Ukuqwalasela kakuhle indlela i-LCD Monitor ekuHlaleni uMbala
Umbala we-gamut uthetha kumanqanaba ahlukeneyo emibala enokuthi iboniswe ngedivayisi. Kukho ngokwenene ezimbini iintlobo zombala we-gamuts, ukongeza kunye nokukhupha. I-Additive ibhekisela kumbala owenziwe ngokuxubana kunye nokukhanya kwimibala ukudala umbala wokugqibela. Le ndlela isetyenziswe ngamakhompyutha, ithelevishini nezinye izixhobo. Ngokuqhelekileyo kubhekiselwa ku- RGB ngokubhekiselele ekukhanyeni okubomvu, okuluhlaza nokuluhlaza okwakusetyenziselwa ukuvelisa imibala. Umbala okhuphayo usebenziswa ngokuxuba kunye kunye neetayi ezithintela ukubonakalisa ukukhanya okuvelisa umbala. Le ndlela isetyenziswe kuwo wonke amaphephandaba ashicilelweyo njengezithombe, amaphephancwadi kunye neencwadi. Kwakhona ngokubanzi kuthiwa yi-CMYK esekelwe kwicyan, i-magenta, i-yellow and black pigments esetyenziswe ekushicileleni.
Ekubeni sithetha ngabagadi be-LCD kweli nqaku, siza kujonga kumbala weRGB kumbala kunye nendlela abahloli abahlukeneyo abanokulinganisa ngayo umbala wabo. Ingxaki kukuba kukho iintlobo ezahlukeneyo zembala ye-gamuts ukuba isikrini sinokulinganiswa.
sRGB, i-AdobeRGB, i-NTSC kunye ne-CIE 1976
Ukuze ulinganise indlela umbala ifowuni inokusingatha ngayo, isebenzisa enye yemigqa yembala eqhelekileyo echaza uhlobo oluthile lombala. Eyona ndawo ixhaphakileyo ye-RGB imbala ye-gamuts i-sRGB. Lo ngumbala webala lomdlalo osetyenziswa kuwo wonke umboniso wekhomputha, iiTV, ii-khamera, ii-rekodi zevidiyo kunye nezinye i-electronics zabathengi. Ngomnye wemdala kakhulu kwaye ngoko ke kuncinci kumbala we-gamuts esetyenziswe kwisikhokelo sekhompyutha kunye nabathengi ngekhompyutha.
I-AdobeRGB yaqulunqwa ngu- Adobe njengombala we-gamut ukuze unikezele uluhlu olubanzi lwemibala ngaphezu kwe-sRGB. Baqulunqa oku kusetyenziswe ngeenkqubo zabo zeemifanekiso eziquka i-Photoshop njengendlela yokunika abaqeqeshi umgangatho ophezulu wombala xa basebenza kwimifanekiso kunye neefoto phambi kokuguqula ukuprinta. I-CMYK inombala omkhulu wembala ngokuthelekiswa nee-RGB gamuts, ngoko ke i-AdobeRGB gamut ebanzi yenza inguqu engcono yemibala yokuprinta ngaphandle kwe-sRGB.
I-NTSC yayinguye umbala wombala ophuhliselwe uluhlu lwembala engayimelwa kwiso lomntu. Kwakhona kuphela ummeli wemibala ebonwa ngabantu abangayi kubona kwaye akunjalo umbala omkhulu kunabo bonke. Abaninzi banokucinga ukuba oku kuhambelana nomgangatho we - TV obizwa ngokuba nguwe emva koko, kodwa akunjalo. Uninzi lwezixhobo zehlabathi zangoku azinako ukufikelela kweli nqanaba lombala kwisiboniso.
Ukugqibela kwimibala ye-gamuts engayibonakaliswa kwi-LCD yokubala kombala yi-CIE 1976. Iindawo zebala zeCIE zenye yeendlela zokuqala zokuchaza imibala ethile yemathematika. Ingqungquthela ye-1976 yalesi sikhala sombala esithile esetyenziswe ukutshintshela ukusebenza kwezinye izithuba zombala. Ngokuqhelekileyo kuncinci kwaye ngenxa yoko yinkampani ezininzi ezinokuzisebenzisa njengoko zihlala ziba nenani lepesenti ephezulu kunezinye.
Ngoko, ukulinganisa imibala ehlukeneyo yebalazwe ngokwemiqathango yabo yohlobo oluncinci lombala obuncinci kunazo zonke kuya kuba: CIE 1976 Iindwendwe zivame ukulinganiswa kumbala wazo ngepesenti yemibala ephuma kumbala wemibala ekhoyo. Ngaloo ndlela, iliso elithatyathwe kwi-100% le-NTSC liyakubonisa yonke imibala ngaphakathi kwebala le- NTSC yombala. Iskrini ene-50% ye-NTSC yombala wombala iyakubonisa kuphela isiqingatha salezo mibala. Umboniso wekhompyutheni wekhompyutha uza kubonisa malunga ne-70 ukuya ku-75% yebala le-NTSC yombala. Oku kuhle kubantu abaninzi njengoko basebenzisa umbala abaye babona ngaphezu kweminyaka kwimithombo yeTV nakwividiyo. (I-72% ye-NTSC ilingana ne-100% yombala we-sRGB.) I-CRTs ezisetyenziselwa ezininzi zee-televisions zamathambo ezindala kunye nabagadi bambala zivelise ubuninzi bombala we-70%. Abo bakhangele ukusebenzisa umboniso womsebenzi wesicatshulwa kwi-hobby okanye ubugcisa mhlawumbi bafuna into enomqolo omkhulu. Le yilapho amaninzi ombala ophezulu okanye omtsha weembonakaliso ze-gamut sele edlala. Ukuze isibonakaliso sibhalwe njenge-gamut ebanzi, ngokubanzi kufuneka ivelise ubuncinane i-92% ye-NTSC yemibala yebala. Ukubuyiselwa komkhanya kwe-LCD yinto ebalulekileyo ekuqaliseni umbala wayo wokubala. I-backlight eqhelekileyo esetyenziswa kwi-LCD yiCCFL (Ukukhanya kwe-Coldde Fluorescent Light). Ezi zinokuvelisa ngokubanzi malunga ne-75% ye-NTSC yemibala yembala. Izibane zeCCFL eziphuculweyo zingasetyenziselwa ukuvelisa i-100% ye-NTSC. Ukukhanyisa okutsha kwe-LED kukwazi ukuvelisa imveliso engaphezulu kwe-100% ye-NTSC. Xa uthetha ukuba, ezininzi ze-LCD zisebenzisa i- LED inkqubo engabonakaliyo evelisa izinga eliphantsi lombala we-gamut olukufuphi neCCFL eqhelekileyo. Ukuba umbala we- LCD wombala ubaluleke kakhulu kwiikhompyuter yakho, kubalulekile ukufumanisa ukuba umbala ongakanani omele uwakalise. Amacandelo ovelisi abonisa uluhlu lwemibonakalo ayiluncedo kwaye ayilunganga xa kufikelele ekubhekeleni koko abakuboniswayo ngokubhekiselele kwinto abanokuyibonisa ngayo. Ngenxa yoko, abathengi kufuneka bafunde ngokwenene umbala webala lomdlalo. Oku kuya kunika abathengi ukubonakaliswa okubhekiselele kokubhekisele kweso siqendu ngokwenza umbala. Qinisekisa ukuba uyazi ukuba yintoni ipesenti kunye nombala we-gamut ukuba ipesenteji isekelwe kuyo. Nantsi uluhlu olukhawulezayo lweendawo eziqhelekileyo zamanqanaba ahlukeneyo okubonisa: Ekugqibeleni, omnye kufuneka akhumbule ukuba la manani avela apho umboniso ulungeleleneyo. Uninzi lubonakalisa xa zithunyelwa zihamba ngokukhawulelana kombala obalulekileyo kwaye ziya kukhishwa kancinci kwenye yezinye iindawo. Ngenxa yoko, nabani na abafuna iqondo elichanekileyo lombala baya kufuna ukulinganisa ukubonisa kwakho ngeefayile ezifanelekileyo kunye nohlengahlengiso usebenzisa ithuluzi lokulinganisa . Uluphi uhlobo lweMpawu yeGamut ye-Display?
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