Kev sib tham ntawm Txheem Xim Daus ntawm Prepress Cov Ntaub Ntawv Xov Xwm
Peb yog ib lub lag luam loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv nyuaj, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Rau niaj hnub no cov ntaub ntawv xov xwm cov ntaub ntawv, tus qauv digital cov duab archives yog muab los yog qhib siv ntau hom kev qhia sib txawv, thiab muab xa tau los ntawm ib qho software mus rau lwm qhov los ntawm ib qho chaw rau ib qho. Nws yog ib txoj kev tsim nyog.
Cov duab no tuaj yeem muab kev ntsuam xyuas lub hom phiaj ntawm cov duab hauv kev ua duab, kev ua haujlwm, thiab cov duab zoo hauv lub ntsej muag cov xim tawm kev xws li luam tawm, ntawv pov thawj, faxing, thiab lwm yam, thiab tseem tuaj yeem encode cov duab thiab cov ntaub ntawv. Tus nqi sib piv, los yog cov ntaub ntawv xa tawm mus rau kev ntsuam xyuas; tsis tas li ntawd, qhov kev coj tau ua rau ntawm cov luam tawm uas tau raug rau cov txheej txheem luam ntawv los yog cov zis tawm ncaj. Cov kob reproductions system xim muaj peev xwm ua tau zoo los sis phem, muaj ob txoj hauv kev txiav txim. Ua ntej, qhov kev ntsuam xyuas tus kheej ntawm cov lus tso tawm kawg (xws li xim); Ob, hom phiaj ntsuas los ntawm qhov ntsuas tau ntawm qhov ntsuas ntsuas xim.
Txuj xim cov dluab yuav ntxhib raus cais ua ob hom: natural images thiab synthetic images. Cov duab thaij duab muaj xws li cov teeb meem loj xws li cev nqaij daim tawv, cov xim ci siab, cov xim tsaus ntuj, cov xim nruab nrab, cov xim ntoo-tawv, cov cim xim, thiab cov qauv duab. Cov duab tsis zoo xws li cov qauv kev ntsuas kev sib tw, cov cim xim, cov duab kos los ntawm cov xim thawj thiab qib siab, thiab CMYK plaub hom xim luam tawm.
Tag nrho cov qauv duab xim yog muab faib ua ob txoj hau kev encoding. Nyob hauv thawj txoj kev cim, qhov kev daws teeb meem ntawm cov duab yog 16 pixels ib millimeter, tus nqi cim yog 28 kom 0% ntawm cov ntawv luam tawm (dub), thiab 228 yog 100% ntawm tus nqi luam tawm (dawb). Hauv qhov ob hom kev cim, qhov kev daws teeb meem ntawm cov duab yog 12 pixels ib millimeter, qhov nqi cim yog 0 rau 0% ntawm cov ntawv luam tawm (dub), thiab 255 yog 100% ntawm tus nqi luam tawm (dawb).
Tom qab qhov txheej txheem ntawm kev sau ntawv, qhov tau txais cov ntaub ntawv yuav nkag mus rau hauv CD-ROM, thiab cov ntaub ntawv hom ntawv yog TIFF / IT cov ntaub ntawv (ISO12639).
Txuj xim duab nta
Rau kev siv cov xim txheem dluab, muaj ntau ntau yam:
(1) Tus nqi ntawm cov ntaub ntawv tuaj yeem lees paub
Qhov me me ntawm cov duab digital yog qhov tsawg. Los ntawm kev ntxiv tag nrho cov khoom, koj tuaj yeem tshawb xyuas seb tus duab puas yuav hloov siab los yog rov qab ua ntej thiab tom qab duab ua tiav.
(2) Xim cov kab ke
Cov xim hauv daim duab, txawm tias nws yuav tsum luam tawm lossis muab cia rau hauv cov ntaub ntawv khaws cia, tswj tau.
(3) Xim qhov tseem ceeb
Yog li, txhua pixel hauv daim duab yog muab rau ib txoj hauj lwm thiab xim muaj nuj nqis, uas yog sawv cev los ntawm ib tus qauv Numeric. Qhov chaw ib txwm yog 8 khoom rau ib chav pixel, uas yog, 256 xim. Rau ntau qhov tseem ceeb, koj tuaj yeem txheeb xyuas lawv qhov ntau.
(4) Cov kev pab them nqi Network
Qhov sib npaug ntawm qhov chaw uas tau them los ntawm cov teev hauv daim duab, thaj tsam li 0% txog 100%. Nws yog tsim nyog teev tias qhov feem ntawm cov duab zoo tshaj plaws muaj qhov tsawg tshaj plaws ntawm lub network, uas ze ze lossis sib npaug li 0%. Qhov tsaus ntuj ntawm daim duab muaj cov kev pab loj tshaj, ze los yog sib npaug li 100%.
(5) Tag nrho xim hloov ntawm daim duab
Cov kev sib raug zoo ntawm cov xim tus nqi ntawm thaj chaw xaiv ntawm daim duab thiab xim tus nqi ntawm tas cov duab. Ntawd yog, cov duab cov duab tau muab kho rau nyias qhov xim ntawm ib cheeb tsam twg hauv daim duab.
(6) Gray tshuav nyiaj li cas
Hauv kev nthuav tawm xim, yog tias peb lub ntsiab xim ncav cuag tus nqi seem, qhov nruab nrab ntawm qhov nruab nrab tsis muaj peev xwm ua tiav. Npe nruab nrab tsis muaj xim zoo nkauj uas pom tau yooj yim vim tias tib neeg lub qhov muag yog qhov tshwj xeeb tshaj yog qhov grey. Thaum twg daim duab tiav, yog tias qhov xim nruab nrab ntawm qhov xim nruab nrab thiab cov ntawv tsis zoo ib yam, ces qhov kev ntsuam xyuas ntawm cov xim yuav tsum yog qhov tseeb.
(7) Xim Scanner (Xim Qhov Teeb Tseg)
Ib qho xim scanner uas nyeem ib daim duab rau hauv ib qho hluav taws xob digital teeb tsa raws li qhov xav los yog kis tau los ntawm lub teeb rau ntawm daim duab. Cov teeb meem digital no muaj feem xyuam rau thaj tsam ntawm cov duab tag nrho.
(yim) nyeem ntawv kev taw qhia
Cov ntsiab lus ntawm tus qauv xim duab yog txoj cai-nyeem ntawv thaum nws nyeem.
(9) Pixels
Pixel yog tsim los ntawm ob tug tsiaj ntawv, Daim duab thiab Element. Nws yog ib chav tsev rau xam cov duab cov duab. Ib yam li cov duab ntawm kev yees duab, digital cov dluab kuj muaj kev nruam ntawm lub teeb; Yog tias koj zoom rau hauv daim duab ob peb zaug, koj yuav pom tau hais tias cov kev sib nrauj tones no yeej muaj li ntawm ntau me me plaub fab uas muaj xim zoo nkauj. Cov koog me me yog cov duab uas tsim cov duab. Yam tsawg kawg nkaus "pixel".
Daim duab daws teeb meem tawm hauv pixels ib nti (pixels). Thaum twg cov duab luam tawm los yog tso tawm, cov xov tooj ntawm cov duab thiab qhov daws teeb meem ntawm qhov pom tseeb qhov siab thiab dav uas tshwm nyob rau ntawm daim ntawv luam tawm. Yog li ntawd, rau cov dluab ntawm tib qho taw tes, qhov siab dua qhov daws teeb meem, cov duab me me yuav tsum.
(10) Hauv lub pixel, qhov kev txiav txim ntawm plaub xim ntawm cyan, magenta, daj thiab dub
Nyob rau hauv daim duab, ua ke ntawm cyan, magenta, daj, thiab dub dub ntawm txhua pixel yog teem nyob rau tib yam thiaj li tom ntej uas nyob ib sab pixel.
(11) tus nqi teev rau khoom (chaw pib)
Qhov laj txheej grayscale faib ntawm daim duab no yog ua kom pom cov duab raws li nws cov grey. Feem ntau grayscale division faib cov duab ua ob qhov tseem ceeb.
Cov duab uas yuav tsum muaj kev paub txog cov ntawv nyeem los yog kev sib tsoo ntawm qhov sib piv yuav siv tau los ua kom yooj yim rau ib qho yooj yim, yog li xaiv tus nqi tsim nyog thiab qhov tseeb yog qhov tseem ceeb.
Kev piav qhia thiab txhais cov ntsiab lus ntawm cov qauv xim
Duab cov ntaub ntawv muab faib ua ob hom ntawm cov ntaub ntawv digital: encoding:
Thawj, thiab lub ntsiab coding, muaj ntau ntawm cov ntaub ntawv muaj nqis nruab nrab ntawm 28 mus rau 228, sib nug xov mus rau 0% thiab 100% dot coverage. Cov ntaub ntawv tau sampled hauv 128 hli x 160 hli duab ntawm ib zaus ntawm 16 pixels / hli (406 pixels / in).
Qhov thib ob, kuj muaj kev thij ob txoj haujlwm, muaj nqi txog 0 txog 255, sib thooj li 0% thiab 100% ntawm qhov kev pabcuam dot. Cov ntaub ntawv tau sampled hauv 128 hli x 160 hli duab ntawm ib zaus ntawm 12 pixels / hli (305 pixels / in).
Los ntawm cov saum toj ob lub qauv xim duab coding, cov duab digitized generated los ntawm lub tshuab xam zauv muaj phto-graphed thiab cov duab hluavtaws.
ISO12640 siv thawj cov duab cim coding los tsim cov duab yim huab, qhov code npe yog N1 ~ N8; thiab cov duab thib ob ntawm cov duab cim tsim tawm cov duab ntuj tsim, ntxiv "Ib tsab ntawv" rau N1 ~ N8 code. Ntawd yog, N1A ~ N8A.
Unnatural images muaj xws li cov kab kos kev daws teeb meem thiab cov xim tha xim. Cov duab tsis zoo uas ua los ntawm thawj tus duab coding hom yog cim raws li S1 ~ S10; thiab cov dluab tsis tau tsim los ntawm ob daim duab coding txoj kev ntxiv nrog rau "Ib tsab ntawv" hauv qhov code npe, uas yog, S1A ~ S10A.
Cov dluab ntawm ntuj muaj cov nram qab no nta:
(1) Duab loj
Thawj qhov code: 2560pixels (ntev) X2048pixels (dav)
Qhov thib ob hom code: 1920pixels (ntev) X1536pixels (dav)
(ob) pixel xim muaj pes tsawg leeg
Nyob rau hauv daim duab, ua ke ntawm cyan, magenta, daj, thiab dub dub ntawm txhua pixel yog teem nyob rau tib yam thiaj li tom ntej uas nyob ib sab pixel.
(peb) xim sib lawv liag
Cyan, Magenta, Daj, thiab Dub.
(4) Qhov tseem ceeb xim
Thawj coding txoj kev: 8-ntsis teeb liab binary, txoj kev sib piv ntawm cov ntaub ntawv pov tseg feem pua. Thaum cov teeb liab tshwm sim yog 28, qhov kev pabcuam doss feem pua yog 0%. Thaum lub teeb liab tshwm sim yog 228, qhov kev pabcuam dot feem pua yog 100%.
Qhov thib ob hom kev cim: 8-ntsis teeb liab binary, txoj kev sib piv ntawm cov ntaub ntawv pov tseg feem pua. Thaum lub teeb liab yog 0, qhov dot qhov feem pua yog 0%. Thaum lub teeb liab tshwm sim yog 255, qhov kev pabcuam dot feem pua yog 100%.
(5) Nyeem cov lus qhia ua duab
Thaum cov duab teeb duab nyeem, nws txoj kev nyeem ntawv pib ntawm sab qaum sab laug ntawm daim duab thiab xaus rau ntawm sab qis txoj cai.
Unnatural images muaj cov nram qab no nta
Hauv cov duab tsis zoo, ib daim ntawv qhia daws teeb meem (daws teeb meem) siv los ntsuam xyuas lub hwj chim ntawm kev tshawb fawb, qhov tshwm sim ntawm lub cev, thiab ntau yam xim uas tau ua tiav nrog cov duab tso tawm. Colorchart yog ib daim ntawv thov txheej rau xim sib piv thiab kev ua yuam kev.
Txuj xim duab yog muab cia rau hauv CD-ROM hom ntawv (Electronicdata)
CD-ROM ntaub ntawv hom ntawv
Cov ntaub ntawv cia rau hauv CD-ROM muaj 36 duab cov ntaub ntawv tawm tswv yim. Cov ntaub ntawv npe yuav raug coj mus raws li lub npe duab. Cov ntaub ntawv 2 qhia tau hais tias cov ntaub ntawv npe, me me, qhov ntev thiab qhov dav, thiab cov duab uas muaj feem xyuam.
Cov ntaub ntawv TIFF (TaggedImageFileFormat) tau tsim los ntawm Microsoft thiab qee cov tuam txhab. Nws tuaj yeem hais tias yuav tsum yog tus qauv rau cov duab ntawm cov duab hauv kev lag luam. Nws yog hloov tau, scalable, portable thiab addable. Ntau thiab ntau lub tuam txhab muab kev koom tes hauv kev ua cov duab siv TIFF cov hom ntaub ntawv, thiab ntau cov tswv yim muaj feem xyuam. Txawm li cas los xij, cov ntawv TIF tsis yog qhov tsis muaj tseeb. Vim nws cov koog ntes, nws yog qhov sib luag thiab nyuaj los tswj lossis qhov kev zov me nyuam dua lwm cov ntaub ntawv tawm tswv yim.
Xaus
Cov kev khiav hauj lwm ua ntej lub operating system tau zoo heev lawm, thiab kev siv cov dluab thiab cov duab tha xim tau nce ntau dua. Ua ke nrog kev siv cov ntaub ntawv hluav taws xob thiab cov ntaub ntawv txauv, kev loj hlob ntawm cov duab thiab cov kev tswj xim xim tau loj hlob ntawm qhov kev ntxhov siab, uas kuj tau coj mus rau qhov sib txawv ntawm cov txheej txheem ua ntej. Yog li ntawd, to taub cov lus qhia ntawm cov duab digital yog qhov tseem ceeb tshaj.
Ua cov neeg ua haujlwm yuav tsum ntsuam xyuas cov duab zoo digital. Lawv tuaj yeem sib piv cov duab qub nrog rau kev ntsuas. Thaum hloov pauv ntawm pixels, qhov zoo tshaj ntawm cov duab scanned feem ntau yuav raug kho txawm tias dhau qhov zoo ntawm tus qauv. Qhov zoo ntawm digital cov duab yog tshwm sim los ntawm ntau yam, nrog rau qhov zoo ntawm daim tseem ciav tus duab, qhov chaw daws teeb meem ntawm lub luam theej duab, lub cuab yeej ntawm lub luam theej duab, qhov kev txawj ntawm tus neeg teb xov tooj, kev daws teeb meem ntawm lub teeb meem, gray tshuav, Qhov chaw piv qhov teeb meem, kev daws teeb meem, kev sib tw, qhov kev ua haujlwm xim thiab lwm yam. Yog li, tsim nyog duab zoo yuav tsum coj mus rau hauv tus account yam xws li tus neeg siv cov kev xav tau, cov kev cai ntawm tus qauv, network infrastructure, thiab tus nqi.
Cov evolution ntawm cov ntaub ntawv yuav muaj kev hloov loj hauv kev cob qhia neeg ua haujlwm cov neeg ua haujlwm. Yuav ua li cas los tswj thiab khaws cov duab cov ntaub ntawv, qhib kev tswj xim, thiab cov kev sib txuas network sib txuas, thiab lwm yam, txhua yam yuav tsum tau ua raws li cov qauv kom muaj peev xwm teb tau rau yav tom ntej.