Cov duab daws teeb meem yog tus naj npawb ntawm cov ntsiab lus lossis pixels tauj ib nti cheeb tsam. Cov ntsuas no txiav txim seb cov duab yuav zoo li cas thaum luam ntawv. Lawm, daim duab, nyob rau hauv ib nti ntawm uas muaj 72 pixels, yuav mob heev dua li lub snapshot nrog kev daws teeb meem ntawm 300 dpi.
Nws yog tsim nyog sau tseg tias ntawm kev soj ntsuam qhov sib txawv ntawm kev tso cai koj yuav tsis pom, peb tsuas yog tham txog kev luam ntawv.
Txhawm rau zam kev tsis to taub, peb yuav txhais cov lus "teev" thiab "PPI" (pixels ib nti), "DPI" (DPI) yog siv hauv Photoshop. "Pixel" - ib qho taw tes rau ntawm tus saib, thiab "taw tes" yog dab tsi lub tshuab luam ntawv muab tso rau ntawm daim ntawv. Peb yuav siv ob qho tib si, txij li qhov no nws tsis muaj teeb meem.
Tso Cai Ntawm Kev Yees Duab
Qhov ntau thiab tsawg ntawm daim duab ntawm daim duab ncaj qha yog nyob ntawm tus nqi daws teeb meem, uas yog, cov uas peb tau txais tom qab luam ntawv. Piv txwv li, peb muaj ib tus duab nrog qhov ntev ntawm 600x600 pixels thiab kev daws teeb meem ntawm 100 dpi. Qhov loj me yuav yog 6 x6 ntiv.
Txij li thaum peb tab tom tham txog kev luam ntawv, koj yuav tsum nce kev daws teeb meem txog li 300dpi. Tom qab cov kev ua no, qhov loj ntawm cov luam tawm luam tawm yuav txo qis, txij li hauv ib nti peb tab tom sim ua "tso" cov lus qhia ntxiv. Pixels peb muaj tsawg tsawg tus naj npawb thiab lawv haum rau thaj chaw me dua. Raws li, tam sim no qhov loj me ntawm daim duab yog 2 nti.
Hloov Kev Tso Cai
Peb tau ntsib nrog txoj haujlwm los ua kom cov kev daws teeb meem ntawm daim duab los npaj nws rau luam. Zoo nyob rau hauv cov ntaub ntawv no yog qhov tseem ceeb parameter.
- Peb thauj cov yees duab hauv Photoshop thiab mus rau "Duab - Duab Loj" cov ntawv qhia zaub mov.
- Nyob rau hauv qhov loj ntawm lub qhov rai loj, peb txaus siab rau ob qho kev sib tw: "Dimension" thiab "luam ntawv luam ntawv loj". Thawj zaug thaiv qhia peb ntau npaum li cas pixels muaj nyob hauv daim duab, thiab qhov thib ob yog qhov kev daws teeb meem tam sim no thiab muaj tseeb tiag.
Raws li koj tuaj yeem pom, qhov loj ntawm cov luam tawm ottis yog sib npaug rau 51.15x51.15 cm, uas yog qhov ntau thiab tsawg tsawg ntawm daim ntawv loj loj.
- Cia peb sim ua kom daws teeb meem nce txog 300 pixels ib nti thiab saib ntawm qhov tshwm sim.
Qhov ntsuas qhov ntev tshaj plaws nce ntau dua peb zaug. Qhov no yog vim qhov tseeb tias qhov kev pab cuam yeej txuag cov duab ntev tiag tiag. Ntawm lub hauv paus no, peb nyiam Photoshop nce tus naj npawb ntawm pixels hauv cov ntawv, thiab siv nws ntawm lub taub hau. Qhov no entails poob ntawm qhov zoo, raws li nrog cov nyiaj li ib txwm nyob hauv daim duab.
Txij li thaum jpeg compression tau thov rau daim duab, cov duab kos duab tus yam ntxwv ntawm cov qauv tshwm sim rau nws, feem ntau pom ntawm nws cov plaub hau. Nws tsis haum peb txhua.
- Zam kev poob qis yuav pab peb kom tau txais kev txais tos. Nws yog qhov txaus kom nco ntsoov thawj qhov ntev ntawm daim duab.
Ua kom cov kev daws teeb meem, thiab tom qab ntawd muab cov nqi qub nyob hauv qhov dimion teb.
Raws li koj tuaj yeem pom, qhov loj ntawm cov luam ntawv tau hloov pauv, tam sim no thaum luam ntawv, peb yuav tau txais ib daim duab ntawm me ntsis ntau dua 12X12 cm ntawm zoo zoo.
Xaiv Kev Tso Cai
Lub hauv paus ntsiab lus ntawm kev xaiv qhov kev daws teeb meem yog raws li hauv qab no: Tus neeg saib xyuas ze rau cov duab, cov nqi siab dua yog qhov yuav tsum tau ua.
Rau cov khoom luam tawm (cov ntawv teev ua lag luam, cov phau ntawv, thiab lwm yam), muaj kev daws teeb meem tsawg kawg 300 DPI yuav raug daws.
Txog cov ntawv tshaj tawm thiab cov ntawv tshaj tawm, uas tus saib yuav pom los ntawm kev deb ntawm txog 1 - 1.5 M lossis ntau dua, yog li koj tuaj yeem txo tus nqi nce mus txog 200 - 250 pixels ib nti.
Cov khoom siv ntawm cov khw muag khoom, los ntawm tus neeg soj ntsuam tseem ceeb ntxiv, tuaj yeem dai kom zoo nkauj nrog cov duab nrog rau 150 dpi.
Kev tshaj tawm loj tshaj plaws ntawm kev deb ntawm tus saib, dhau ntawm lub ntsej muag ntawm lawv, yuav ua kom tau txog 90 chav nyob rau ib nti.
Rau cov duab npaj rau kev sau npe cov ntawv, lossis tsuas yog tshaj tawm hauv Is Taws Nem, 72 DPI txaus.
Lwm lub sijhawm tseem ceeb thaum kev tso cai raug xaiv - qhov no yog qhov hnyav ntawm cov ntawv. Feem ntau, cov neeg tsim qauv tsis tsim nyog overeavably overeestimate cov ntsiab lus ntawm pixels ib tus nti, uas ua rau ib qho kev nce qib hauv qhov hnyav ntawm daim duab. Noj, piv txwv li, ib daim chij nrog qhov loj me ntawm 5x7 m thiab ib qho kev daws teeb meem ntawm 300 dpi. Nrog xws li cov kev ntsuas no, cov ntaub ntawv yuav muaj kwv yees li 60000x80000 pixels thiab "rub" txog 13 GB.
Txawm hais tias koj lub khoos phis tawm kho vajtse yuav tso cai rau koj ua haujlwm nrog cov ntawv loj no, lub tsev luam ntawv tsis zoo li pom zoo coj nws mus ua haujlwm. Nyob rau hauv txhua rooj plaub, nws yuav tsim nyog los nug cov cai muaj cai.
Qhov no yog txhua yam uas tuaj yeem qhia txog kev daws teeb meem ntawm cov duab, yuav ua li cas hloov nws, thiab nrog cov teeb meem twg tuaj yeem ntsib. Them nyiaj tshwj xeeb rau li cas cov kev daws teeb meem thiab cov duab zoo ntawm kev tshuaj ntsuam saib xyuas thiab thaum muaj pes tsawg tus lej ntawm ib nti yuav txaus rau cov xwm txheej sib txawv.