Image daws teeb meem yog pes tsawg tus dots los pixels ib nti square. Qhov chaw no yuav txiav txim siab seb cov duab yuav saib thaum twg luam tawm. Lawm, daim duab, uas muaj 72 pixels hauv ib nti, yuav zoo dua qub dua ib daim duab uas muaj 300 dpi.
Nws yog tsim nyog sau cia tias nyob rau ntawm qhov ntsuas qhov txawv ntawm cov kev txiav txim siab koj yuav tsis pom, nws yog tsuas yog luam tawm.
Yuav kom tsis txhob to taub yuam kev, peb txhais cov ntsiab lus "taw tes" thiab "pixel"vim hais tias es tsis txhob siv tus qauv txhais "ppi" (pixels ib nti) yog siv rau hauv Photoshop "dpi" (dots ib nti). "Pixel" - taw rau ntawm lub monitor, thiab "taw tes" - qhov no yog qhov uas muab lub tshuab luam ntawv tso rau ntawm ntawv. Peb yuav siv ob qho no, txij thaum qhov no nws tsis txawv.
Diam duab daws teeb meem
Los ntawm tus nqi ntawm qhov kev daws teeb meem ncaj qha nyob ntawm seb qhov loj ntawm daim duab, uas yog, cov uas peb tau tom qab luam ntawv. Piv txwv, peb muaj duab nrog qhov ntev ntawm 600 x 600 pixels thiab ib qho kev daws teeb meem ntawm 100 dpi. Cov loj tiag tiag yuav yog 6 x 6 nti.
Vim peb tab tom tham txog luam ntawv, koj yuav tsum tau nce qhov kev daws teeb meem mus rau 300 dpi. Tom qab cov kev ua no, qhov loj ntawm cov ntawv luam tawm yuav raug txo, vim peb tab tom sim "ntim" cov lus qhia ntxiv rau ib nti. Peb muaj qee cov pixels thiab lawv haum rau thaj tsam me me. Li no, tam sim no qhov loj ntawm daim duab yog 2 nti.
Hloov kev daws teeb meem
Peb tau ntsib nrog txoj hauj lwm ntawm kev nce cov duab ntawm ib daim duab kom tau npaj rau kev luam ntawv. Zoo nyob rau hauv cov ntaub ntawv no yog qhov tseem ceeb parameter.
- Them cov yees duab rau Photoshop thiab mus rau ntawm cov ntawv qhia zaub mov "Duab - Duab Loj".
- Nyob hauv qhov chaw loj qhov rai peb nyiam ua ob tog: "Dimension" thiab "Sau loj". Thawj lub block qhia peb pixels coob npaum li cas nyob rau hauv daim duab, thiab qhov thib ib - qhov kev daws teeb meem tam sim no thiab qhov sib luag ntawm qhov tseeb.
Raws li koj tau pom, qhov luaj li cas ntawm qhov print print yog 51.15 x 51.15 cm, uas yog heev ntau, nws yog ib qho zoo me me daim ntawv loj loj.
- Cia peb sim nce qhov kev daws teeb meem rau 300 pixels ib nti thiab pom qhov tshwm sim.
Qhov ntau ntxiv tau ntau tshaj peb zaug. Qhov no yog vim qhov tseeb tias qhov kev zov me nyuam cia li txuag qhov tseeb ntawm daim duab. Hauv no, peb nyiam Photoshop thiab ua kom muaj cov pixels hauv daim ntawv, thiab yuav siv lawv "ntawm lub taub hau." Qhov no ua rau tus neeg poob zoo, xws li kev nce qib hauv daim duab.
Txij li thaum lub yees duab tau ua ntaub ntawv thov yav dhau los Jpeg, artifacts peculiar rau cov hom ntawv nyob rau nws, feem ntau hnov ntawm cov plaub hau. Nws tsis nplua peb txhua.
- Ib qho kev txais tos yooj yim yuav pab peb kom tsis txhob muaj kev poob qis. Nws txaus siab nco qab txog qhov loj me me ntawm daim duab.
Nce qhov kev daws teeb meem, thiab tom qab ntawd sau qhov tseem ceeb rau qhov chaw loj.
Raws li koj tau pom, qhov loj ntawm cov ntawv sau tau hloov tseem tau hloov, tam sim no thaum luam ntawv peb tau txais ib daim duab ntawm ib tug me ntsis ntau tshaj 12 x 12 cm ntawm zoo zoo.
Qhov kev xaiv ntawm kev daws teeb meem
Lub hauv paus ntsiab lus ntawm qhov kev daws teeb meem yog raws li nram no: qhov ze ze tus neeg saib xyuas yog cov duab, yuav tsum muaj tus nqi ntau dua.
Rau cov ntawv luam tawm (cov ntawv teev lus lag luam, phau ntawv qhia, thiab lwm yam), nyob rau hauv txhua rooj plaub, kev tso cai tsawg kawg 300 dpi.
Rau cov zog thiab cov zog, uas tus saib pom yuav los ntawm qhov ze ntawm li 1 - 1.5 m lossis ntau tshaj, tsis meej tshaj plaws yog tsis xav tau, yog li koj tuaj yeem txo qhov muaj nqis rau 200 - 250 pixels ib nti.
Lub khw muag khoom ntawm lub khw muag khoom, uas yog tus neeg soj ntsuam tseem muaj ntxiv, tuaj yeem kho kom zoo nrog cov duab daws teeb meem 150 dpi.
Lossis loj tshaj tawm cov ntawv banners, uas yog nyob deb ntawm tus neeg saib xyuas, dua li pom lawv luv luv, yuav ua tau zoo 90 dots ib nti.
Rau cov duab uas tau tsim rau cov qauv ntawm cov khoom, los yog cov ntawv tshaj tawm hauv Internet, nws txaus 72 dpi.
Lwm qhov tseem ceeb thaum xaiv ib qho kev daws teeb meem yog qhov nyhav ntawm qhov ua ntaub ntawv. Feem ntau, cov kws tsim qauv tsis thwj to siab tshaj qhov ntsiab lus ntawm pixels ib nti, uas ua rau nce qhov nce siab ntawm qhov hnyav ntawm daim duab. Noj, piv txwv li, ib lub chij nrog qhov ntev ntawm 5 x 7 m thiab ib qho kev txiav txim ntawm 300 dpi. Nrog xws li tsis, daim ntawv yuav xa tawm li 60000 x 80000 pixels thiab "rub" kwv yees li 13 GB.
Txawm hais tias qhov cuabyeej cuabyav ntawm koj lub computer pub koj mus ua haujlwm nrog cov ntaub ntawv no, ces lub tsev luam ntawv yuav tsis pom zoo los ua haujlwm. Nyob rau hauv txhua rooj plaub, koj yuav tsum tau nug cov lus uas tsim nyog.
Qhov no yog txhua yam uas koj tuaj yeem qhia txog kev daws teeb meem ntawm cov duab, yuav hloov li cas, thiab yam teeb meem koj tuaj yeem ntsib. Them nyiaj tshwj xeeb seb yuav daws qhov teeb meem thiab qhov zoo ntawm cov duab ntawm qhov kev tshuaj ntsuam thiab thaum twg luam tawm, thiab ntau npaum li cas cov dots ib nti yuav txaus rau ntau zaus.
