01 ntawm 06
Grayscale thiab kab kos duab
Grayscale dluab cia qhov tseem ceeb rau theem kev ci ntsa iab xws li cov ntaub ntawv xim. Ib cov duab grayscale raug 256 ntxoov grey xws li 0 (dub) mus txog 255 (dawb).
Dub & Dawb Kab Kos duab feem ntau yog 2-xim (feem ntau yog xim dub thiab dawb) duab kos, kos mem thiab kos cuav, lossis kos duab cwj mem. Hloov ib daim duab rau kab kos duab (raws li pom nyob hauv daim duab) tej zaum yuav ua rau tshwj xeeb cov teebmeem tab sis nrog tsuas dub los yog dawb pixels, cov ntsiab lus ntawm cov duab raug ploj lawm.
Thaum hloov cov duab xim B & W, grayscale duab yog lub hom phiaj.
02 ntawm 06
RGB Duab
Txawm hais tias nws muaj peev xwm luam theej duab xim hauv grayscale los yog siv B & W cov duab (nrog qee cov koob yees duab) ces muab cov xim tsis zoo, feem ntau cov duab peb pib nrog cov xim.
Cov xim scans thiab cov koob yees duab digital yog feem ntau hauv RGB hom ntawv. Yog hais tias tsis yog, nws yog feem ntau hloov ua kom hloov mus rau RGB thiab ua hauj lwm nrog cov duab (editing hauv ib qho software program) hauv hom ntawv ntawd. RGB dluab khaws cov khoom tseem ceeb ntawm xim liab, ntsuab, thiab xiav uas yuav nquag tsim tau cov duab xim. Txhua xim yog ua los ntawm ntau qhov nyiaj liab, ntsuab, thiab xiav.
Qee lub sij hawm nws yog qhov tsim nyog los yog ntshaw kom luam tawm lossis nthuav cov duab dub thiab dawb (grayscale). Yog tias daim duab yuavtsum yog xim, software program xws li Adobe Photoshop lossis Corel Diam duab-Xim yuav siv los hloov cov duab xim rau ib hom ntawv dub thiab dawb.
Muaj ntau txoj kev muaj rau kom tau ib daim duab B & W los ntawm kev yees duab xim.Txawm nws muaj nws tus kheej pros thiab cons thiab zoo siv. Trial thiab yuam kev yog feem ntau qhov zoo tshaj plaws.Lub feem ntau siv cov kev siv yog siv "hloov mus grayscale" los yog "desaturation" (los yog "tshem xim") xaiv nyob rau hauv cov duab editing software.
03 ntawm 06
Hloov mus rau Grayscale
Inkjet printers zoo ib yam li RGB kom koj thiaj li ua tau zoo dua tau luam tawm yog tias koj hloov cov duab rov qab mus rau RGB tom qab mus tom qab mus grayscale - nws tseem yuav ntxoov txho.
Corel Photo-Xim : Duab> Hloov mus rau ...> Grayscale (8-ntsis)
Adobe Photoshop : Duab> Hom> Grayscale
Adobe Photoshop Elements : Duab> Hom> Grayscale (hais tias OK thaum nug "Tshem Cov Ntaub Ntawv Xim Nkaus?")
Jasc Paint Shop Pro : Xim> Grey Nplai
04 ntawm 06
Desaturation (Tshem Xim)
Yog hais tias RGB qhov tseem ceeb ntawm cov duab yog desaturated (xim tshem tawm) qhov tseem ceeb ntawm txhua tus yog tib los yog ze li ntawm tib yam rau txhua xim, uas ua rau lub qhov ntxa nruab nrab tsis nruab nrab.
Desaturation thawb Red, Green, thiab Blue hues rau grey. Daim duab no tseem nyob hauv RGB colorspace, tiam sis cov xim tig grey.Thaum desaturation tau nyob hauv tus duab uas zoo nkaus li grayscale, nws tsis yog.
Corel Diam duab-Xim : Duab> Kho> Desaturate
Adobe Photoshop : Duab> Daws> Desaturate
Adobe Photoshop Elements : Txhim khu> Kho Xim> Tshem Xim
Jasc Paint Shop Pro : Hawj txawm / Saturation> Teeb Lightness rau "0"> Teem Saturation rau "-100"
05 ntawm 06
Grayscale thiab Desaturation thiab Lwm Cov Kev Hloov Tshiab
Nws tuaj yeem sib txawv ntawm ib daim duab mus rau lwm qhov thiab qee qhov sib txawv yuav tsis pom tseeb kom txog rau thaum cov duab luam tawm. Kev sim thiab qhov yuam kev yuav yog txoj hau kev zoo tshaj plaws.
Muaj qee txoj kev los tsim ib qho duab grayscale los ntawm cov duab xim muaj xws li:
- Hloov mus rau LAB hom thiab Extract xwb Luminance channel rau koj dub & dawb. Cov txiaj ntsim zoo nkauj zoo li grayscale hom.
- Extract ib qho ntawm RGB los yog CMYK raws, siv ib los yog sib txuas ob peb txoj hauv kev kom tau cov nyhuv uas koj xav tau.
- Tsis txhob tshem tag nrho cov xim tusyees nrog lub desaturation, siv cov Hawj Los He / Tso Taub Hau kom Desaturate txhua channel ib lub zuj zus rau kev cai cov teebmeem.
- Tsim ib qho monotone (nrog rau xim tsis yog dub) los yog duotone rau ib qho tsis xim, tsis yog dub thiab dawb.
06 ntawm 06
Sau Cov dluab Grayscale ua Black and White Halftones
Thaum luam tawm nrog dub cwj mem, ib daim duab grayscale hloov mus rau ib qho qauv ntawm cov pob zeb dub uas simulates lub tones tas mus li ntawm thawj daim duab. Lighter ntxoov grey muaj tsawg dua los yog me dua dub dots spaced deb sib nrug. Tsaus qhov ntxoov grey muaj ntau dua los yog loj dua cov xim dub uas muaj kev sib raug zoo dua.
Yog li, thaum luam duab grayscale duab nrog dub number case koj yeej yog luam tawm B & W yees duab vim tias half-half yog tsuas dub dots ntawm number case.
Koj tuaj yeem tsim digital halftones ncaj qha los ntawm cov software rau lub tshuab luam ntawv. Siv cov txiaj ntsim ib nrab ntawm lub sijhawm siv tau hauv koj tus PPD daim ntawv luam (PostScript Printer Driver) lossis teev nyob rau hauv koj qhov kev pab cuam software.
Thaum luam tawm B & W cov duab mus rau ib lub tshuab luam ntawv inkjet, cov ntsiab lus tau muab luam tawm nrog cov cim dub los yog cia lub tshuab luam ntawv siv xim thaij los luam cov ntxoov txho. Xim hloov - ntawm negligible rau pom tseeb - tej zaum yuav tshwm sim thaum siv cov xim hauv qab. Txawm li cas los xij, xim dub xwb yuav plam qee cov ntsiab lus tseem ceeb thiab ua rau muaj ntau hom duav ntawm cov cwj pwm - ib qho kev pom dua ib nrab.
Rau luam tawm luam, tso cov duab grayscale hauv grayscale tsuav yog tias koj tus neeg muab kev pabcuam qhia lwm yam. Nyob ntawm txoj kev luam tawm, cov dub thiab dawb ib nrab cov ntxaij vab tshaus muaj ntau dua li ib txhia cov duab ntawv luam tawm tau. Txawm li cas los, koj tuaj yeem qhia koj tus kheej cov ntxaij vab tshaus hauv koj lub software yog tias koj xav tau (los yog tsim cov teeb meem tshwj xeeb).
Saib " Cov xim ntawm cov xim thiab xim dub thiab dawb " rau ntau dua rau kev ua hauj lwm nrog halftones.