Xaiv lub scanner nyob ntawm koj qhov kev xav tau tshwj xeeb. Yog tias koj luam cov ntawv txais nyiaj lossis cov ntaub ntawv, lub tshuab luam ntawv hauv koj lub tshuab luam ntawv tagnrho-hauv-ib yuav yog txhua yam koj xav tau. Yog tias koj yog tus kws kos duab kos duab lossis tus kws yees duab, koj yuav xav tau lub tshuab luam ntawv duab. Yog tias koj tswj hwm lub chaw ua haujlwm, koj yuav tau txais txiaj ntsig los ntawm daim ntawv scanner.
Scanner daws teeb meem thiab xim qhov tob yog qhov tseem ceeb kom nkag siab thaum xav txog kev yuav khoom scanner. Ntawm no yog saib cov ntsiab lus no txhais li cas, thiab yuav ntsuas koj qhov kev tshuaj ntsuam xyuas yuav ua li cas thiaj li yuav lub cuab yeej zoo.
Kev daws teeb meem thiab xim qhov tob yog qhov tseem ceeb rau kev txiav txim siab. Txawm li cas los xij, muaj lwm yam khoom siv scanner los xav txog, xws li seb koj puas xav tau lub tshuab luam ntawv flatbed, lub tshuab luam ntawv scanner, lossis lub tshuab luam ntawv nqa tau.
Optical Scanner daws teeb meem
Nyob hauv scanners, kho qhov muag daws teeb meem yog hais txog tus nqi ntawm cov ntaub ntawv uas lub scanner tuaj yeem sib sau ua ke hauv txhua kab kab rov tav. Hauv lwm lo lus, kev daws teeb meem yog tus lej ntawm cov ntsiab lus uas lub scanner tuaj yeem ntes tau. Kev daws teeb meem yog ntsuas hauv dots ib nti (dpi). Lub dpi siab dua txhais tau tias muaj kev daws teeb meem siab dua thiab cov duab zoo dua nrog cov ntsiab lus ntxiv.
Qhov kev daws teeb meem kho qhov muag zoo ib yam hauv ntau lub tshuab luam ntawv nrog lub peev xwm luam theej duab yog 300 dpi, uas ntau dua li qhov xav tau ntawm cov neeg feem coob. Qhov kev daws teeb meem ntawm cov tshuab luam ntawv ua haujlwm hnyav feem ntau yog 600 dpi. Cov kev daws teeb meem kho qhov muag tuaj yeem mus ntau dua hauv cov kws yees duab scanners, piv txwv li, mus txog 6400 dpi.
Muaj downsides rau high-resolution scans. Cov no tuaj nrog cov ntaub ntawv loj loj, noj ntau qhov chaw ntawm lub computer. Cov ntaub ntawv no yuav siv sij hawm ib pliag los qhib, kho, thiab luam tawm. Tsis tas li ntawd, cov kev daws teeb meem siab loj heev rau email. Txawm li cas los xij, nrog lub computer thiab huab cia tau txais pheej yig dua, qhov no yuav tsis yog qhov teeb meem.
Yog tias koj luam cov duab ntawm qhov kev daws teeb meem siab tshaj plaws, koj tuaj yeem txiav cov duab thiab tseem khaws cov duab zoo rau kev luam ntawv thiab sib koom.
ntsuas qhov kev daws teeb meem koj yuav xav tau
Feem ntau cov tshuab luam ntawv muaj ntau yam kev daws teeb meem, thiab koj tuaj yeem xaiv qhov kev daws teeb meem raug rau txoj haujlwm. Thaum koj xaiv lub scanner, koj yuav tsum paub tias nws qhov kev daws teeb meem yuav tsum siab npaum li cas. Yog tias koj luam theej duab cov ntaub ntawv nkaus xwb, cov no yuav ua kom pom tseeb ntawm 300 dpi thiab yuav tsis pom qhov pom tseeb dua rau cov neeg saib ntawm 6400 dpi.
Web, Email, lossis Internet Siv
Yog tias koj siv koj cov ntawv xa mus rau lub vev xaib lossis email, 300 dpi ntau dua li qhov txaus, vim tias feem ntau lub khoos phis tawj saib pom nyob ib puag ncig 72 dpi (high-res saib pom ntawm dpi siab dua). Yog tias koj luam ib yam dab tsi ntawm qhov kev daws teeb meem siab dua, koj yuav tsis poob dab tsi, tab sis tsis muaj txiaj ntsig tiag tiag.
Duab luam theej thiab luam tawm
Yog tias koj luam cov duab los luam tawm , koj yuav tau txais cov duab zoo los ntawm kev luam ntawm 300 dpi lossis 600 dpi. Yog tias koj npaj kom loj cov duab, siv dpi siab dua. Cov kws yees duab kws tshaj lij yuav xav tau kev daws teeb meem kho qhov muag kom siab li sai tau, tshwj xeeb tshaj yog tias lawv npaj kom loj cov duab.
Txoj cai zoo ntawm tus ntiv tes xoo rau luam ntawv, kho, qoob loo, thiab hloov pauv cov duab: Yog tias koj yuav ua ob npaug ntawm qhov loj ntawm tus thawj, muab ob npaug rau dpi.
Cov ntaub ntawv luam tawm
Yog tias koj xav tau lub tshuab luam ntawv feem ntau rau cov ntawv luam tawm, 300 dpi yog ntau tshaj qhov kev daws teeb meem txaus, thiab koj yuav tsis xav tau ntau qhov kev daws teeb meem hauv lub scanner.
Resize scans hauv cov duab-editing software kom txuag chaw ntawm koj lub hard drive.
Xim thiab qhov tob
Xim lossis qhov tob me ntsis yog cov ntaub ntawv uas lub tshuab luam ntawv sau txog cov ntaub ntawv lossis duab raug luam tawm. Ntawm qhov tob me ntsis siab dua, siv xim ntau dua, thiab qhov scan zoo dua.
Piv txwv li, cov duab grayscale yog 8-ntsis cov duab, nrog 256 qib grey. Cov duab xim luam tawm nrog 24-ntsis scanner yuav muaj ze li 17 lab xim, thaum 36-ntsis scanners muab ntau dua 68 billion xim.
Kev lag luam tawm yog cov ntaub ntawv loj. Tshwj tsis yog tias koj yog tus kws yees duab tshaj lij lossis tus tsim duab kos duab, tsis tas yuav txhawj xeeb txog qhov tob me ntsis, vim tias feem ntau cov scanners muaj tsawg kawg yog 24-ntsis xim qhov tob.
Kev daws teeb meem thiab qhov tob me ntsis cuam tshuam rau tus nqi scanner. Feem ntau, qhov siab dua qhov kev daws teeb meem thiab qhov tob me ntsis, tus nqi siab dua.
Resizing a Scan
Yog tias koj muaj kev lag luam duab-kho software xws li Adobe Photoshop, rov ua qhov ntsuas qis qis kom txuag tau qhov chaw yam tsis txo cov duab zoo. Piv txwv li, yog tias koj lub scanner scans ntawm 600 dpi thiab koj npaj yuav tshaj tawm cov luam theej duab rau hauv lub vev xaib uas 72 dpi yog tus qauv ntsuas kev daws teeb meem, tsis muaj laj thawj tsis hloov nws. Txawm li cas los xij, resizing lub scan upward yog ib lub tswv yim tsis zoo los ntawm qhov pom zoo.
