Photo-realism yog ib lub hom phiaj ntawm ntau tus kws ua yeeb yam CG, thiab nws kuj yog ib qho nyuaj tshaj plaws kom ua tiav. Txawm hais tias koj yog tus tshiab rau 3D computer graphics, txawm li cas los xij, niaj hnub no cov cuab yeej thiab cov txheej txheem kev ua haujlwm ua rau kev yees duab-kev muaj tiag heev.
Ntawm no yog yim txoj kev los pab koj mus txog qhov ntawd:
Nyob zoo ib tsoom niam txiv kwv tij neej tsas sawv daws
Tsis nco qab bevel lossis chamfer npoo yog ib qho yuam kev feem ntau tau ua los ntawm kev pib 3D cov kws kos duab. Muaj yuav luag tsis muaj rab chais-ntse npoo nyob rau hauv qhov xwm txheej, thiab txawm tias feem ntau cov khoom tsim los ntawm cov txiv neej muaj qhov sib npaug me ntsis uas ob qhov chaw tawm tsam sib ntsib. Beveling pab nthuav tawm cov ntsiab lus, thiab muag qhov tseeb ntawm koj tus qauv los ntawm kev tso cov npoo kom zoo ntes cov ntsiab lus ntawm koj cov teeb pom kev zoo.
Siv lub bevel (los yog chamfer cuab tam hauv 3ds Max) yog ib qho ntawm thawj yam koj yuav tsum kawm ua tus qauv. Yog tias koj tshiab txaus rau 3D uas koj tsis paub yuav ua li cas los tsim lub beveled ntug, koj yuav tau txais txiaj ntsig tiag tiag los ntawm kev qhia qhia zoo lossis txawm tias muaj kev qhia ua npe.
Learn to Use Linear Workflow
Txawm tias txoj haujlwm ua haujlwm tau nyob ib puag ncig tau ntau xyoo, nws tseem yog lub tswv yim tsis meej pem thiab nyuaj rau cov pib tshiab.
Qhov kev xav tau rau kev ua haujlwm tawm haujlwm tseem ceeb los ntawm qhov tseeb tias koj lub monitor qhia cov duab hauv qhov chaw sib txawv xim (sRGB) dua li qhov tso tawm los ntawm koj lub cav ua haujlwm (linear). Txhawm rau tiv thaiv qhov no, cov kws ua yeeb yam yuav tsum ua cov kauj ruam tsim nyog los siv gamma kho kom raug.
Tab sis txoj haujlwm ua haujlwm tau zoo mus deb dhau qhov kev kho gamma yooj yim - nws yog txhua yam hais txog kev tshem tawm cov txheej txheem qub thiab kev ua haujlwm (feem ntau yog raws li kev ua lej dhau los), thiab txav mus rau qhov tseeb ntawm lub cev raws li kev daws teeb meem.
Muaj ntau yam hais txog kev ua haujlwm tawm, thiab ua tsaug uas nws tau tham tag nrho ob peb xyoos dhau los. Linear Workflow thiab Gamma yog qhov chaw muaj txiaj ntsig rau kev kawm txoj kev xav tom qab cov txheej txheem thiab txuas mus rau ob peb qhov chaw, yog li muaj kev nyeem ntawv ntau kom ua tiav. Linear Workflow hauv Maya 2012 yog chav kawm Digital Tutors uas cuam tshuam tshwj xeeb nrog cov haujlwm ua haujlwm hauv Maya 2012.
Siv IES Lub Teeb Profiles rau Photometric Teeb pom kev zoo
Ib sab ntawm kev nce ntawm kev ua haujlwm tawm, 3D cov kws ua yeeb yam (tshwj xeeb yog cov neeg ua haujlwm hauv kev pom kev tsim vaj tsev) tau pib siv cov ntaub ntawv hu ua IES lub teeb profiles rau ntau qhov tseeb ua raws li lub ntiaj teb teeb pom kev zoo.
IES cov ntaub ntawv yog thawj zaug tsim los ntawm cov tuam txhab xws li General Electric ua ib txoj hauv kev los txheeb xyuas cov ntaub ntawv teeb pom kev zoo photometric. Vim tias IES lub teeb pom kev zoo muaj cov ntaub ntawv photometric tseeb txog lub teeb pom kev zoo, luminance, thiab poob tawm. 3D cov neeg tsim khoom tau txeeb lub sijhawm ntxiv IES kev txhawb nqa hauv feem ntau cov pob 3D loj.
Vim li cas siv sij hawm sim ua kom pom lub ntiaj teb tiag tiag thaum koj tuaj yeem siv IES profile thiab muaj qhov tiag?
CG Arena muaj qee cov duab zoo los muab koj lub tswv yim zoo li cas IES lub teeb profile zoo li.
Siv qhov tob ntawm teb
Qhov tob ntawm qhov chaw (qhov muag plooj) cov teebmeem yog ib txoj hauv kev yooj yim tshaj plaws los ua kom qhov tseeb ntawm koj qhov kev tso tawm vim nws yog ib yam uas peb koom nrog kev yees duab hauv lub neej tiag tiag.
Siv qhov tob tob ntawm thaj chaw pab cais koj cov ncauj lus, thiab tuaj yeem txhim kho koj cov kev sib xyaw los ntawm kev dhia thiab ciam teb thaum nws siv rau hauv qhov tsim nyog. Cov teebmeem tob tuaj yeem suav tau ntawm lub sijhawm ua haujlwm los ntawm koj lub pob 3D lossis siv rau hauv kev tsim khoom tom qab siv z-qhov tob thiab qhov muag plooj hauv Photoshop. Kev siv cov nyhuv hauv kev tshaj tawm yog nyob deb ntawm txoj kev nrawm dua, txawm li cas los xij, teeb tsa qhov tob ntawm thaj chaw hauv koj thawj app muab rau koj tswj ntau dua cov nyhuv.
Ntxiv Chromatic Abberation
Lub npe suab nyuaj, tab sis ntxiv chromatic aberration rau koj cov renders yog tej zaum cov txheej txheem yooj yim tshaj plaws ntawm daim ntawv teev npe no.
Chromatic aberration tshwm sim hauv lub ntiaj teb kev yees duab tiag tiag thaum lub lens tsis ua tiav txhua qhov xim ntawm tib qhov sib txuas. Qhov tshwm sim yog tshwm sim raws li "xim fringing," qhov twg qhov sib txawv ntawm cov npoo siab qhia qhov hloov maj mam liab lossis xiav.
Vim tias chromatic aberration tsis tshwm sim hauv CG teeb pom kev zoo, 3D cov kws kos duab tau tsim txoj hauv kev los fake qhov tshwm sim los ntawm offsetting liab thiab xiav channel ntawm ib tug render los ntawm ib pixel los yog ob nyob rau hauv Photoshop
Chromatic aberration tuaj yeem ntxiv qhov tseeb rau qhov ua, tab sis nws tuaj yeem cuam tshuam los ntawm ib qho thaum cov nyhuv dhau lawm. Tsis txhob ntshai sim nws, tab sis nco ntsoov tias kev hloov maj mam yog koj tus phooj ywg zoo tshaj.
Siv Specular Maps
Cov kws ua yeeb yam feem ntau kawm siv cov duab qhia tshwj xeeb zoo nkauj thaum ntxov, tab sis nws yeej lees paub qhov hais rau txhua tus uas tsis tau nyob hauv nkoj.
Daim duab qhia tshwj xeeb qhia koj lub cav ua haujlwm qhov twg ntawm koj tus qauv yuav tsum muaj qhov tshwj xeeb siab (glossiness) thiab qhov twg yuav tsum muaj ntau dua. Kev siv cov duab qhia tshwj xeeb nce qhov tseeb vim tias cia peb fim nws - feem ntau cov khoom hauv qhov xwm txheej tsis pom qhov zoo nkauj, tab sis thaum koj tawm hauv daim ntawv qhia specular tawm, qhov ntawd yog qhov koj tus qauv yuav ua.
Txawm tias cov khoom uas muaj qhov sib xws (glazed ceramics, polished hlau), koj yuav tsum tseem siv daim ntawv qhia tshwj xeeb los pab coj tawm qhov tsis sib xws ntawm khawb, dings, thiab dents.
Grunge It Up
Koj tsis pom "kev ua yuam kev ntawm kev ua tiav" ntau npaum li koj tau ua thaum ntxov ntawm CG, tab sis rau cov ntawm koj uas xav tau kev ceeb toom: tsis txhob ntshai ntxiv qee qhov av thiab grit rau koj cov qauv thiab textures.
Cov khoom hauv ntiaj teb feem ntau tsis huv thiab zoo nkauj, yog li tawm hauv koj cov qauv li ntawd tuaj yeem ua rau tub nkeeg thiab yuav luag ua rau koj qhov kev thov rau kev yees duab-qhov tseeb. Nws tsis yog yuav tsum yog cov ntsiab lus ntawm cov ntaub ntawv ib leeg - sim ntxiv cov kab nrib pleb loj thiab kev puas tsuaj rau qee yam ntawm koj cov qauv, tshwj xeeb tshaj yog tias koj ua haujlwm ntawm FPS style game ib puag ncig.
Khaws lub tswv yim ntawm qhov tsis zoo hauv siab thaum koj tab tom populating koj scenes ib yam nkaus. Tshwj tsis yog tias koj tab tom mus rau qhov zoo nkauj heev architectural showroom hom render, tawg qee qhov khoom ib txwm muaj thoob plaws hauv koj qhov xwm txheej kom pom qhov chaw nyob hauv.
Ntxiv Asymetry
Kev muaj peev xwm tig rau qhov sib luag thaum ua qauv lossis kos duab kos duab yog qhov khoom kim heev - txhais tau hais tias ua qauv peb tsuas yog ua haujlwm ib nrab xwb thiab tsis tas yuav txhawj xeeb peb tus kheej dhau ib lub qhov muag loj dua li lwm tus, los yog ua kom lub puab tsaig sab laug nrog rau sab xis (koj paub, cov teeb meem pesky uas teeb meem cov neeg pleev kob thiab cov sculptors).
Tab sis thaum nws los txog rau lub sijhawm los ua qhov kev nthuav dav kawg thiab ua rau koj tus qauv, nws yog ib lub tswv yim zoo los tua qhov sib luag thiab ntxiv qee yam asymmetric variance rau koj tus cwj pwm.
Txawm hais tias nws yog nyob rau hauv lub pose, costume, los yog cov ntaub ntawv nthuav dav, asymmetry yuav ua rau koj cov qauv ntau lifelike, thiab muaj feem yuav koj yuav xaus nrog ib tug ntau dynamic thiab ua tau zoo kawg daim duab.
