Okwangoku, kwitekhnoloji yolawulo lombala, into ebizwa ngokuba yi-color color connection space isebenzisa indawo yechromaticity ye-CIE1976Lab. Imibala kuso nasiphi na isixhobo sinokuguqulwa kule ndawo ukwenza indlela yenkcazo "yendalo yonke", kwaye emva koko ukuhambelana nokuguqulwa kombala kuyenziwa. Ngaphakathi kwenkqubo yokusebenza yekhompyutheni, umsebenzi wokuphumeza ukuguqulwa kombala ohambelana nombala ugqitywe "yimodyuli yokulinganisa umbala", ebaluleke kakhulu ekuthembekeni kokuguqulwa kombala kunye nokudibanisa umbala. Ke, njani ukufezekisa ukuhanjiswa kombala kwindawo yombala "yendalo yonke", ukufezekisa ukulahleka kombala okulahlekileyo okanye okuncinci?
Oku kufuna isethi nganye yezixhobo ukuvelisa iprofayile, eyifayile yombala wesixhobo.
Siyazi ukuba izixhobo ezahlukeneyo, imathiriyeli, kunye neenkqubo zibonisa iimpawu ezahlukeneyo xa ubonisa kwaye uhambisa imibala. Kulawulo lwemibala, ukubonisa imibala evezwe kwisixhobo esinye ngokuthembeka okuphezulu kwesinye isixhobo, kufuneka siqonde iimpawu zokubonisa imibala yemibala kwizixhobo ezahlukeneyo.
Ukusukela ekubeni isixhobo esizimeleyo sisithuba sombala, isithuba se-CIE1976Lab chromaticity, sikhethiwe, iimpawu zombala zesixhobo zimelwe yimbalelwano phakathi kwexabiso lenkcazo yesixhobo kunye nexabiso lechromaticity yendawo yombala "yendalo yonke", eluxwebhu lwenkcazo yombala wesixhobo. .
1. Ifayile yenkcazo yombala wesixhobo
Kubuchwephesha bolawulo lombala, ezona ntlobo zixhaphakileyo zefayile yenkcazelo yombala wesixhobo zezi:
Uhlobo lokuqala luphawu lwefayile yesikena, ebonelela ngemibhalo-ngqangi eqhelekileyo evela kwiinkampani ze-Kodak, i-Agfa, ne-Fuji, kunye nedatha eqhelekileyo yale mibhalo-ngqangi. Le mibhalo-ngqangi ifakwa kusetyenziswa iskena, kwaye umahluko phakathi kwedatha eskeniweyo kunye nedatha yesandla esemgangathweni ibonisa iimpawu zeskena;
Uhlobo lwesibini luphawu lwefayile yomboniso, ebonelela ngesoftware enokulinganisa ubushushu bombala wesiboniso, kwaye emva koko ivelise ibhloko yombala kwiscreen, ebonisa iimpawu zomboniso; Uhlobo lwesithathu luphawu lwefayile yesixhobo sokushicilela, esikwabonelela ngeseti yesoftware. Isoftware yenza igrafu equlathe amakhulu eebhloko zemibala kwikhompyuter, kwaye emva koko ikhuphe igrafu kwisixhobo sokukhupha. Ukuba ngumshicileli, iisampulu ngokuthe ngqo, kwaye umatshini wokushicilela uqala ukuvelisa ifilimu, iisampulu, kunye noshicilelo. Umlinganiselo wale mifanekiso yemveliso ubonisa ulwazi lwefayile yesixhobo soshicilelo.
Iprofayile evelisiweyo, eyaziwa ngokuba yifayile yombala, iqulathe iifomati ezintathu eziphambili: iheader yefayile, ithegi yethegi, kunye nedatha yethegi.
·Isihloko sefayile: Iqulethe ulwazi olusisiseko malunga nombala wefayile yefayile, njengobungakanani befayile, uhlobo lwendlela yokulawula umbala, uguqulelo lwefomati yefayile, uhlobo lwesixhobo, indawo yombala wesixhobo, indawo yombala wefayile yefayile, inkqubo yokusebenza, umenzi wesixhobo. , ithagethi yokubuyisela umbala, imidiya yoqobo, idatha yombala womthombo wokukhanya, njl njl. Isihloko sefayile sithatha i-128 bytes iyonke.
· TItheyibhile ye-ag: Iqulethe ulwazi malunga negama lobuninzi, indawo yokugcina, kunye nobukhulu bedatha yeethegi, kodwa ayibandakanyi umxholo othile weethegi. Igama lobungakanani beethegi lithatha i-4 bytes, ngelixa into nganye kwithegi yethegi ithatha i-12 bytes.
·Idatha ye-markup element: Igcina ulwazi olwahlukeneyo olufunekayo kulawulo lombala kwiindawo ezichongiweyo ngokwemiyalelo ekwitheyibhile yokuphawula, kwaye iyahluka ngokuxhomekeka kubunzima bolwazi lophawu kunye nobukhulu bedatha ebhaliweyo.
Kwiifayile zemibala yezixhobo kumashishini oshicilelo, abaqhubi bemifanekiso kunye nokulungiswa kolwazi lombhalo baneendlela ezimbini zokuzifumana:
·Indlela yokuqala: Xa kuthengwa izixhobo, umenzi ubonelela ngeprofayili kunye nezixhobo, ezinokuhlangabezana neemfuno zokulawula umbala jikelele wesixhobo. Xa ufaka isoftware yesicelo sesixhobo, iprofayili ilayishwa kwisistim.
·Indlela yesibini kukusebenzisa isoftware yokudala iprofayile ekhethekileyo ukuvelisa iifayile ezifanelekileyo zenkcazo yeempawu ezibhekiselele kwimeko yokwenyani yezixhobo ezikhoyo. Le fayile yenziweyo ikholisa ukuchaneka ngakumbi kwaye ihambelana neyona meko yomsebenzisi. Ngenxa yotshintsho okanye ukutenxa kwimeko yezixhobo, imathiriyeli kunye neenkqubo ngokuhamba kwexesha. Ngoko ke, kuyimfuneko ukwenza kwakhona iphrofayili ngamaxesha aqhelekileyo ukulungelelanisa imeko yokuphendula umbala ngelo xesha.
2. Ukuhanjiswa kombala kwisixhobo
Ngoku, makhe sijonge indlela imibala ehanjiswa ngayo kwizixhobo ezahlukeneyo.
Okokuqala, kumbhalo-ngqangi onemibala eqhelekileyo, iskena sisetyenziselwa ukuskena kunye nokusifaka. Ngenxa yeprofayile yeskena, ibonelela ngonxulumano oluhambelanayo olusuka kumbala (okt obomvu, oluhlaza, namaxabiso e-tristimulus abhlowu) kwiskena ukuya kwisithuba sekhromaticity ye-CIE1976Lab. Ke ngoko, inkqubo yokusebenza inokufumana iLab yexabiso lechromaticity yombala wokuqala ngokobu budlelwane bokuguqulwa.
Umfanekiso oskeniweyo uboniswa kwiscreen esiboniswayo. Kuba inkqubo iye yakwazi ukunxibelelana phakathi kwamaxabiso eLab chromaticity kunye neempawu zokuqhuba ezibomvu, eziluhlaza, eziluhlaza okwesibhakabhaka kwisibonisi, akuyomfuneko ukusebenzisa ngokuthe ngqo amaxabiso echromaticity ebomvu, eluhlaza, kunye neblue yeskena ngexesha lokubonisa. Endaweni yoko, ukusuka kumaxabiso eLab chromaticity yombhalo-ngqangi wangaphambili, ngokobudlelwane boguquko obunikezwe yiprofayile yokubonisa, imiqondiso yokuqhuba ebomvu, eluhlaza, eluhlaza, nebhlowu enokubonisa ngokuchanekileyo umbala woqobo kwiscreen ifunyenwe, Qhuba umboniso. ukubonisa imibala. Oku kuqinisekisa ukuba umbala oboniswe kwimonitha uhambelana nombala wokuqala.
Emva kokujonga umboniso wombala ochanekileyo, umqhubi unokuhlengahlengisa umfanekiso ngokombala wesikrini ngokweemfuno zabathengi. Ukongeza, ngenxa yeprofayili equlethe izixhobo zokuprinta, umbala ochanekileyo emva kokuprintwa unokubonwa kwisiboniso emva kokwahlulwa kombala womfanekiso. Emva kokuba umqhubi anelisekile ngumbala womfanekiso, umfanekiso uhlukaniswe kwaye ugcinwe. Ngexesha lokwahlulwa kombala, ipesenti echanekileyo yamachaphaza ifunyanwa ngokusekelwe kunxulumano lokuguqulwa kombala oluqhutywa yiprofayile yesixhobo sokushicilela. Emva kokwenza i-RIP (i-Raster Image Processor), ukurekhoda kunye nokushicilela, ukuprinta, ukuqinisekiswa, kunye nokushicilela, ikopi eprintiweyo yoxwebhu lokuqala inokufumaneka, ngaloo ndlela igqibe yonke inkqubo.
Ixesha lokuposa: Nov-23-2023
