Njengamanje, kubuchwepheshe bokuphatha imibala, lokho okubizwa ngokuthi isikhala sokuxhuma isici sombala sisebenzisa isikhala se-chromaticity se-CIE1976Lab. Imibala kunoma iyiphi idivayisi ingaguqulelwa kulesi sikhala ukuze yakhe indlela yencazelo "yomhlaba wonke", bese ukufanisa imibala nokuguqulwa kuyenziwa. Ngaphakathi kwesistimu yokusebenza yekhompuyutha, umsebenzi wokuqalisa ukuguqulwa kokufanisa imibala uqedelwa "imojula yokufanisa imibala", ebaluleke kakhulu ekuthembekeni kokuguqulwa kombala nokumataniswa kombala. Ngakho-ke, ungafinyelela kanjani ukudluliswa kombala endaweni yombala "yomhlaba wonke", ukufeza ukulahleka kombala okungalahleki noma okuncane?
Lokhu kudinga isethi ngayinye yamadivayisi ukwenza iphrofayela, okuyifayela lesici sombala wedivayisi.
Siyazi ukuthi amathuluzi ahlukahlukene, izinto zokwakha, nezinqubo zibonisa izici ezihlukile lapho kwethulwa futhi kudluliswa imibala. Ekulawulweni kwemibala, ukwethula imibala ethulwa kudivayisi eyodwa enokwethembeka okuphezulu kwenye idivayisi, kufanele siqonde izici zokwethulwa kombala zemibala kumadivayisi ahlukahlukene.
Njengoba kukhethiwe isikhala sombala esizimele sedivayisi, i-CIE1976Lab chromaticity space, sikhethiwe, izici zombala zedivayisi zimelelwa ukuxhumana phakathi kwevelu yencazelo yedivayisi kanye nevelu ye-chromaticity yendawo yombala "yomhlaba wonke", okuyidokhumenti yencazelo yombala wedivayisi. .
1. Ifayela lencazelo yesici sombala wedivayisi
Kubuchwepheshe bokuphatha imibala, izinhlobo ezivame kakhulu zamafayela encazelo yesici sombala wedivayisi yilezi:
Uhlobo lokuqala yifayela lesici sesithwebuli, ehlinzeka ngemibhalo yesandla evamile evela ezinkampanini ze-Kodak, Agfa, ne-Fuji, kanye nedatha evamile yale mibhalo yesandla. Le mibhalo yesandla ifakwa kusetshenziswa isithwebuli, futhi umehluko phakathi kwedatha eskeniwe kanye nedatha evamile yombhalo wesandla ubonisa izici zesikena;
Uhlobo lwesibili yifayela lesici lesibonisi, ehlinzeka ngesofthiwe ethile engakala izinga lokushisa lombala lesibonisi, bese ikhiqiza ibhulokhi yombala esikrinini, ebonisa izici zesibonisi; Uhlobo lwesithathu yifayela lesici ledivayisi yokuphrinta, elihlinzeka nesethi yesofthiwe. Isofthiwe ikhiqiza igrafu equkethe amakhulukhulu amabhulokhi ombala kukhompuyutha, bese ikhipha igrafu kudivayisi yokukhiphayo. Uma kuyiphrinta, isampula ngokuqondile, futhi umshini wokunyathelisa uqala ukukhiqiza ifilimu, amasampula, namaphrinti. Isilinganiso salezi zithombe eziphumayo sibonisa ulwazi lwefayela lesici ledivayisi yokuphrinta.
Iphrofayela ekhiqiziwe, eyaziwa nangokuthi ifayela lesici sombala, iqukethe amafomethi amathathu amakhulu: unhlokweni wefayela, ithebula lethegi, kanye nedatha yesici somaka.
·Unhlokweni wefayela: Uqukethe ulwazi oluyisisekelo mayelana nefayela lesici sombala, elifana nosayizi wefayela, uhlobo lwendlela yokulawula umbala, inguqulo yefomethi yefayela, uhlobo lwedivayisi, isikhala sombala wedivayisi, indawo yombala yefayela lesici, isistimu yokusebenza, umkhiqizi wedivayisi. , okuqondiwe kokubuyiselwa kombala, imidiya yoqobo, idatha yombala womthombo wokukhanya, njll. Unhlokweni wefayela uthatha inani lamabhayithi angu-128.
· TIthebula le-ag: Liqukethe ulwazi mayelana negama lenani, indawo yokugcina, nosayizi wedatha wamathegi, kodwa alibandakanyi okuqukethwe okuthile komaka. Igama lenani lamathegi lithatha amabhayithi angu-4, kuyilapho into ngayinye kuthebula lethegi ithatha amabhayithi angu-12.
·Idatha yesici semakhaphu: Igcina imininingwane ehlukahlukene edingekayo ekuphathweni kombala ezindaweni ezikhethiwe ngokuya ngemiyalelo kuthebula lomaka, futhi iyahlukahluka kuye ngobunkimbinkimbi bolwazi lomaka kanye nosayizi wedatha enelebula.
Kumafayela esici sombala wemishini emabhizinisini okuphrinta, opharetha bokucubungula imininingwane yezithombe banezindlela ezimbili zokuzithola:
·Indlela yokuqala: Lapho uthenga izinto zokusebenza, umenzi uhlinzeka ngephrofayili kanye nezinto zokusebenza, ezingahlangabezana nezidingo ezijwayelekile zokuphatha umbala wezinto zokusebenza. Lapho ufaka isofthiwe yohlelo lwemishini, iphrofayili ilayishwa ohlelweni.
·Indlela yesibili iwukusebenzisa isofthiwe yokudala iphrofayela ekhethekile ukuze kukhiqizwe amafayela encazelo yesici sombala afanelekayo ngokusekelwe esimweni sangempela samadivayisi akhona. Leli fayela elakhiwe ngokuvamile linembe kakhulu futhi lihambisana nesimo sangempela somsebenzisi. Ngenxa yoshintsho noma ukuchezuka esimweni semishini, izinto zokwakha, nezinqubo ngokuhamba kwesikhathi. Ngakho-ke, kuyadingeka ukwenza kabusha iphrofayili ngezikhathi ezithile ukuze uvumelane nesimo sokuphendula umbala ngaleso sikhathi.
2. Ukudlulisa umbala ocingweni
Manje, ake sibheke ukuthi imibala isakazwa kanjani kumadivayisi ahlukahlukene.
Okokuqala, kumbhalo wesandla onemibala evamile, isithwebuli sisetshenziselwa ukuskena nokuwufaka. Ngenxa yephrofayili yesithwebuli, inikeza ubudlelwano obuhambisanayo obusuka embaleni (okungukuthi amanani e-tristimulus abomvu, aluhlaza, naluhlaza okwesibhakabhaka) kusikena kuya kusikhala se-chromaticity se-CIE1976Lab. Ngakho-ke, isistimu yokusebenza ingathola ilebhu yenani le-chromaticity yombala wangempela ngokuya ngalobu budlelwano bokuguqulwa.
Isithombe esiskeniwe sivezwa esikrinini sokubonisa. Njengoba isistimu ikwazi ukuxhumana phakathi kwamanani e-chromaticity Yelebhu kanye namasiginali okushayela abomvu, aluhlaza, naluhlaza okwesibhakabhaka esibonisini, akudingekile ukusebenzisa ngokuqondile amanani e-chromaticity abomvu, aluhlaza, naluhlaza okwesibhakabhaka esikena ngesikhathi sokuboniswa. Esikhundleni salokho, ukusuka kumanani we-Lab chromaticity wombhalo wesandla wangaphambilini, ngokuya ngobudlelwano bokuguqulwa obunikezwe iphrofayili yesibonisi, amasiginali okushayela wesibonisi anombala obomvu, oluhlaza okotshani, noluhlaza okwesibhakabhaka ongaveza kahle umbala wangempela esikrinini ayatholakala, Shayela isibonisi. ukubonisa imibala. Lokhu kuqinisekisa ukuthi umbala ovezwe kusiqaphi ufana nombala wangempela.
Ngemva kokubona isibonisi sombala wesithombe esinembile, u-opharetha angalungisa isithombe ngokuvumelana nombala weskrini ngokwezidingo zekhasimende. Ukwengeza, ngenxa yephrofayili equkethe izinto zokunyathelisa, umbala ofanele ngemva kokuphrinta ungabonwa esibonisini ngemva kokuhlukaniswa kombala wesithombe. Ngemva kokuba u-opharetha enelisekile ngombala wesithombe, isithombe siyahlukaniswa futhi sigcinwe. Ngesikhathi sokuhlukaniswa kombala, iphesenti elilungile lamachashazi litholwa ngokusekelwe ebudlelwaneni bokuguqulwa kombala obuqhutshwa iphrofayela yedivayisi yokuphrinta. Ngemva kokwenza i-RIP (Raster Image Processor), ukuqopha nokuphrinta, ukuphrinta, ukuqinisekiswa, nokuphrinta, ikhophi ephrintiwe yombhalo wokuqala ingatholakala, ngaleyo ndlela kuphothulwe yonke inqubo.
Isikhathi sokuthumela: Nov-23-2023
