Kev hais txog kev luam ntawv thiab kev ua cov duab, ib qho yuav tsum muaj nrog ntau cov ntsiab lus, lub ntsiab lus uas tsis to taub raug txhua tus neeg. Cov ntsiab lus xws li, suav nrog, cov lus "pixel" thiab "daws teeb meem".
Cov Lus Qhia
Kauj ruam 1
Yog tias koj nug cov lus nug “pes tsawg lub pixels nyob hauv A4 daim ntawv”, nws hloov tawm tias tsis muaj lus teb rau nws. Qhov tseeb yog tias, tsis zoo li cov centimeters thiab millimeters, ib lub pixel tsis muaj qhov ntev. Qhov tseem ceeb, ib lub pixel yog qhov tsawg tshaj plaws ob-qhov tseeb rau cov khoom siv hauv computer cov duab. Kev sib xyaw ua ke ntawm cov pixels ntawm qee cov xim tsim ib cov duab tshwj xeeb hauv ib qho screen lossis ntawv ntawv. Muaj nyob ntawm cov khoom siv sib txawv, ib lub pixel tuaj yeem ua duab square, duab plaub, octagonal, lossis puag ncig. Lo lus "pixel" lossis "pixel" nws tus kheej yog cov tsiaj ntawv luv ntawm lus Askiv pix element, uas txhais tau tias "duab keeb".
Kauj ruam 2
Qhov loj me me Pixel tsis yog qhov muaj nuj nqis tas li, vim hais tias nws ncaj qha ntsig txog lub tswv yim xws li "kev daws teeb meem". Kev daws teeb meem hauv qhov no txhais tau tias muaj pes tsawg tus pixels lossis cov dots uas haum rau ib lossis lwm chav tsev ntawm thaj chaw lossis ntev. Feem ntau, kev daws teeb meem yog ntsuas hauv dpi, uas txhais tau tias tsuas siv ib nti - tus lej ntawm dots ib nti. Lawm, qhov kev daws teeb meem siab dua, cov duab zoo dua rau ntawm lub vijtsam lossis ntawv, thiab rov hais dua.
Kauj ruam 3
Yog li, tus naj npawb ntawm pixels nyob rau hauv ib daim ntawv A4 ncaj qha nyob ntawm kev daws teeb meem siv hauv kev tsim cov duab thiab luam ntawv. Feem ntau cov phiaj xwm graphic tsim cov duab ntawm 72 dpi los ntawm lub neej ntawd, tab sis 300 dpi feem ntau siv rau cov ntawv luam tawm zoo. Paub txog qhov ntev ntawm A4 nplooj ntawv (297x210 mm) lossis 11, 75x8, 25 ntiv tes, koj tuaj yeem suav cov pixels ntawm qhov kev daws teeb meem. Yog li, rau kev daws teeb meem ntawm 72 dpi, tus lej ntawm cov dots ntawm ib daim ntawv A4 yuav yog 502524, thiab rau kev daws teeb meem ntawm 300 dpi - ntau dua 8, 7 lab pixels.
Kauj ruam 4
Hauv kev coj ua, nws zoo li qhov no: piv txwv li, koj muaj daim duab nrog qhov loj ntawm 1000x1000 pixels, thaum luam tawm ntawm 72 dpi, nws yuav nqa daim ntawv 35 x 35 centimeters, thiab yog tias koj xa nws luam tawm ntawm 300 dpi, tom qab ntawd qhov loj kawg yuav tsuas yog 8.5 los ntawm 8.5 centimeters. Yog lawm, cov duab me me tuaj yeem ncab dhau ib daim ntawv tag nrho, tab sis nws yuav dhau los ua tile thiab grainy. Thiab yog tias koj luam daim duab nrog qhov kev daws teeb meem tsawg, qhov hloov pauv xim yuav raug kev txom nyem heev. Yog li ntawd, hauv kev lag luam luam ntawv, raws li txoj cai, cov duab loj txaus yuav tsum tau, tso cai rau lawv luam tawm ntawm kev daws teeb meem siab, uas ua kom muaj cov duab zoo lossis duab ua piv txwv.
