Lub pixel loj ntawm lub vijtsam thiab tus naj npawb ntawm pixels ib square centimeter yog qhov sib txawv nyob ntawm saib ntawm lub ntsuas vuam. Muaj tus nqi tshwj xeeb - pixels ib nti (ppi). Los ntawm nws, koj tuaj yeem suav cov pixels ib mm thiab cm thiab hloov ua lwm yam, muaj pes tsawg pixels nyob ntawm qhov sib nrug.
Cov Lus Qhia
Kauj ruam 1
Pixel tsis yog metric lossis zoo li tus nqi. Qhov no yog tus nqi txheeb ze. Yog li, txhawm rau suav pes tsawg tus pixels hauv ib centimeter, koj yuav tsum paub cov lus zoo li ppi. Nws yuav tsum raug sau tseg tias tib neeg lub qhov muag tsis txawv ppi sib npaug nrog 306 lossis ntau dua. Cov no yog cov xaj me me uas qhov muag tsis pom ib tus taw tes thiab pom cov duab tag nrho. Niaj hnub no, lub ppi parameter no yog siv thaum luam tawm cov ntawv xov xwm zoo nkauj, thiab hauv Apple iPhone 4 tes.
Txhawm rau ntsuas tus naj npawb ntawm pixels nyob rau hauv ib centimeter ntawm txhua qhov screen, koj tuaj yeem siv lub rooj tshwj xeeb "Pixel Loj" nyob ntaw
Kauj ruam 2
Hauv lub rooj, koj yuav pom cov kab pheeb ces kaum ntawm cov zaub, nws txoj kev daws teeb meem, hom ntawv, pes tsawg tus pixels ib nti (ppi) thiab pixel loj hauv millimetres.
Piv txwv, raws cov lus, 21-nti npo nrog daws teeb meem ntawm 1680x1050 pixels muaj 94.3 pixels ib nti, thiab pixel loj ntawm xws li ib puag ncig yog 0.27 hli.
Qhov no txhais tau hais tias 1 cm (= 10 mm) ntawm xws li qhov loj (muaj ntev) muaj 37.037 pixels (10 mm / 0.27 mm = 37.037). Ib qho square centimeter ntawm ib qhov loj ntawm qhov kev daws teeb meem no thiab kab pheeb ces kaum yuav muaj kwv yees 1371.742 pixels (37.037 x 37.037 = 1371.742).
Kauj ruam 3
Koj tseem tuaj yeem siv lub laij lej tshwj xeeb yog tias lub rooj ntawv tsis qhia qhov tseeb uas koj xav tau. Nkag mus tshuaj ntsuam qhov kev tshuaj ntsuam thiab kab pheeb ces kaum hauv cov suav teb nyob rau sab saum toj ntawm nplooj ntawv, siv dot ua tus sib cais nruab nrab ntawm ib tus lej thiab nws feem, thiab tom qab ntawd nyem rau "Nuj Xam" Lub vijtsam yuav tso tawm qhov tsis xws li thaj chaw pom ntawm lub vijtsam, lub ntsej muag sib piv, thiab cov ntsuas uas koj xav tau - lub pixel loj hauv millimetres thiab kev daws teeb meem tshwj xeeb.
Tom ntej no, tseem faib 10 hli (1 cm) los ntawm lub pixel ntev kom hloov pauv centimeter rau pixels. Yog tias tsim nyog, khij qhov tshwm sim los ntawm cov naj npawb ntawm centimeters.
