv Green Screen

Green screen technology yog ib qho cuab yeej siv tau zoo hauv kev ua yeeb yaj kiab, tsim khoom hauv TV, thiab thaij duab. Nws tuaj yeem siv tau hloov lub keeb kwm yav dhau los yog tsim cov duab sib xyaw los ntawm kev sib txuas ob lossis ntau cov duab ua ke.

Yuav kom ua tau ntau tshaj ntawm ntsuab screen txheej txheem, muaj ob peb lub tswv yim thiab tricks uas yuav tsum tau ua raws li. Hauv kab lus no, peb yuav saib cov lus qhia thiab sib tham Thaum twg thiab yuav siv cov ntxaij vab tshaus ntsuab li cas kom tau txais txiaj ntsig zoo tshaj plaws.

Xaiv lub keeb kwm yav dhau

Thaum nws tawm los siv ntsuab npo, qhov tseem ceeb tshaj plaws yog keeb kwm yav dhau koj xaiv. Nws yog ib qho tseem ceeb los xaiv txoj cai ntxoov ntxoo ntawm ntsuab thiab muaj txawm teeb pom kev zoo nyob rau hauv ib tug ntau yam ntawm 5-10 f-nres. Qhov ntau txawm tias koj lub teeb pom kev zoo, qhov zoo dua koj cov txiaj ntsig yuav yog thaum koj tsiv mus rau hloov cov txheej txheem keeb kwm yav dhau los nrog cov digital. Nws yog qhov zoo tshaj plaws los siv lub koob yees duab digital zoo uas siv tau yooj yim thiab tso cai rau koj tswj hwm ob qho tib si tsom thiab teeb pom kev zoo.

Qhov kev xaiv backdrop yuav tsum tau txuas ntxiv mus dhau qhov uas tuaj yeem pom hauv video ncej. Qhov no ua kom tsis muaj cov ntsiab lus tsis xav tau suav nrog uas tsis tuaj yeem pom ua ntej pib tua. Thaum tab tom nrhiav cov duab hauv qab, xyuas kom lawv tsis muaj duab ntxoo, wrinkles lossis lwm yam khoom uas yuav cuam tshuam rau kev ua haujlwm lossis tsim kev tsis meej pem thaum kho tom qab. Ib qho matte tiav yuav ua rau nws yooj yim dua rau koj los kho cov cheeb tsam uas tsis tshua muaj tshwm sim los yog overexposed hauv kev tsim khoom tom qab thiab pab xyuas kom huv cov yuam sij kom yooj yim chroma keying txheej txheem ib yam nkaus!

Teeb lub teeb ntsuab kom raug

Txhawm rau pib nrog lub vijtsam ntsuab, koj yuav tsum paub tseeb tias koj muaj qhov tsim nyog teeb pom kev zoo. Kev teeb pom kev zoo rau lub vijtsam ntsuab yog qhov tseem ceeb los xyuas kom meej tias koj qhov kev kawm yog qhov sib npaug thiab pom qhov sib txawv ntawm keeb kwm yav dhau. Nws tsim nyog nqis peev rau qhov zoo lub teeb tseem ceeb thiab backlight or rim teeb yog tias ua tau.

cov lub teeb tseem ceeb yuav tsum tau muab tso rau me ntsis saum koj qhov kev kawm thiab ntawm 45-degree lub kaum sab xis los ntawm kev coj ntawm lub koob yees duab. Cov backlight or rim teeb yuav tsum tau teem rau tom qab cov ntsiab lus thiab qhia rau lawv backside; qhov no yuav pab lawv sawv tawm ntau dua tiv thaiv lub vijtsam ntsuab. Thaum kawg, puv teeb tau teeb tsa kom txo tau qhov hnyav ntawm qhov ntxoov ntxoo, tab sis lawv tsis yog qhov tseem ceeb.

Nws yog ib qho tseem ceeb kom paub tseeb tias koj lub teeb tsis txeej ntawm koj lub vijtsam ntsuab nws tus kheej, txawm li cas los xij, vim tias thaj chaw ntxoov ntxoo tuaj yeem tsim qhov tsaus ntuj ntawm koj cov yeeb yaj kiab. Khaws lub qhov muag ntawm qhov kaj ntawm koj qhov kev kawm thiab keeb kwm yav dhau los thaum teeb pom kev zoo - txhua qhov sib txawv tuaj yeem tsim teeb meem sib piv thaum digitally tshem tawm cov backdrop!

Siv lub koob yees duab zoo

Siv lub lub koob yees duab zoo yuav tsis tsuas yog pab tsim kom muaj cov duab zoo dua nrog qhov tob ntawm qhov chaw zoo dua, tab sis nws tseem yuav txo qis cov haujlwm tom qab kev tsim khoom uas koj yuav tsum tau ua. Tom qab kev tsim khoom yog tsim nyog los ua kom zoo dua cov duab ntsuab ntsuab, thiab muaj lub koob yees duab zoo yuav pab txo qis lub sijhawm nws siv los kho koj cov duab zoo.

Sim nrhiav cov koob yees duab uas muaj ntau dua megapixels thiab tuaj nrog software uas tuaj yeem pab txhim kho cov yam ntxwv zoo ib yam li qhov sib piv lossis qhov saturation. Nws tseem ceeb heev uas yuav tau nrhiav cov koob yees duab uas muaj dav dynamic ntau muaj peev xwm, vim qhov no yuav pab ua kom koj cov kev txhaj tshuaj zoo li qub thiab tsis tiaj tus.

Thaum kawg sim muaj ntau txoj kev teeb pom kev zoo muaj nyob rau ntawm qhov teeb tsa vim qhov no tuaj yeem hloov qhov kev xav ntawm daim duab loj heev-koj tuaj yeem xav tau ntau theem ntawm lub teeb nyob ntawm seb hom duab koj xav tau.

Thaum siv cov ntxaij vab tshaus ntsuab rau VFX, txoj cai zoo ntawm tus ntiv tes xoo yog tias koj yuav tsum ib txwm ua yuam kev ntawm ib sab ntawm kev ceev faj thiab ceev faj ntxiv thaum teeb tsa koj cov kev txhaj tshuaj kom tau txais kev ua tau zoo tshaj plaws los ntawm lawv.

Siv lub tripod rau stability

Feem ntau cov tshuaj ntsuab ntsuab yuav tsum muaj kev ruaj ntseg zoo. Qhov zoo tshaj plaws koj yuav tsum siv lub tripod thiab xyuas kom tseeb tias koj qhov kev txhaj tshuaj raug kaw tsis muaj zog. Nws yog ib qho tseem ceeb uas yuav tsum khaws cov koob txhaj tshuaj kom ruaj khov yog tias koj siv lawv li lawv yuav nyuaj dua los ntxuav yog tias lawv muaj tshee los yog txav mus los. Koj tuaj yeem siv lub dolly lossis jib caj npab rau kev txav mus los, tab sis nco ntsoov tias nws yog ua haujlwm zoo thiab hais tias lub koob yees duab yog kaw tseg ua ntej koj pib ua yeeb yaj kiab.

Siv cov microphones cais: Siv ob lub microphones - ib qho rau cov txuj ci thiab ib qho rau lub suab nrov hauv chav - pab kom tsis txhob muaj suab nrov xws li cua txias thiab khiav tawm ntawm lub suab nrov uas tau siv rau tom qab lub hom phiaj. Ob lub microphones tsim ob qho tib si ambient khiav as Well as a kev sib tham khiav uas yuav muab cov suab kho suab nrog qee qhov yooj yim hauv kev tsim khoom tom qab tsim cov suab paj nruag seamless.

Tua ntawm ntau qhov kev ncua deb: Nws yog ib qho tseem ceeb uas yuav tau txhaj ntau yam ntawm sib txawv deb thaum tua cov ntxaij vab tshaus ntsuab raws li qhov no yuav muab koj tus editor ntau txoj kev xaiv thaum piecing ua ke qhov kawg txhaj tshuaj. Muaj kev sib raug zoo thiab kev txhaj tshuaj dav dav yog qhov tseem ceeb rau kev muab kev hloov pauv tiag tiag ntawm cov keeb kwm yav dhau los tom qab kev tsim khoom, yog li xyuas kom koj muaj ntau ntau. footage txhaj ntawm qhov sib txawv.

Khaws teeb pom kev zoo ib yam: Teeb pom kev zoo yuav tsum yog zoo ib yam thoob plaws koj qhov kev txiav txim rau cov kws kos duab digital matte (DMAs) ua haujlwm tau zoo thaum muab cov keeb kwm yav dhau los rau hauv koj cov duab hauv kev tsim khoom tom qab. Nws yog qhov zoo tshaj plaws xyaum ua kaw txhua qhov chaw teeb pom kev zoo thaum tua thiab xyuas kom meej tias lawv yog tusyees faib hla tag nrho cov duab cheeb tsam es tsis yog qhov chaw uas koj lub peev xwm nyob rau hauv tus ncej. Txoj kev no, DMAs tuaj yeem ntsuas kev ntsuas ntawm ib feem ntawm tus ncej yog tias lawv xav tau los tswj cov teeb pom kev zoo thaum lawv cov txheej txheem sib xyaw.

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Kev siv ntawm a ntsuab npo muab filmmakers thiab videographers nrog lub ntiaj teb no ntawm kev xaiv thaum tsim cov ntsiab lus. Txawm hais tias siv cov yeeb yaj kiab ua yeeb yaj kiab lossis cov yeeb yaj kiab animated, lub hom phiaj kawg yog txhawm rau ntes cov neeg tuaj saib thiab tsim cov lus piav qhia. Los ntawm kev ua raws li kev ua yeeb yam zoo thiab siv cov tswv yim sib xyaw tshiab, kev tsim cov tshuaj ntsuab ntsuab tuaj yeem muab cov neeg saib nrog kev koom tes nrog lub neej thiab xav tsis thoob.

Siv lub vijtsam ntsuab yuav tsum tau npaj ua ntej tsim khoom kom thiaj li siv tau nws qhov zoo. Nrog rau cov cuab yeej tsim nyog, kev coj ua muaj tswv yim, thiab cov txheej txheem tom qab tsim tawm, cov neeg ua yeeb yaj kiab tuaj yeem sib xyaw lawv cov txuj ci los tsim cov yeeb yaj kiab thiab cov yeeb yaj kiab uas tawm tsam los ntawm kev sib tw. Los ntawm kev tsom mus rau cov tswv yim teeb pom kev zoo, nkag siab txog kev tua phom, lossis tso siab rau cov cuab yeej digital thiab matte painting tricks, maj mam dluab yog tsim nyob ib ncig ntawm lub tswv yim rau hauv scenes uas captivate cov neeg tuaj saib thoob ntiaj teb.

Nrog rau tag nrho cov hais saum toj no nws yog amazing dab tsi koj yuav ua tau yog hais tias koj siv lub hwj chim ntawm zaub ntsuab!

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.