Greyscale yog hais txog lub ntsiab lus tseem ceeb uas siv los sawv cev rau kev hloov xim ci ci hauv kev ua duab. Grayscale feem ntau yog nyob ntawm 0 txog 255, qhov twg 0 sawv cev rau cov xim dub, 255 sawv cev dawb, thiab cov lej nyob nruab nrab ntawm qhov sib txawv ntawm grey. Qhov siab dua tus nqi grayscale, qhov ci ntawm daim duab; qhov qis dua tus nqi grayscale, qhov tsaus dua daim duab.
Grayscale qhov tseem ceeb tau qhia raws li cov lej yooj yim, tso cai rau cov khoos phis tawj kom txiav txim siab sai thiab hloov kho thaum ua cov duab. Qhov kev sawv cev ntawm tus lej no ua kom yooj yim rau qhov nyuaj ntawm kev ua cov duab thiab muab kev muaj peev xwm rau ntau tus duab sawv cev.
Greyscale feem ntau yog siv hauv kev ua cov duab dub thiab dawb, tab sis nws kuj ua lub luag haujlwm tseem ceeb hauv cov duab xim. Qhov greyscale tus nqi ntawm cov duab xim yog xam los ntawm qhov hnyav nruab nrab ntawm peb xim ntawm RGB (liab, ntsuab, thiab xiav). Qhov nruab nrab qhov hnyav no feem ntau siv peb qhov hnyav ntawm 0.299, 0.587, thiab 0.114, sib xws rau peb xim liab, ntsuab, thiab xiav. Txoj kev hnyav no stems los ntawm qhov sib txawv rhiab heev ntawm tib neeg lub qhov muag rau cov xim sib txawv, ua rau cov duab hloov dua siab tshiab grayscale ntau dua nyob rau hauv txoj kab nrog cov yam ntxwv ntawm tib neeg lub qhov muag.
Greyscale ntawm LED zaub
LED zaub yog cov khoom siv dav siv hauv kev tshaj tawm, kev lom zem, kev thauj mus los thiab lwm yam. Nws cov nyhuv tso saib yog ncaj qha cuam tshuam rau cov neeg siv kev paub thiab cov ntaub ntawv kis tau tus mob. Hauv LED zaub, lub tswv yim ntawm greyscale yog qhov tseem ceeb tshwj xeeb vim nws cuam tshuam ncaj qha rau cov xim ua haujlwm thiab cov duab zoo ntawm cov zaub.
Lub greyscale ntawm LED zaub yog hais txog kev ua haujlwm ntawm ib qho LED pixel ntawm qhov sib txawv ntawm qhov ci. Qhov sib txawv grayscale qhov tseem ceeb sib haum mus rau qhov sib txawv brightness. Qhov siab dua qib grayscale, cov xim ntau dua thiab cov ntsiab lus uas cov zaub tuaj yeem pom.
Piv txwv li, 8-ntsis greyscale system tuaj yeem muab 256 qib greyscale, thaum 12-ntsis greyscale system tuaj yeem muab 4096 qib grey. Yog li ntawd, ntau qib greyscale tuaj yeem ua rau cov duab LED pom cov duab zoo nkauj dua thiab ntau dua.
Hauv cov lus qhia LED, kev siv greyscale feem ntau yog nyob ntawm PWM (mulse width modulation) thev naus laus zis. PWM tswj qhov ci ntsa iab ntawm LED los ntawm kev kho qhov sib piv ntawm lub sijhawm rau thiab tawm kom ua tiav qib grey nplai sib txawv. Txoj kev no tuaj yeem tsis tsuas yog tswj qhov ci ntsa iab, tab sis kuj txo qis kev siv hluav taws xob zoo. Los ntawm PWM thev naus laus zis, LED zaub tuaj yeem ua tiav cov kev hloov pauv grey nplua nuj thaum tswj kev ci ntsa iab, yog li muab cov duab zoo nkauj dua.
Greyscale
Qib greyscale hais txog cov qib greyscale, uas yog, tus naj npawb ntawm cov qib sib txawv uas cov zaub tuaj yeem pom. Qhov siab dua qib greyscale, qhov ntau dua cov xim ua haujlwm ntawm cov duab thiab cov duab cov ntsiab lus zoo dua. Cov qib ntawm qib greyscale ncaj qha cuam tshuam rau cov xim saturation thiab qhov sib txawv ntawm cov zaub, yog li cuam tshuam rau tag nrho cov duab.
8-ntsis greyscale
Lub 8-ntsis greyscale system tuaj yeem muab 256 qib greyscale (2 mus rau 8 lub zog), uas yog qib greyscale ntau tshaj plaws rau cov duab LED. Txawm hais tias 256 qib greyscale tuaj yeem ua tau raws li cov kev xav tau dav dav, hauv qee qhov kev siv high-end, 8-ntsis greyscale tej zaum yuav tsis tsim nyog txaus, tshwj xeeb tshaj yog thaum tso tawm cov duab siab ntau (HDR).
10-ntsis greyscale
Lub 10-ntsis greyscale system tuaj yeem muab 1024 greyscale theem (2 mus rau 10th lub zog), uas yog qhov muag heev thiab muaj cov xim hloov tau zoo dua li 8-ntsis greyscale. 10-ntsis greyscale tshuab feem ntau siv rau hauv qee qhov kev siv high-end zaub, xws li kev kho mob, kev yees duab, thiab kev tsim yeeb yaj kiab.
12-ntsis greyscale
Lub 12-ntsis greyscale system tuaj yeem muab 4096 qib greyscale (2 mus rau 12th lub zog), uas yog qib greyscale siab heev thiab tuaj yeem muab cov duab zoo nkauj heev. Lub 12-ntsis greyscale system feem ntau yog siv rau hauv qee qhov kev xav tau ntau daim ntawv thov, xws li aerospace, kev saib xyuas tub rog thiab lwm yam haujlwm.
Hauv cov ntxaij vab tshaus LED, qhov kev ua haujlwm grey tsis tsuas yog nyob ntawm kev txhawb nqa kho vajtse, tab sis kuj xav tau kev koom tes ntawm software algorithms. Los ntawm kev ua cov duab ua tiav qib siab, qhov kev ua haujlwm greyscale tuaj yeem ua kom zoo dua ntxiv, kom lub vijtsam zaub tuaj yeem kho qhov tseeb dua ntawm qib siab grey.
Xaus
Greyscale yog ib lub tswv yim tseem ceeb hauv kev ua cov duab thiab cov cuab yeej tso saib, thiab nws daim ntawv thov hauv LED cov ntxaij vab tshaus yog qhov tseem ceeb tshwj xeeb. Los ntawm kev tswj tau zoo thiab kev qhia ntawm greyscale, LED cov ntxaij vab tshaus tuaj yeem muab cov xim nplua nuj thiab cov duab ilv, yog li txhim kho tus neeg siv qhov pom kev. Hauv kev siv tswv yim, kev xaiv ntawm qib greyscale sib txawv yuav tsum tau txiav txim siab raws li kev siv tshwj xeeb thiab cov ntawv thov scenarios kom ua tiav cov txiaj ntsig zoo tshaj plaws.
Kev siv greyscale ntawm LED cov ntxaij vab tshaus feem ntau yog nyob ntawm PWM thev naus laus zis, uas tswj qhov ci ntsa iab ntawm LEDs los ntawm kev kho qhov sib piv ntawm lub sijhawm hloov ntawm LEDs kom ua tiav qib grey sib txawv. Cov theem ntawm greyscale ncaj qha cuam tshuam rau cov xim ua haujlwm thiab cov duab zoo ntawm lub vijtsam. Los ntawm 8-ntsis greyscale mus rau 12-ntsis greyscale, daim ntawv thov ntawm cov qib grayscale sib txawv raws li cov zaub xav tau ntawm ntau qib.
Feem ntau, kev txhim kho tsis tu ncua thiab kev nce qib ntawm greyscale technology muab kev dav duadaim ntawv thov prospect rau LED zaub screen. Nyob rau hauv lub neej yav tom ntej, nrog kev txhim kho ntxiv ntawm cov duab ua thev naus laus zis thiab kev txhim kho txuas ntxiv ntawm kev ua haujlwm kho vajtse, kev ua haujlwm greyscale ntawm LED cov ntxaij vab tshaus yuav ua tau zoo dua, ua rau cov neeg siv pom kev pom kev poob siab dua. Yog li ntawd, thaum xaiv thiab siv cov ntxaij vab tshaus LED, kev nkag siab tob thiab tsim nyog ntawm kev siv tshuab greyscale yuav yog tus yuam sij rau kev txhim kho cov duab zoo.
Post lub sij hawm: Sep-09-2024
