Iyini i-Color Gamut? Umhlahlandlela Wobungcweti Wokunemba Kombala Ekunyatheliseni Kwanamuhla

Uma uke waqhathanisa ubufakazi bedijithali obuphezulu nomkhiqizo wokugcina ophrintiwe futhi wazizwa uphoxekile, uke wahlangabezana "negebe le-gamut". Ezweni lokunyathelisa nokupakisha kochwepheshe, umbala awuyona nje ukukhetha okuhle; kuyincazelo yobuchwepheshe engenza noma iphule idumela lomkhiqizo.

Inhliziyo yale nselele kukhona umqondo obizwa ngokuthi i-Color Gamut. Ukuyiqonda kubalulekile kunoma ubani ohlose ukuhlanganisa ukwahlukana phakathi komklamo wedijithali kanye neqiniso elingokoqobo. Kulo mhlahlandlela, sizodlula i-jargon bese sibheka ukuthi i-color gamut isho ukuthini ngempela emgqeni wakho wokukhiqiza nokuthi ukuhlolwa okuqhutshwa yi-AI kushintsha kanjani umdlalo.

Iyini i-Color Gamut

Empeleni, i-color gamut iwububanzi bemibala idivayisi engayikhiqiza ngokunembile. Akukho divayisi eyodwa, kungaba yisikrini se-OLED esisezingeni eliphezulu, ikhamera yedijithali, noma ngisho nomshini wokunyathelisa we-offset obiza izigidi zamaRandi, ongathwebula noma ukhiqize ububanzi obugcwele bemibala ebonakala esweni lomuntu.

Cabanga nge-spectrum ebonakalayo njengendawo enkulu. I-gamut yemibala uthango esilwakhayo oluzungeze ingxenye ethile yaleyo ndawo. Konke okungaphakathi kothango yilokho umshini othile “ongakwenza”. Konke okungaphandle kothango kumane kungabonakali noma akufinyeleleki kulowo mshini.

Isikhala Sombala vs. Umbala I-Gamut: Ukususa Ukudideka

Ngaphambi kokuba siqhubekele phambili, ake sicacise amagama amabili avame ukuxutshwa:

• Isikhala Sombala: Lena imodeli yezibalo esetshenziselwa ukuchaza imibala (njengezixhumanisi ezikumephu). Izibonelo zifaka phakathi i-RGB, i-CMYK, kanye ne-Lab.
• I-Gamut Yombala: Lena indawo yangempela embozwe yidivayisi ethile ngaphakathi kwaleyo mephu.

Uma unamamonitha amabili ahlukene, womabili asebenzisa isikhala sombala se-RGB, kodwa imonitha ephezulu cishe inohlu olukhulu kakhulu kunesikrini sehhovisi esingabizi kakhulu.

Kungani Imibala Ye-Gamut Ibalulekile Ekukhiqizweni Kokuphrinta

Ezimbonini ezifana ukupakishwa kwemithi, ugwayi, noma izimonyo zobukhazikhazi, umbala awuyona nje imininingwane; uyisici sokuphepha kanye nophawu.

Cabanga ngekhasimende libheke eshalofini lamabhokisi eziqholo. Uma “iGolide” ebhokisini elilodwa libukeka “liNsundu” kancane kuneliseduze kwalo, ikhasimende alicabangi ukuthi, “O, lokho kumane kuyiphutha lokumapha elingavamile.” Licabanga ukuthi, “Ingabe lokhu kungokwamanga? Ingabe kudala?”

Ngaphezu kwalokho, ukuzulazula kombala ngesikhathi sokukhiqiza isikhathi eside kungabiza kakhulu. Uma i-viscosity yeyinki ishintsha noma umshini wokucindezela ushisa phakathi nokugijima, umbala wakho ungaphuma ku-gamut yawo ehlosiwe. Ngaphandle kokutholwa kwesikhathi sangempela, ungaphrinta amayunithi angu-50,000 anephutha ngaphambi kokuba noma ubani aqaphele.

Ukubuka Imikhawulo Yombala Ngeso Lengqondono-tUmdwebo we-CIE 1931

Ukuze balinganise umbala, ososayensi ngo-1931 bakha “imephu” yombono womuntu ebizwa ngokuthi i-CIE 1931 Chromaticity Diagram. Ibukeka njengonxantathu onemibala, oyindilinga noma isicathulo sehhashi.

Uma ubheka imininingwane yobuchwepheshe yesikrini noma iphrinta, uzobona unxantathu omncane odwetshwe ngaphakathi kwalesi sicathulo sehhashi. Lowo nxantathu umele uhlobo lwedivayisi. Izindinganiso ezivame kakhulu ozohlangana nazo zifaka:

• i-sRGB: Indinganiso yomhlaba wonke ye-inthanethi kanye ne-electronics yabathengi. Kuyindlela ephephile, "encane" eqinisekisa ukuthi iwebhusayithi yakho ibukeka cishe ifana ocingweni eNew York njengoba ibukeka kwi-laptop eBeijing.
• I-Adobe RGB: Yenzelwe ukufaka imibala eminingi ye-cyan neluhlaza esetshenziswa ekunyatheliseni kobungcweti. Ibanzi kakhulu kune-sRGB futhi iyinto eyisisekelo yokuthatha izithombe ezisezingeni eliphezulu.
• I-DCI-P3: Ekuqaleni kwe-cinema yedijithali, le gamut manje iyindinganiso yamadivayisi abathengi abasezingeni eliphezulu. Inikeza "ukushaya" okwengeziwe ngombala obomvu nophuzi.
• Okusanda Kuqalwa ngo-2020:Umngcele we-Ultra-HD (4K/8K) ubonisa, omelela ukwenyuka okukhulu kokugcwala kombala esisanda kuqala ukukuqonda.

Kungani Eminye Imibala Yesikrini Ingaphinde Ikhiqizwe Ngokuphrinta

Inkinga enkulu ekukhiqizeni yenzeka lapho sisuka ku-Additive Color (RGB) yezikrini siye ku-Subtractive Color (CMYK) kayinki nephepha.

Isikrini sidala umbala ngokukhipha ukukhanya. Iphrinta idala umbala ngokusebenzisa uyinki ukuze imunce (isuse) ukukhanya okubonisa i-substrate. Ngenxa yokuthi uyinki ungamakhemikhali angokwenyama, unemikhawulo. Ngisho noyinki we-CMYK ongcono kakhulu awukwazi ukulingisa ukukhanya okukhanyayo, okufana ne-neon kwesikrini esikhanyiswe ngemuva.

Uma umklami ekhetha umbala onsomi ojulile, osebenza ngogesi esikrinini sakhe, lowo mbala cishe “ungaphandle kwe-gamut” yomshini ojwayelekile wemibala emine. Yingakho “ukufaka izinto ezithambile”—inqubo yokulingisa i-gamut elinganiselwe yephrinta esikrinini—kuyisinyathelo esingenakuxoxiswana ngaso emisebenzini yobungcweti.

Indlela i-Gamut Mapping ephatha ngayo imibala engaphandle kwe-Gamut

Uma umbala ungaphandle kwe-gamut, isofthiwe kufanele inqume ukuthi izokwenzenjani ngawo. Lokhu kubizwa ngokuthi i-Gamut Mapping (noma i-Rendering Intents). Kunezindlela ezine eziyinhloko, futhi ukukhetha okungalungile kungonakalisa ukuphrinta:

• Ukuqonda: Ihlukanisa lonke uhla lwemibala ibe yi-gamut encane. Nakuba ishintsha yonke imibala kancane, igcina ubudlelwano obubonakalayo phakathi kwayo, okwenza izithombe zibukeke zemvelo.
• I-Colorimetric Ehlobene: Ishiya yonke imibala "ephephile" yodwa futhi ishintsha imibala "engenakwenzeka" iye kohambisana kakhulu. Lena yindlela ethandwayo yama-logo kanye nophawu.
• Ukugcwala: Ibeka phambili imibala egqamile kunokunemba. Ilungele amashadi ebhizinisi, ayilungile ngemibala yesikhumba.
• I-Absolute Colorimetric: Izama ukuphinda iphuzu elimhlophe eliqondile lephepha elivela kulo. Isetshenziswa kakhulu ekuhlolweni okuphezulu.

Isixazululo se-SINOMV: Ukunemba Okuqhutshwa yi-AI Ekutholeni Umbala

Kwa-SINOMV, sichithe iminyaka engaphezu kwengu-15 sixazulula "igebe le-gamut" lamaphrinta adinga kakhulu emhlabeni. Sisiza amaphrinta ukuthola ukulawula okucacile kokunemba kombala ngokuhlanganisa ubuchwepheshe bokubona be-AI nezindlela zokulinganisa umbala ezisebenzayo ezenzelwe izindawo zokukhiqiza zangempela.

Okwethu izinhlelo zokuhlolahlola umbala ophrintiwe ngokuqhathanisa nezinkomba ezivunyiwe, okuvumela abasebenzisi ukuthi babone ukuthi imibala ihlala ngaphakathi kobubanzi be-gamut obuhlosiwe. Lokhu kwenza kube lula ukubona ukushintsha okucashile okungenzeka kungabonakali emehlweni omuntu kodwa kusathinta ukuhambisana kanye nokunemba komkhiqizo.

Sisekela kokubili ukuhlolwa kombala okusekelwe kukhamera kanye nokulinganisa sisebenzisa imichilo yokulawula, senza kube lula ukuhlola umbala oqondile kuzo zonke izimo zokuphrinta ezahlukene. Le ndlela isiza ukunciphisa ukwahlulela okuqondene nomuntu, ukuzinzisa umbala kusukela ekugijimeni kuya ekugijimeni, futhi sisekele ukwenza izinqumo njalo emaphephandabeni.

Ngokuhlanganisa ukutholwa kombala emisebenzini yokuhlola, sisiza abaphrinta ukunciphisa imfucuza, sinciphise isikhathi sokulungisa, futhi silondoloze ukuhambisana kombala okuthembekile kulo lonke ukukhiqizwa.

Indlela Yokuthuthukisa Ukugeleza Komsebenzi Wakho Wokuphrinta Ukuze Ube Ngcono Ciphunga Ukulawulwa Kwe-Gamut

Uma ufuna ukuthola imiphumela yezinga lobuchwepheshe, udinga uhlelo lokusebenza oluhlonipha isayensi yombala. Nazi izinyathelo ezine okufanele uzithathe:

• Yenza Indawo Yakho Ibe Yifanele: Qinisekisa ukuthi igumbi lakho lokuklama lisebenzisa ukukhanya kwe-D50 (5000K). Ukukhanya okuzungezile kushintsha kakhulu indlela amehlo akho abona ngayo i-gamut.
• Linganisa ihadiwe yakho: Ikhono lemonitha yakho lokubonisa ububanzi bayo obuphelele liyawohloka ngokuhamba kwesikhathi. Sebenzisa i-colorimeter ukuze ulinganise izikrini zakho okungenani kanye ngenyanga.
• Imibala Yezindawo Zokusebenzisa: Uma umbala womkhiqizo ungaphandle kwe-CMYK gamut, ungazami "ukuphoqa" Sebenzisa umbala oqondile (njengePantone) ukuze ufeze lokho kugqama okuthile.
• Sebenzisa Amasango Ekhwalithi Ezenzakalelayo: Sebenzisa uhlelo lokubona oluqhutshwa yi-AI njengalolo oluvela ku-SINOMV ukuze uvale igebe phakathi komklamo wangaphambi kokucindezelwa kanye nokuqaliswa kokukhiqiza kokugcina.

Isiphetho

“Kuyini i-color gamut?” Kungaphezu nje kwencazelo yobuchwepheshe; kungumngcele walokho okungenzeka ekuxhumaneni okubonakalayo. Nakuba singase singakwazi ukuphrinta yonke imibala esiyibonayo emvelweni, manje sinamathuluzi okuqinisekisa ukuthi lokho esingakuphrinta kuyahambisana, kunembile, futhi kuyamangaza.

Emakethe encintisana kakhulu, izinkampani eziwinayo yizo ezingashiyi lutho ngengozi. Ngokuqonda i-gamut nokusebenzisa ukuhlolwa okusebenzisa i-AI okuvela ku-SINOMV, ungaqinisekisa ukuthi imibala yomkhiqizo wakho iphelele eshalofini njengoba yayinjalo esikrinini somklami.