Ua kom pom tseeb ntawm kev ua xim saturation ntawm ntim cov ntawv luam tawm

Lub hom phiaj ntawm kev ua cov xim saturation ntawm ntim cov ntawv luam tawm

Yuav ua li cas kom phim qhov saturation yog ib feem tseem ceeb ntawm kev ua xim. Rau lub sij hawm-sensitive thiab ntim cov khoom, qhov saturation ntawm cov xim yog tshwj xeeb tshaj yog hais txog, mus txog ib tug ntau dhau theem, yog li ntawd cov xim muaj ib tug muaj zog pom kev cuam tshuam rau cov neeg saib kom txaus siab thiab txaus siab rau. Hauv kev ua cov xim, qee cov duab tuaj yeem nthuav ntau xim hauv tib tus nqi lossis poob ib feem ntawm cov xim, ntxiv dag zog rau cov xim ntawm lwm qhov lossis feem tseem ceeb, thiab qee cov duab tuaj yeem khaws cov xim ntawm txhua xim sib npaug, raws li cov ntsiab lus. ntawm tus thawj thiab lub ntsiab lub cev. Kev kho kom zoo ntawm cov xim xim. Cov txheej txheem thiab qhov tseem ceeb yog raws li nram no:

1. Qhov tob hauv paus xim yog txaus

1) Ua kom tag nrho siv ntau yam xim blocks, xws li liab, ntsuab, xiav thiab lwm yam xim ntawm headers thiab logos, thiab cov xim yooj yim uas tsis xav tau qhov tob. Feem ntau, cov neeg siv khoom xav tau cov xim muaj zog thiab ci ntsa iab rau cov headers thiab logo qauv. . Nyob rau hauv txoj kev xav, nws yog muab tag nrho cov kev ua si rau cov nyhuv ntawm qhov siab tshaj plaws ntawm cov khoom ntom ntom ntawm offset printing number case kom ua tiav qhov siab tshaj plaws saturation. Txawm hais tias 95 feem pua ​​​​ntawm cov dots yuav nce mus rau 100 feem pua ​​​​tom qab luam ntawv, qhov no tsis zoo ib yam li cov nyhuv uas tsim los ntawm 100 feem pua ​​​​tau luam ntawv. 95 feem pua ​​​​ntawm cov dots tsuas yog ncav cuag cov khoom ntom ntom hauv 95 feem pua ​​​​ntawm cov dot cheeb tsam, thaum qhov nce 5 Txawm hais tias muaj tus cwj mem nyob rau hauv feem pua ​​​​ntawm cheeb tsam, tus number case ceev yog thinner. 95 feem pua ​​​​ntawm cov dot nce mus rau 100 feem pua ​​​​cov number case ceev tsis yog tuab thiab vivid li 100 feem pua ​​​​ntawm cov khoom ntom.

2) Cov xim ntawm lub ntuj xiav, dej hiav txwv, nplooj ntsuab, thiab cov nyom hauv toj roob hauv pes duab duab, vim tias lub tswv yim ruaj khov tau tsim nyob rau hauv tib neeg lub siab. Yog li ntawd, nyob rau hauv cov xim ua, nyob rau hauv lub hauv paus ntsiab lus, cov xim ntim ntawm lub C version yuav tsum sib sib zog nqus nyob rau hauv lub hauv paus ntawm yuav tsum tau xim ntim ntawm lub hue. Ib txhia, thiab ntsuab nplooj, nyom thiab lwm yam zaub ntsuab, lub Y version kuj, ua rau ntsuab saturated thiab kaj. Rau cov xim yooj yim ntawm liab, ntsuab, thiab xiav qhov tob uas yuav tsum tau muaj txheej, raws li cov xim hloov thiab grey yam ntxwv ntawm cov offset printing inks, qhov zoo tshaj plaws saturation configuration yog:

Liab =M95 feem pua ​​ntxiv rau Y85 feem pua

Ntsuab=Y95 feem pua ​​ntxiv rau C85 feem pua

Xiav =C95 feem pua ​​​​thiab M80 feem pua

3) Cov yam ntxwv ntawm tus nqi ntawm lub ntuj xiav: Ua ntej, tsis txhob muab Y xim hauv qab 40 feem pua ​​​​ntawm C xim version kom lub ntuj xiav zoo nkauj dua; Thib ob, muab qee qhov Y xim saum toj 50 feem pua ​​​​ntawm C xim version ua rau lub ntuj xiav Tsis muaj xim liab, tab sis lub siab thiab tuab xiav. Nyob rau tib lub sijhawm, txij li lub ntuj xiav tus cwj mem siv tam sim no yog xim liab, xim liab tau txiav txim siab txo qis kom lub ntuj xiav zoo nkauj dua.

4) Cov nplooj liab ntawm Xiangshan nyob rau lub caij nplooj zeeg tuaj yeem ua tiav kom redder dua li cov nplooj liab tiag tiag. Qhov tob tob xim Y yog 100 feem pua ​​​​: M yog 95 feem pua ​​​​, thiab C tuaj yeem nyob ib leeg, kom cov nplooj liab saib zoo nkauj tshwj xeeb hauv qab hnub ci, muab cov neeg zoo siab ntawm kev pom tseeb.

Cov kev hloov pauv saum toj no hauv kev nrhiav cov xim tawg los ntawm cov qauv xim sib txuam thiab qhia txog qhov zoo nkauj ntawm cov xim hauv cov duab kos duab.

2. Sib sib zog nqus xim qib preservation

1) Tus nqi ntawm cov xim ntawm qhov tob ntawm cov xim yog li ntawm 65 mus rau 90 feem pua. Txij li thaum cov dots nce ntau dua 80 feem pua, cov khaubncaws sab nraud povtseg yooj yim rau kev sib koom ua ke. Yog li ntawd, cov xim tseem ceeb ntawm hierarchy yog xav tau rau thaj chaw no. Nyob rau hauv lub premise ntawm kev qhia cov khoom ntom ntom, cov khaubncaws sab nraud povtseg, thiab kev ruaj khov ntawm cov ceev ceev yuav tsum tsis txhob hais txog, ua rau theem ntawm cov xim yooj yim. Cov txheej txheem tseem ceeb: Qhov tob ntawm cov xim yooj yim uas yuav tsum tau muab tso rau hauv, qhov kev ua kom pom tseeb yog kom txo qis cov xim ntim hauv cheeb tsam siab dua 80 feem pua, kom nws cais tawm ntawm cov khoom xim thaiv, kom cov luam ntawv tsis tuaj yeem luam tawm xwb. cov khoom ntom ntom, tab sis kuj tswj cov txheej txheem. .

2) Hauv kev ua xim, nws yog ib qho nyuaj rau sib npaug qhov ci thiab saturation ntawm cov xim nrog lub teeb thiab tsaus theem ntawm cov xim. Yog tias koj xav khaws lub teeb thiab qhov tsaus ntuj hauv cov xim, koj yuav tsum siv cov xim sib xyaw ua ke, thiab thaum siv cov xim ntxiv, qhov vividness ntawm cov xim yuav raug txo. txo qis, greyscale nce. Yog tias koj xav ua kom cov xim ci ntsa iab, nws yog qhov yuav tsum tau muab cov xim sib xyaw ua ke tsawg dua, kom lub teeb thiab tsaus nti hauv cov xim yuav cuam tshuam. Rau kev ua raws sijhawm thiab cov khoom ntim khoom, yuav tsum tau muab tso rau ntawm qhov saturation thiab vividness ntawm cov xim, cuam tshuam rau lub teeb thiab tsaus theem ntawm qee cov xim. Nyob rau hauv txoj kev no, cov duab luam tawm zaum kawg muaj kev nkag siab zoo ntawm cov xim thiab qhov pom kev zoo. Tus yuam sij yog tuav "degree", thiab tuav ntawm "degree" yog qhov kev ua tau zoo ntawm tus neeg teb xov tooj cov qib zoo nkauj, uas ncaj qha cuam tshuam rau kev kos duab ntawm cov xim.

3) Kev ntxhib los mos ntawm cov xim hauv qhov tob yog feem ntau qhia los ntawm cov xim tseem ceeb, xws li liab, txiv kab ntxwv thiab lwm yam xim sov: nws yog qhia los ntawm Y, M xim version; xws li ntsuab, cyan thiab lwm yam xim txias, nws yog qhia los ntawm C xim version. Yog li ntawd, cov txheej txheem ntawm cov xim tseem ceeb yuav tsum tau hais txog, thiab cov yam ntxwv ntawm lub cev txheej txheej yuav tsum tau ua kom pom tseeb.

4) Cov xim yooj yim nyob rau hauv nruab nrab lub suab yog txaus. Lub midtone cheeb tsam muaj lub suab nrov ntawm 35 feem pua ​​​​rau 65 feem pua ​​​​, uas yog qhov tseem ceeb ntawm cov khoom siv feem ntau thiab thaj chaw tseem ceeb ntawm kev ua xim. Txhawm rau kho cov xim yooj yim ntawm cheeb tsam no mus rau qhov zoo tshaj plaws saturation, qhov tseem ceeb yog nyob ntawm seb cov xim xav tau los ntawm cov xim. Tsaus nws li ntawm 5 feem pua, xws li safflower, nws ci thiab nruab nrab-tone M xim xav tau xim ntim ntawm 40 feem pua, thiab tuaj yeem nkag mus tob rau 45 feem pua ​​​​kom cov liab ntau saturated thiab ci.