Yuav Muab Dabtsi Los Tshawb Fawb Txog Kev Tshawb Fawb Duab
Ntawm no yog cov lus nug thiab cov lus teb los ntawm tus neeg nyeem ntawv qhov teeb meem ntawm lub ntiaj teb tiag tiag txog kev daws teeb meem duab. Qhov no zoo nkauj zoo li cov neeg feem coob tau ua nrog rau thaum lawv tau thov kom tau ib daim duab los siv rau hauv ntawv ...
"Ib tug neeg xav tau ib daim duab los ntawm kuv, lawv xav tau nws los ua 300 DPI, 5 x 8 nti. Photo I muaj 702K, 1538 x 2048 jpeg Kuv pom tias nws muaj txaus txaus! Tsuas yog cov duab thaij duab uas kuv muaj yog Paint.NET, thiab kuv tsis paub tseeb nws tseem qhia kuv tias kuv xav paub dab tsi yog tias kuv tsis paub nrog nws, nws qhia kuv tias kuv qhov kev daws teeb meem yog 180 pixels / nti, ntawm qhov loj me kwv yees li 8 x 11. Yog tias kuv ua nws 300 pixels / nti (puas yog tib yam li DPI?) Kuv tuaj yeem tau txais ib daim loj loj uas ua haujlwm, txog 5 x 8, thiab nws hloov pixel dav rau 1686 x 2248. Qhov ntawd yog dab tsi Kuv yuav tsum tau ua dabtsi ??? Nws tsis zoo li ntau ntawm qhov kev hloov rau tib neeg qhov muag. "
Qhov ntau ntawm qhov tsis meej pem no yog vim neeg feem coob tsis siv lub ntsiab lus tseeb. Lawv hais tias DPI thaum lawv yuav tsum hais PPI (pixels ib nti). Koj yees duab yog 1538 x 2048 thiab koj xav tau ib qhov loj ntawm 5 x 8 nti ... cov lej uas koj xav tau yog:
pixels / nti = PPI
1538/5 = 307
2048/8 = 256
Uas txhais tau hais tias 256 yog qhov siab tshaj PPI uas koj tuaj yeem tau txais los ntawm daim duab no los luam qhov ntev tshaj ntawm 8 nti tsis pub koj software ntxiv tshiab pixels. Thaum koj software muaj ntxiv los yog tshem tawm pixels, nws yog hu ua resampling , thiab nws ua rau ib tug poob zoo. Qhov ntau drastic qhov kev hloov, qhov ntau pom tseeb poob nyob rau hauv zoo yuav. Hauv koj tus piv txwv, nws tsis yog ntau heev, vim li ntawd tus poob yuav tsis pom zoo ... raws li koj tau sau tseg. Nyob rau hauv ib rooj plaub ntawm qhov kev hloov me me, Kuv xav kom luam cov duab PPI tsawg dua. Nws feem ntau luam tawm nplua . Tab sis txij li thaum koj xa tawm no mus rau ib tug neeg, koj tsuas yog yuav tsum tau txais qhov resampling kom nws 300 PPI.
• Tshaj ntawd ntxiv rau Kev Xam Phaj
Dab tsi koj tau ua nyob rau hauv Paint.NET zoo li koj paub thiab to taub tias cov software yuav mus rau resample cov duab. Txhua lub sij hawm pixel qhov ntev hloov, qhov no yog resampling. Muaj ntau ntau yam algorithms rau resampling, thiab txawv software siv ntau txoj kev. Qee software txawm muaj koj xaiv cov algorithms sib txawv. Qee txoj kev ua haujlwm zoo dua kom txo cov duab me me (downsampling) thiab ua haujlwm zoo dua rau qhov ua kom cov duab loj (ua kom zoo dua) xws li koj xav ua. "Zoo Tshaj Plaws" hauv Paint.NET yuav tsum zoo rau qhov koj yuav tsum tau ua.
• Ntxiv rau Txoj Kev Siv
Kev xyaum ua kom kuv rov xyaum ua zog dua tuaj yeem pab ua kom tag nrho qhov dlaim phaj rau koj. Nws tau sau ua ib feem ntawm kuv cov duab Photoshop CS2, tiam sis lub thawv ntawv sib tham hauv lwm cov software kuj zoo ib yam li koj tseem tuaj yeem ua raws.
• Kev Txiav Txim Siab
Kuj pom: Kuv yuav hloov qhov luaj li cas ntawm daim duab digital?
Lwm qhov teeb meem koj muaj yog tias koj qhov ntev yog ib qho txawv piv ntawm qhov loj loj uas tau thov. Qhov ntawd txhais tau tias koj yuav tau cog cov duab koj tus kheej yog tias koj xav tswj cov lus qhia nyob rau hauv qhov kawg sau.
• Nam piv thiab Cropping mus rau Proper Print Dimensions
Ntawm no yog qee qhov kev rov qab soj ntsuam ntxiv:
"Thaum kuv sim ua daim duab PPI ntau dua, kuv xav pom cov pixels cov zauv los txo qhov tsis ntxiv.Kuv twv kuv xav tias yog tias tsis muaj pixels txaus kom tau qhov me me Kuv xav tau ntawm qhov kev daws teeb meem, Yog tias kuv tau nyeem koj cov lus txhais, kuv to taub tias vim li cas thiaj muaj ntau pixels, tsis pub tsawg dua. "
Qhov koj tau hais txog kev kis tawm cov pixels no yog qhov tshwm sim thaum koj xa cov ntaub ntawv daws teeb meem mus rau lub tshuab luam ntawv. Nyob rau hauv qis qis qis, pixels tau ntau kis tawm thiab koj plam kev nthuav dav; thaum daws teeb meem pixels ntau dua ze zog ua ke, tsim kev qhia ntxiv. Upsampling ua rau koj software tsim pixels tshiab, tab sis nws tsuas ua tau twv ua qhov tseeb - nws tuaj yeem tsis tsim dua yam tsis muaj dab tsi yog muaj Ameslikas.