U-GrayScale ubhekisela emqondweni obalulekile osetshenziselwa ukumela ukuguqulwa kokukhanya kombala ekucutshungweni kwezithombe. Amazinga we-Grayscale avela kusuka ku-0 kuye ku-255, lapho u-0 amele umnyama, ama-255 amele mhlophe, futhi izinombolo ezisezingeni eliphakathi zimelela ama-degree ahlukile. Inani eliphakeme le-grayscale, kuqhakaza isithombe; Inani le-grayscale, laba mnyama isithombe.
Amanani we-Grayscale avezwa njengezinombolo ezilula, evumela amakhompyutha ukuthi enze ngokushesha izinqumo kanye nokulungiswa kwezithombe lapho zicubungula izithombe. Lokhu kumelwa kwezinombolo kwenza lula ubunzimasi bokusebenza kwezithombe futhi kunikeze amathuba okumelwa kwesithombe okuhlukahlukene.
I-GrayScale isetshenziswa ikakhulukazi ekucutshungulweni kwezithombe ezimnyama nezimhlophe, kepha futhi idlala indima ebalulekile ezithombeni zombala. Inani le-grayscale lesithombe sombala libalwa ngesilinganiso esinesisindo sezinto ezintathu zombala ze-RGB (ebomvu, eluhlaza okotshani kanye nohlaza okwesibhakabhaka). Lesi silinganiso esinesisindo sivame ukusebenzisa izinsimbi ezintathu zika-0.299, 0.587, no-0.114, ezihambelana nemibala emithathu yobomvu, eluhlaza okotshani, nohlaza okwesibhakabhaka. Le ndlela yesisindo ivela ekuzwela okuhlukile kweso lomuntu kuya imibala ehlukene, okwenza isithombe esiguquliwe se-greyscale sihambisane nezimpawu ezibonakalayo zeso lomuntu.
I-grayscale yokuboniswa kwe-LED
Ukuboniswa kwe-LED yithuluzi lokubonisa elisetshenziswe kabanzi ekukhangiseni, ezokuzijabulisa, ezokuhamba nakwezinye izinkambu. Umphumela waso wokubonisa uhlobene ngqo nesipiliyoni somsebenzisi kanye nomphumela wokuhambisa ulwazi. Kuboniswa ku-LED, umqondo we-grayscale ubaluleke kakhulu ngoba uthinta ngqo ukusebenza kombala kanye nekhwalithi yesithombe yesibonisi.
I-Greycale yesibonisi se-LED isho ukusebenza kwe-pixel eyodwa ye-LED emazingeni ahlukene wokukhanya. Amanani ahlukene we-Grayscale ahambelana namazinga ahlukene wokukhanya. Izinga eliphakeme le-greyscale, okucebile umbala nemininingwane yokuthi isibonisi singakhombisa.
Isibonelo, uhlelo lwe-graysale olu-8-bit lunganikeza amazinga angama-256 ama-grayscale, kuyilapho uhlelo lwe-grayscale olungu-12-bit lunganikeza amazinga angama-4096 ama-grayscale. Ngakho-ke, amazinga aphezulu we-greyscale angenza isibonisi se-LED sibonise izithombe zemvelo ezibushelelezi neziningi.
Ezinkomeni ze-LED, ukusetshenziswa kwe-grayscale kuvame ukwethenjwa kubuchwepheshe be-PWM (Pulse Width Modulation). I-PWM ilawula ukugqama kwe-LED ngokulungisa isilinganiso sesilinganiso se-on the and off isikhathi ukufeza amazinga ahlukile we-grayscale. Le ndlela ayikwazi ukulawula ngokunembile ukugqama, kepha futhi inciphise ngokuphumelelayo ukusetshenziswa kwamandla. Ngokusebenzisa ubuchwepheshe be-PWM, ukuboniswa kwe-LED kungafinyelela izinguquko ezicebile ze-grayscale ngenkathi kugcinwa ukukhanya okuphezulu, ngaleyo ndlela kunikeze umphumela wokubonisa wesithombe obucayi.
Grayscale
Ibanga Grayscale lisho inani lamazinga ama-greyscale, okungukuthi, inani lamazinga ahlukene wokukhanya okuboniswayo okuboniswayo. Lapho ukhuphuka ibanga lebanga le-grayscale, ukucebisa ukusebenza kombala kwesibonisi kanye nokwenza imininingwane yesithombe. Izinga lebanga le-graysale lithinta ngqo ukugcwala kombala kanye nokwehluka kwesibonisi, ngaleyo ndlela kuthinte umphumela wokubonisa ophelele.
8-bit grayscale
Uhlelo lwe-graysale olu-8-bit lunganikeza amazinga angama-256 ama-grayscale (2 kumandla we-8), okuyileveli ejwayelekile kakhulu ye-grayscale yokuboniswa kwe-LED. Yize amazinga angama-256 ama-grayscale angahlangabezana nezidingo zokubonisa okujwayelekile, kwezinye izinhlelo zokusebenza eziphezulu, ama-graysale angu-8-bit angeke acasuke ngokwanele, ikakhulukazi lapho ekhombisa izithombe eziphakeme (HDR).
I-10-bit grayscale
Uhlelo lwe-graysale olu-10-bit lunganikeza amazinga we-grayscale angama-1024 (2 kuya kumandla we-10), okubucayi ngokwengeziwe futhi anokubushelela kombala okubushelelezi kune-8-bit grayscale. Izinhlelo eziyi-10-bit grayscale zivame ukusetshenziswa kwezicelo ezithile zokubonisa eziphakeme, njengokucabanga kwezokwelapha, izithombe zobungcweti kanye nokukhiqizwa kwevidiyo.
I-12-bit grayscale
Uhlelo lwe-graysale olungu-12-bit lunganikeza amazinga angama-4096 ama-greyscale (2 kuya kumandla we-12), okuyizinga eliphakeme kakhulu le-grayscale futhi anganikeza ukusebenza kwezithombe ezibucayi kakhulu. Uhlelo lwe-graysale lwe-12-bit luvame ukusetshenziswa kwezicelo ezithile ezifunwa kakhulu, njenge-aerospace, ukuqapha amasosha kanye nezinye izinkambu.
Ezikrinini zokubonisa ze-LED, ukusebenza kwe-grayscale akugcini ngokuncika ekuxhasweni kwe-Hardware, kepha futhi kudinga ukubambisana kwama-algorithms wesoftware. Ngokusebenzisa ama-algorithms athuthukile okusetshenzelwa ama-algorithms, ukusebenza kwe-grayscale kungenziwa kusetshenziswe futhi, ukuze isikrini sokubonisa singabuyisela kahle isimo sangempela esisezingeni eliphakeme le-grayscale.
Ukugcina
I-GrayScale ngumqondo obalulekile ekucutshungweni kwezithombe futhi ubonise ubuchwepheshe, kanye nesicelo sayo kwizikrini zokubonisa eziholwayo zibaluleke kakhulu. Ngokulawula okusebenzayo kanye nokuvezwa kwe-grayscale, izikrini zokubonisa ze-LED zinganikeza imibala ecebile nezithombe ezintekenteke, ngaleyo ndlela zithuthukise umuzwa wokubuka womsebenzisi. Kuzinhlelo zokusebenza ezisebenzayo, ukukhethwa kwamazinga ahlukene ama-greyscale kudingeka kunqunywe ngokuya ngezidingo ezithile zokusebenzisa kanye nezimo zohlelo lokusebenza ukufeza umphumela omuhle kakhulu wokubonisa.
Ukuqaliswa kwe-GreyCale kwezikrini zokubonisa ze-LED zithembele kubuchwepheshe be-PWM, elilawula ukugqama kwama-LED ngokulungisa isilinganiso sesikhathi sokushintsha ama-LEDs ukufeza amazinga ahlukile we-GRIMSALE. Izinga le-grayscale lithinta ngqo ukusebenza kombala kanye nekhwalithi yesithombe sesikrini sokubonisa. Kusuka ku-8-bit grayscale kuya ku-12-bit grayscale, ukusetshenziswa kwamazinga ahlukene ama-greyscale ahlangabezana nezidingo zokubonisa emazingeni ahlukene.
Ngokuvamile, ukuthuthuka okuqhubekayo kanye nenqubekela phambili yobuchwepheshe be-grayscale kunikeza abanziisicelo ithemba lezikrini zokubonisa ze-LED. Ngokuzayo, ngokuthuthuka okwengeziwe kobuchwepheshe bokucubungula isithombe kanye nokwenza kahle okuqhubekayo kokusebenza kwehadiwe, ukusebenza kwe-grayscale yezikrini zokubonisa ze-LED zivelele, zilethe abasebenzisi okuhlangenwe nakho okubonakalayo okwethusayo. Ngakho-ke, lapho ukhetha futhi usebenzisa izikrini zokubonisa ze-LED, ukuqonda okujulile nokusetshenziswa okunengqondo kobuchwepheshe be-grayscale kuzoba yisihluthulelo sokwenza ngcono umphumela wokubonisa.
Isikhathi sePosi: Sep-09-2024
