LUTs: Chii Chiri Muvara Grading?

by kim Updated: June 27, 2022

Matafura ekutarisa (LUTs) chishandiso chine simba mukati ruvara grading uye vhidhiyo post-kugadzirwa. Ivo vanokutendera kuti ugadzire yakasarudzika uye yakanaka zvinoonekwa nekukurumidza uye zviri nyore, kuti iwe ugone kushamisa vateereri vako nemugumisiro unotaridzika wehunyanzvi.

Muchikamu chino, tichaongorora zvinyorwa zve LUTs, mashandire avanoita, zvavanogona kukuitira, uye kuti ungazvishandisa sei zvakanyanya muzvirongwa zvako.

• Nheyo dze LUTs
• sei LUTs basa
• chii LUTs anogona kukuitira
• Kuita zvakanyanya LUTs mumapurojekiti ako

Tsanangudzo yeLUTs

Matafura ekutarisa (LUTs) chinhu chakakosha chekugadzira mavara uye kugadzirisa mufananidzo. A LUT ichokwadi tafura yedata inopa chaiwo mavara kuraira kwevhidhiyo kubuda kana editing masisitimu. Maitiro ekushandisa LUT anonzi "3D LUT” iyo inomiririra tafura yekutarisa-mativi matatu. Inobvumira mufananidzo kana vhidhiyo kuti igadziriswe mu tonality, mutsauko, saturation, pakati pemamwe akawanda ma paramita kuitira kuti ienderane neimwe kutaridzika kana giredhi.

A 3D LUT chikamu chakakosha cheiyo video editing process, kunyanya kana nyanzvi yekugadzirisa ruvara uye nemazvo pazviratidziro zvakawanda zvichidikanwa. Pamusoro peizvi, inogona kuita shanduko dzisinganzwisisiki kumanzwiro akazara emifananidzo ichichengetedza maitiro ayo epakutanga - ichiita kuti ive chimbo chakanakisisa chekugadzira firimu rine stylized rinotarisa pahupamhi hwekuenderana uye huchokwadi. Kazhinji, kune marudzi maviri ekushandisa umo 3D Luts yakashandiswa zvinobudirira - post production uye nhepfenyuro yebrodacasting.

Mukugadzirwa kwemashure, Luts inogona kushandiswa kudzikamisa mavara pamwe neyakajeka tune ganda toni uye ambient mwenje pamapfuti nekukurumidza uye nemazvo. Nenzira iyi vagadziri vemafirimu vanogona kuwana mibairo inowirirana mumaseti akasiyana emafirimu ane chitaera chimwe chichiiswa pachiitiko chega chega zvisinei nenharaunda kana michina inoshandiswa. Zvakare, vagadziri vemafirimu vanogonawo kugadzira yakasarudzika penzura yekudhirowa maitiro pasina yakawandisa kushanda nekubatanidza pre-yakavakwa 3D lut makeup seti nemabasa ekugadzira akadai semavignettes uye hue mashifiti akaiswa pamusoro pavo.

Nhepfenyuro yekutepfenyura inoshandisa nzira dzakasiyana siyana kwete mafirimu akajairwa chete asi kushambadzira zvakare - uko kuve nekutonga kwakawanda pamusoro pemavara kunobatsira kubva kune tekinoroji maonero zvakare maererano nemhando yekunaka. Pano 3dLuts inoita kuti vagadziri vakwanise kuona mavara ega ega papfuti yega yega -kunge ruvara rweganda nezvimwewo, kuve nechokwadi chekuti zvese zvinotepfenyurwa zvinoteedzera kumazinga eindasitiri kuitira kuti vataridzi vaone chete mifananidzo yakarongedzerwa pamasikirini akasiyana anowanikwa zviri nyore pamidziyo yavo ine senge software. DaVinci Resolve15 etc.:

• Post Production
• Nhepfenyuro yeNhepfenyuro
• DaVinci Resolve15

Mashandiro anoita LUTs

Tarisa kumusoro kwematafura (LUTs) chishandiso chinobatsira zvinoshamisa chinoshandiswa mukugadzika kwemavara. Vanobatsira kumisa mavara akasiyana siyana kuitira kuti iyo chaiyo yekuisa iyo yawakaisa muhurongwa ndiyo inobuda kune rimwe divi. LUTs anoshandiswa mune akawanda akasiyana mafambiro ebasa uye mashandisirwo, kubva pakugadzira chaiwo kusvika kune mavara giredhi post-yekugadzira workflows.

Muchikamu chino, tichaongorora sei LUTs basa uye mashandisirwo avanogona kushandiswa kuve nechokwadi chekuenderana mukugadzika kwemavara:

1. sei LUTs dzinoshandiswa mumashure ekugadzirwa kwekufamba kwekufamba
2. Nzira yekushandisa LUTs mukugadzikwa kwemavara
3. Kugadzira sei LUTs kune mamwe mapurojekiti ekuyera mavara

Kunzwisisa Rudzi Nzvimbo

Kuti tinzwisise chii a Tarisa kumusoro Tafura (LUT) iri uye kuti inoshanda sei, zvakakosha kutanga uine nzwisiso yekutanga ye nzvimbo yemavara. Iyo miyero mitatu yenzvimbo yemavara ndeye Hue, Kuchenesa uye Luminance. Hue inoreva chimiro cheruvara chinozivisa hue kana mumvuri waro senge mutsvuku, bhuruu kana girini. Saturation inoreva kusimba kana kujeka kweruvara ukuwo kupenya kunoratidza kuti kupenya kunoratidzika sei pachiratidziro chedu.

Mumifananidzo yedhijitari, pixel yega yega ine ruzivo nezve yayo Hue, Kuchenesa uye Luminance values. Ruzivo urwu runoshandiswa nemapurogiramu ekugadzirisa mavhidhiyo kuratidza mavara chaiwo pamonitor kana terevhizheni. LUTs vanokwanisa kugadzirisa ruzivo urwu kuitira kuti vashandure mamwe maratidziro echifananidzo chose - kazhinji nekugadzirisa imwe kana yakawanda yezviyero zvitatu munzvimbo yeruvara (Hue, Kuchenesa uye Luminance).

A ROPA inogona kushandiswa kune zvinangwa zvakasiyana-siyana - kubva pakushandura chiyero chemusiyano wemufananidzo uye kuzara kusvika pakugadzirisa zvidiki kana shanduko inoshamisa mumatoni chaiwo mukati memufananidzo kuitira kugadzira zvitarisiko zvine stylized. Semuenzaniso, kana ikashandiswa nemazvo, LUTs ita kuti mavara eganda aratidzike akapfava uku uchiwedzera musiyano pakati pemavara akasiyana uye masaturation - ichipa chigadzirwa chekupedzisira manzwiro akasiyana zvachose pane paunotanga nemifananidzo yako yakapfava.

Kunzwisisa Rudzi Gamut

A color gamut (inozivikanwawo senzvimbo yeparameter) inoreva huwandu hwemavara anogona kugadzirwa mukati meimwe mamiriro, senge vhidhiyo kana kudhindwa.

Tarisa kumusoro kwematafura (LUTs) anoshandiswa mugiredhi reruvara kubvumira mushandisi kunyatsomiririra ma spectrum emwenje uye kubuda kutaridzika kwakafanana mune mamwe maratidziro anoenderana kana masisitimu ekufungidzira.

Muchidimbu, A Look Up Table (LUT) ishanduko yemasvomhu inochengetwa senhamba dzenhamba. Inowanzo kunzi 'colour grading', '3D LUTs' kana 'cube LUTs'. Kana kugadzikwa kwemavara neLUTs, vapepeti nenyanzvi vanochengeta nemazvo avo ekuisa uye kuburitsa kukosha, zvichivabvumira kugadzira mufananidzo unotaridzika chaizvo zvisinei nekuti vari kushanda neanalog kana dhijitari tsoka, muFinal Cut Pro X, Adobe Premier. kana DaVinci Resolve.

LUT-yakavakirwa kufambiswa kwebasa inoita kuti kufambiswa kwebasa kuve nekukurumidza, kwakaringana uye kunyatsoita. Nechinyakare color grading workflow, iwe unofanirwa kugadzirisa yega yega kukosha kwemavara zvakasiyana pasina chero chokwadi. NeLUT-based workflow, zviri nyore kuti vapepeti nenyanzvi zvakafanana kushandisa shanduko yeruvara isingachinjiki pamapfuti akawanda nekukurumidza uye nemazvo.

Kuti izvi zviitike zvinobudirira zvinoda kuti midziyo yese ishandise chiyero chemavara akafanana - kazhinji Record 709 asiwo DCI-P3 kune mamwe marudzi emakamera edhijitari - kana uchichengeta ruzivo nezve nzvimbo dzemavara kuitira kuti mavara kubva kune imwe mudziyo anogona kufambiswa nemazvo pamusoro peimwe pasina kukanganisa kunoitika mukutamisa maitiro.

Mhando dzeLUTs

LUTs (Tarisa Kumusoro Matafura) anoshandiswa mukugadzika kwemavara kushandura uye kuwedzera mavhidhiyo. Kuti uite izvi, maLUT anoshandura chaiwo kukosha kweruvara uye kupenya mumufananidzo kugadzira mhedzisiro inodiwa. Kune akasiyana siyana emhando dzeLUT dzakagadzirirwa marudzi akasiyana ekugadzirisa mavara. Ngatitarisei mashoma emhando dzakasiyana dzeLUT uye mashandisiro awo:

• Log ku Linear -Iyi mhando yeLUT inoshandiswa kushandura logarithmic footage kune mutsara ruvara nzvimbo. Izvi zvinowanzo shandiswa pamifananidzo yelogi kubva kumakamera edhijitari.
• utsanzi -Kugadzira LUTs anoshandiswa kuwedzera kutaridzika uye kunzwa kwemifananidzo nekuchinja mavara uye musiyano. Inogona kuwedzera manzwiro emufirimu kumifananidzo.
• Rec709 - Rec709 LUTs anoshandiswa kushandura tsoka kuenda kuRec709 ruvara nzvimbo. Izvi zvinoshandiswa kana tsoka dzichida kuenderana nenzvimbo yeruvara yevhidhiyo yekutarisa.
• Calibration -Calibration LUTs anoshandiswa kuenzanisa tsoka kune imwe nzvimbo yemavara. Izvi zvinoshandiswa kuwana yunifomu kutaridzika kumarudzi akasiyana-siyana emifananidzo.

Log LUTs

Log LUTs matafura ekutarisa-mavara anobvumira vhidhiyo nemifananidzo vapepeti kuti vaenderane nemifananidzo kubva kumakamera akasiyana. Izvi zvinovimbisa kurongeka kwemavara uye kuenderana pakati pemakamera ane akasiyana mavara gamuts kana processors. Log LUTs anoshandiswawo kugadzira stylized toning, kazhinji ine cinematic kutaridzika.

Paunenge uchishandisa log LUTs, zvakakosha kuti uzviise nemazvo, nekuti ivo havazo "gadzirisa" nyaya dzeiyo isina kupfurwa tsoka. Log-LUTs anowanzo shandiswa pakupera kwekugadzirisa maitiro kuitira kuti ive nechokwadi chemhedzisiro.

Mhando dzeLog LUTs:

• Standard Log: A standard log LUT inoshandiswa kuenzanisa yakasarudzwa kamera mhando / maprofile uye transformor exposures mune imwechete yakajairika fomati. Izvi zvinobvumira akawanda kamera mavhidhiyo kuti aoneke yunifomu mukutsigira kwekubatana kwekupedzisira kutaridzika. Chinangwa ndechekuwana 'kutarisa kumwe' pamifananidzo, zvisinei nekwayakabva kamera kana processor mhando (kureva, Blackmagic vs RED).
• Creative Log: Creative log LUTS inotarisa pakupa chaiwo maitiro kana yaiswa kuvhidhiyo / mifananidzo mifananidzo yakadai seyakapfava mufananidzo musiyano uye kubvisa gradient kutaridzika kwakagadzirwa neimwe munda rekodhi / kamera. Inogona kutogadzira kutaridzika kunoshamisa kunoshandiswa kune art kutungamira kana shanduko yekunzwa kwese kune mamwe ma clip anomira akasiyana kubva kune yako yese purojekiti zvichienderana nemafungiro kana manzwiro - sekugadzira 'inopenya' inotaridzika yakakurumbira kubva munhevedzano seStranger Zvinhu, Westworld uye mamwe sainzi fiction/ fantasy shows.

Creative LUTs

Creative LUTs anoshandiswa kuwedzera tonal shanduko uye stylized kutaridzika kumifananidzo. Vanogona kushandura maonero eruvara munzira dzakati wandei, sekuwedzeredza mamwe toni kana kugutsa mamwe mitsara yemufananidzo. Creative LUT's inogona kushandiswa kuwana vintage masitaera, analog firimu mhedzisiro kana dema & chena shanduko. Mhando dzakajairika dzeCreative LUTs dzinosanganisira:

• Cross Processing LUTs: Aya maLUT anodzokorora nzira yerima remuchinjika wemuchinjika firimu umo makemikari asiri iwo anoshandiswa kugadzira iyo firimu izvo zvinoguma neasiri echisikigo mavara uye akasiyana asina kujairika.
• Mafashoni/Runako LUTs: Aya maLUT akagadzirirwa chaiwo matani eganda uye mapfuti emafashoni, achipfavisa ganda rakakasharara richiona kutaridzika kunoenderana pamapuratifomu ese emidhiya, kubva pakudhinda kusvika pawebhu & inofamba mafoto mafomati.
• Split Tone & Duotone LUTs: Aya maturusi ekugadzira magiredhi anotendera iwe kuti ushandise maviri akasiyana eruvara marapirwo pamatanho akasiyana ekupenya mumufananidzo kune kudzika kwepamusoro uye kutonga kweruzivo.
• Rima Emulation LUTs: Neizvi, unogona kutevedzera emulsion yemafirimu akakurumbira seBlack & White nekupatsanura mifananidzo ye toning uye nekunatsiridza zvinhu zvine midtone curves kana kutaridzika kwakapararira.
• Vintage Lookup Tables (LUT): Kudzokorodza iyo yekare icon yekutarisa neiyo yechokwadi vintage inonzwa haina kumbobvira yave nyore kushandisa imwe yeiyi retro yakafemerwa Vintage Lookup Tables (LUT).

Technical LUTs

Technical LUTs enda kupfuura color grading uye normalization. Aya marudzi eLUTs akagadzirirwa chaizvo kuti ave neimwe uye yakananga mhedzisiro pane Vatema, Vachena, Kujeka kana Gamma. Aya maLUT anogona zvakare kushandiswa kugadzirisa chero matambudziko panguva yekugadzira, senge mavara kusawirirana pakati pemakamera akasiyana kana masosi emwenje.

Somuenzaniso, a technical LUT inogona kushandiswa kubatanidza vatema nevachena pamakamera maviri akasiyana saka kana ikatariswa pane imwechete monitor, inotaridzika kuenderana uye yakafanana maererano nezwi.

Technical LUTs inogona zvakare kushandiswa kune yakakosha mhedzisiro yakadai se:

• Thermal imaging nekushandura hues mhiri kwemumvuri izvo zvinogadzira inenge surreal maitiro.

Zvakanakira Kushandisa LUTs

LUTs (Tarisa kumusoro maTables) chishandiso chakakosha chekugadzira mavara mune inyanzvi uye amateur firimu uye vhidhiyo kugadzira maindasitiri. Ivo vanopa inokurumidza, inoshanda, uye yakatwasuka nzira yekushandisa uye kudzora kururamisa kwemavara kupurojekiti yako, zvichikubatsira iwe kuzadzisa chitarisiko chaunoda uye kunzwa nekukurumidza.

Muchikamu chino, tichatarisa mabhenefiti ekushandisa maLUT uye nei akakosha mukuita kwemavara magiredhi:

• Kurumidza uye kunoshanda kugadzirisa kwemavara
• Ruvara rwakafanana pamifananidzo yakawanda
• Zviri nyore kugadzirisa uye kugadzirisa
• Zviri nyore kushandisa kumapurojekiti makuru

kunyatsoshanda

Tarisa matafura (LUTs) ipa vagadziri vemavara vane hunyanzvi, chaihwo uye nzira dzakavimbika dzekuyera chiitiko kana kupfurwa. Iwo anobatsira kwazvo mukubatsira kuchengetedza ruvara rwakafanana pakati pemapfuti maviri kana mapikicha, kunyangwe akapfurwa pamakamera akasiyana. Nekushandisa pre-yakagadzirwa LUT, unogona kukurumidza kutanga negiredhi rako rose uye wozoiwedzera mberi sezvinodiwa.

LUTs zvakare batsira kudzikisa huwandu hwenguva inoshandiswa pachirongwa pasina kukanganisa chero yemhando yayo nekubvumira colorist kuti igadzirise mapfuti akati wandei panguva imwe chete pane yega. Ivo vanopa yakanyanya kutonga pamusoro pekupedzisira kutaridzika uye toni yekutevedzana kwese kuitira kuti imwe neimwe furemu iite seyakafanana uye inoyevedza. Uyezve, maLUT anogona kupa zvigadziriso zvisinganzwisisiki mukati memapfuti nekuwedzera mashoma emusiyano, saturation, kana kupenya pazvinenge zvichidikanwa, izvo zvingave zvisingagoneke kana uchigadzirisa mafuremu ega nemaoko.

• Zvakanakira kushandisa LUTs:
  • Kurumidza tanga negiredhi rako rose
  • Deredza nguva inoshandiswa pachirongwa
  • Yakanyanya kutonga pamusoro pekupedzisira kutarisa uye toni yekutevedzana kwese
  • Kuwedzeredza kwakadzikama panguva yekupfura
  • Tarisa zvakasikwa nekuda kwekuyera kwemavara kunobva pane yakaoma masvomhu
  • Batsira kugadzirisa matambudziko akadai sekukanda kwemavara pasina kugadzirisa ma parameter akawanda panguva imwe chete

Consistency

Paunenge uchishandisa Tarisa Up Tables (LUTs) yekugadzira mavara, iyo nguva inodiwa pakuita shanduko kumapurojekiti ese inodzikiswa zvakanyanya. Izvi zvichaguma nekumhanya kwakanyanya kwekushanda, pasina kurasikirwa kwemhando.

Uye zvakare, kana iwe ukagidha mufananidzo kana kutevedzana kwemifananidzo zvinoenderana LUTs, unozogona kuona kuti chero shanduko dzawakaita mupurojekiti yese dzinoramba dzichienderana. Izvi zvinokutendera kuti uvimbise huwandu hwepamusoro hwekuenderana uye kurongeka pakati pemunhu mumwe nemumwe kupfurwa uye zvinobatsira kuchengetedza kutaridzika kwese uye kunzwa pamifananidzo yese, pane kuve nayo pese pese. Consistency kana color grading iri anokosha mukutaura meseji chaiyo uye kutaura nyaya yako nemazvo.

Quality

Imwe yemabhenefiti makuru ekushandisa Tarisa Kumusoro Matafura (LUTs) kana kugadzikwa kwemavara ndiko kwakagadziridzwa mhando yemifananidzo. Kutanga, maLUT ane chokwadi chakanyanya kana zvichienzaniswa nedzimwe nzira nekuti anorerutsa maitiro ese nekutarisa pre-yakarongwa sainzi uye masvomhu. Nemakomputa algorithms uye otomatiki mabasa anoenderana neakananga mapatani uye mavara emhando, vashandisi vanogona kubatsirwa kubva kune inoshanda magiredhi emavara ayo anoburitsa mhedzisiro inowirirana. Izvi zvinobatsira kuve nechokwadi chemhando yepamusoro mumapurojekiti ese-kunyanya sezvo paine nzvimbo shoma yezvikanganiso senge kusawirirana kweganda reganda kana kusaenderana kwemavara mune mamwe mapikicha.

Chimwe chikamu chemhando chine chekuita nekumhanya uye kugona kwakabatana neLUTs. Kuenzaniswa nemaitiro emaoko akadai se curves or vanotsvedza izvo zvinoda nguva yakawanda yekutarisa mapoinzi, mazinga, mabhenji uye zvimwe zvinhu zvine chekuita nepfuti yega yega (kutora zviwanikwa zvakakosha), kushandisa LUTs kunopa vashandisi mupendero mukumhanya kunobatsira kudzikisa mutengo nekudzikisa nguva yebasa inodiwa pamapurojekiti ese. Uyezve, otomatiki mabasa seaya anopa vashandisi mhedzisiro chaiyo munguva shoma shoma-yakanaka yekupfura pane yakasimba purogiramu kana kungoita chokwadi chekuti mazuva ekupedzisira azadziswa nekukurumidza uye nemazvo.

mhedziso

Mukupedzisa, LUTs chishandiso chakakosha chevaravara yekugadzira inopindirana mavara magiredhi pamapurojekiti nemakamera. Nekugona kuenzanisa mavara kuburikidza negamut mepu uye HDR, LUTs inopa mhinduro dzakavimbika nekukurumidza. Nekushandisa tekinoroji yavo ine simba uye inoshanda, chero mhando yekufambiswa kwebasa inogoneswa nemavara akapfuma uye nzvimbo dzakajeka dzemavara. Neruzivo rwakakwana, maratidziro ekuona evaratidziri anogona kuwedzera Rakasimba kupfuura kare.

Mhoroi, ndini Kim, amai uye munhu anofarira zvekumira-famba ane ruzivo mukugadzira midhiya nekuvandudzwa kwewebhu. Ndine chido chikuru chekudhirowa uye mifananidzo, uye ikozvino ndiri kunyura nemusoro munyika yekumira-kufamba. Neblog rangu, ndiri kugovera zvandinodzidza nemi varume.