I-Grayscale ibhekisa kumbono obalulekileyo osetyenziselwa ukumela utshintsho lokukhanya kombala ekusetyenzweni komfanekiso. Amanqanaba angwevu aqhele ukususela ku-0 ukuya ku-255, apho u-0 umele abamnyama, ama-255 amele abamhlophe, aze amanani aphakathi amele idigri ezingwevu. Ukuphakama kwexabiso le-grayscale, umfanekiso ukhanya ngakumbi; okukhona lisezantsi ixabiso le-grayscale, kokukhona umfanekiso usiba mnyama.
Amaxabiso egreyscale abonakaliswa njengeenombolo ezilula, ezivumela iikhompyuter ukuba zenze izigqibo ngokukhawuleza kunye nohlengahlengiso xa kusetyenzwa imifanekiso. Olu phawu lwamanani lwenza lula kakhulu ukuntsonkotha kokulungiswa kwemifanekiso kwaye lubonelela ngamathuba okumelwa kwemifanekiso eyohlukeneyo.
I-Grayscale isetyenziswa kakhulu ekuqhutyweni kwemifanekiso emnyama nemhlophe, kodwa nayo idlala indima ebalulekileyo kwimifanekiso yombala. Ixabiso le-grayscale lomfanekiso wombala libalwa nge-avareji enobunzima bezinto ezintathu zemibala ye-RGB (obomvu, oluhlaza, nobhlowu). Lo mndilili wobunzima udla ngokusebenzisa iintsimbi ezintathu zika-0.299, 0.587, kunye no-0.114, ezihambelana nemibala emithathu ebomvu, eluhlaza, nebhlowu. Le ndlela yokulinganisa isuka kubuntununtunu obuhlukeneyo beliso lomntu ukuya kwimibala eyahlukeneyo, okwenza umfanekiso wegreyscale oguqulweyo uhambelane ngakumbi neempawu ezibonakalayo zeliso lomntu.
Ubungakanani obungwevu bomboniso we-LED
Umboniso we-LED sisixhobo sokubonisa esisetyenziswa ngokubanzi kwiintengiso, ukuzonwabisa, ukuthutha kunye nezinye iindawo. Umphumo wayo wokubonisa uhambelana ngqo namava omsebenzisi kunye nesiphumo sokudlulisa ulwazi. Kumboniso we-LED, ingcamango ye-grayscale ibaluleke kakhulu kuba ichaphazela ngokuthe ngqo ukusebenza kombala kunye nomgangatho womfanekiso wesiboniso.
I-grayscale yesibonisi se-LED sibhekiselele ekusebenzeni kwepixel ye-LED enye kumanqanaba okukhanya ahlukeneyo. Amaxabiso ahlukeneyo egreyscale ahambelana nemigangatho eyahlukeneyo yokuqaqamba. Okukhona uphezulu umgangatho ongwevu, kokukhona umbala otyebileyo kunye neenkcukacha ezinokuboniswa ngumboniso.
Ngokomzekelo, inkqubo ye-8-bit grayscale inokubonelela ngamanqanaba angama-256 egreyscale, ngelixa inkqubo ye-12-bit grayscale inokubonelela nge-4096 amanqanaba e-grayscale. Ke ngoko, amanqanaba aphezulu e-grayscale anokwenza umboniso we-LED ubonise ngokulula kunye nemifanekiso yendalo.
Kwimiboniso ye-LED, ukuphunyezwa kwe-grayscale ngokuqhelekileyo kuxhomekeke kwi-PWM (i-pulse wide modulation) iteknoloji. I-PWM ilawula ukuqaqamba kwe-LED ngokulungelelanisa umlinganiselo wexesha lokuvula nokucima ukuze kuphunyezwe amanqanaba angwevu ahlukeneyo. Le ndlela ayikwazi ukulawula ngokuchanekileyo kuphela ukukhanya, kodwa kunye nokunciphisa ngokufanelekileyo ukusetyenziswa kwamandla. Ngetekhnoloji ye-PWM, iziboniso ze-LED zinokufikelela kutshintsho olutyebileyo lwe-grayscale ngelixa zigcina ukuqaqamba okuphezulu, ngaloo ndlela zibonelela ngesiphumo sokubonisa umfanekiso obuthathaka ngakumbi.
Imibala engwevu
I-Grade grayscale ibhekiselele kwinani lamanqanaba e-grayscale, oko kukuthi, inani lamanqanaba okukhanya ahlukeneyo anokuboniswa ngumboniso. Okukhona ibakala elingwevu liphezulu, kokukhona ukutyeba kombala wokuboniswa kokukhona neenkcukacha zomfanekiso. Umphakamo webakala elingwevu lichaphazela ngokuthe ngqo ukuzaliseka kombala kunye nochasano lwesibonisi, ngokwenza oko kuchaphazela isiphumo sokubonisa ngokubanzi.
8-bit grayscale
Inkqubo ye-8-bit ye-grayscale inokubonelela ngama-256 amanqanaba e-grayscale (2 ukuya kumandla we-8), eyona nqanaba i-grayscale eqhelekileyo kwiziboniso ze-LED. Nangona amanqanaba e-grayscale angama-256 angahlangabezana neemfuno zokubonisa ngokubanzi, kwezinye iinkqubo eziphezulu, i-8-bit grayscale isenokungabi buthathaka ngokwaneleyo, ngakumbi xa ibonisa uluhlu oluphezulu lwemifanekiso (HDR).
I-10-bit grayscale
Inkqubo ye-10-bit greyscale inokubonelela nge-1024 amanqanaba e-grayscale (i-2 ukuya kumandla we-10), ethambileyo kwaye inokutshintsha kombala ogudileyo kuno-8-bit grayscale. Iinkqubo ze-10-bit grayscale zihlala zisetyenziswa kwezinye iinkqubo zokubonisa eziphezulu, ezifana nemifanekiso yezonyango, ukufota ngobungcali, kunye nokuveliswa kwevidiyo.
I-12-bit grayscale
Inkqubo ye-12-bit grayscale inokubonelela nge-4096 amanqanaba e-grayscale (2 ukuya kumandla we-12), ekumgangatho ophezulu kakhulu we-grayscale kwaye inokubonelela ngokusebenza komfanekiso obuthathaka kakhulu. Inkqubo ye-12-bit greyscale isoloko isetyenziswa kwezinye izinto ezibonisa imfuno emandla, ezifana ne-aerospace, ukujonga emkhosini kunye nezinye iindawo.
Kwizikrini zokubonisa i-LED, ukusebenza kwe-grayscale akuxhomekeke kuphela kwinkxaso ye-hardware, kodwa kufuna intsebenziswano ye-algorithms yesofthiwe. Ngokusebenzisa ii-algorithms zokusetyenzwa kwemifanekiso ephucukileyo, ukusebenza kwegreyscale kunokwandiswa ngakumbi, ukuze isikrini sokubonisa singakwazi ukubuyisela ngokuchanekileyo indawo yokwenyani kwinqanaba eliphezulu legreyscale.
Ukuqukumbela
I-Grayscale yingcamango ebalulekileyo ekuqhutyweni komfanekiso kunye neteknoloji yokubonisa, kwaye ukusetyenziswa kwayo kwizikrini zokubonisa i-LED kubaluleke kakhulu. Ngolawulo olusebenzayo kunye nokubonakaliswa kwegreyscale, izikrini zokubonisa i-LED zinokubonelela ngemibala etyebileyo kunye nemifanekiso ethambileyo, ngaloo ndlela iphucula amava abonakalayo omsebenzisi. Kwiinkqubo ezisebenzayo, ukhetho lwamanqanaba ahlukeneyo e-grayscale kufuneka agqitywe ngokweemfuno ezithile zokusetyenziswa kunye neemeko zesicelo ukufezekisa umphumo obalaseleyo wokubonisa.
Ukuphunyezwa kwe-grayscale yezikrini zokubonisa i-LED ikakhulu kuxhomekeke kwi-teknoloji ye-PWM, elawula ukukhanya kwee-LED ngokulungelelanisa umlinganiselo wexesha lokutshintsha kwee-LEDs ukufezekisa amanqanaba ahlukeneyo e-grayscale. Inqanaba legreyscale lichaphazela ngokuthe ngqo ukusebenza kombala kunye nomgangatho womfanekiso wesikrini sokubonisa. Ukusuka kwi-8-bit grayscale ukuya kwi-12-bit grayscale, ukusetyenziswa kwamanqanaba ahlukeneyo e-grayscale kuyahlangabezana neemfuno zokubonisa kumanqanaba ahlukeneyo.
Ngokubanzi, uphuhliso oluqhubekayo kunye nenkqubela phambili yetekhnoloji yegreyscale ibonelela ngokubanziisicelo ithemba lokubonisa izikrini ze-LED. Kwixesha elizayo, kunye nokuphucula ngakumbi iteknoloji yokucwangcisa umfanekiso kunye nokulungiswa okuqhubekayo kokusebenza kwe-hardware, ukusebenza kwe-grayscale yezikrini zokubonisa i-LED kuya kuba yinto ebalaseleyo, ukuzisa abasebenzisi amava abonakalayo amangalisayo. Ngoko ke, xa ukhetha kwaye usebenzisa izikrini zokubonisa i-LED, ukuqonda okunzulu kunye nokusetyenziswa okufanelekileyo kweteknoloji ye-grayscale kuya kuba ngundoqo ekuphuculeni umphumo wokubonisa.
Ixesha lokuposa: Sep-09-2024
