Ma jirto jawaab sax ah su'aashan
Pixels halkii inches (PPI) ee muuqaalku waxa weeye waxa loo yaqaan ' cystic pixel' , waana macno ahaan inta pixels ah ee aad tirin lahayd haddii aad tirisay pixels, yadaal ama xagal, oo ku jira hal sawir oo ku yaal bandhiggaaga.
Waxaa jira dhowr sababood oo ah inaad ogaatid inta pixels ah ee ku jirta sawiradaada, laakiin badanaaba tani waa mid waxtar badan markaad isku dayeyso inaad ka fekerto sida sawirta shaashaddaada ay u eegto shaashad ka duwan.
Qiyaas kale oo caadi ah waa inaad ubaahan tahay inaad ogaatid bandhig ama daabacadaha PPI si aad u fahamto sida weyn ama yaraanta muuqaalka laga yaabo in la soo saaro marka la daabaco, laakiin dhab ahaantii maahan kiiskan. In badan oo ka hooseeya.
Ma jiro cid ka jawaabta Pixels perj
Haddii pixels oo dhan ay yihiin cabbirka isku mid ah, pixelska dhererka wuxuu noqonayaa lambar aqoonsi ah sida imisa mitir oo mitir ah (2.54) ama intee le'eg ayuu ku jiraa cagta (12).
Si kastaba ha ahaatee, pixels waa noocyada kala duwan ee bandhigyada kala duwan , sidaas jawaabta waa 58.74 pixels halkii inch ee 75 "4K teleefishinka, tusaale ahaan, iyo 440.58 pixels halkii inch oo 5" Full screen smartphone.
Si kale marka loo eego, tirada pixels halkii inches waxay ku xiran tahay xajmiga iyo qiyaasta shaashadda aad ka hadlaysid, sidaas darteed waa inaan sameynaa xisaab si aan u helno lambarka aad adigu leedahay.
Sidee loo xisaabiyaa Pixels ee nambarada
Ka hor intaanan helin waxa u eg sida xisaabta horumarsan (ma aha, ha ka welwelin), waxan kugu sameynay shaqada adag ee dhowr sawir oo ku jira Jadwalka Pixels Per Inch ee hoose ee bogga.
Haddii aad aragto shaashadda 'PPI', u gudub si aad u isticmaasho Nidaamka Pixels ee lambarka nambarkaaga , laakiin haddii kale, waxaan halkaan ku ogaan doonaa tallaabooyin dhowr ah oo xisaabeed.
Waxa aad u baahan doonto kiis kasta waa xajmiga sawirada xagjirnimada ee inches iyo sidoo kale xalka muraayadda . Labada lambarba waxaa laga heli karaa bogga farsamooyinka farsamooyinka ee muuqaalkaaga ama qalabkaaga.
Eeg sida loo helo macluumaad Taageerada Taageerada Taageerada Tijaabada haddii aad u baahato caawimaad qodid tan.
Waa kuwan isbarbardhigga xisaabta ee loogu talagalay dadka matalaya, laakiin ka bood erayga saxda ah talaabo tallaabo tallaabo ah:
ppi = (√ ( w ² + h ²)) / d... halkaasoo ppi uu yahay pixels halkii inch oo aad isku dayayso in aad hesho, w waa xalka ballaaran ee pixels, h waa qadarka sarre ee pixels, iyo d waa xajmiga xajmiga ee shaashadda ee inch.
Haddii aad seexatey inta lagu jiro nidaamka hawlgalka ee fasalka xisaabta, halkan waa sida aad tan u sameyso tusaale ahaan 60 "4K (3840x2160) shaashadda:
- Dhinaca miisaanka ballaaran: 3840² = 14,745,600
- Miisaankeedu yahay pixel-ka: 2160² = 4,665,600
- Ku dar lambarradaas: 14,745,600 + 4,665,600 = 19,411,200
- Qaado asalka lamid ah ee lambarkan: √ (19,411,200) = 4,405.814
- Kala soocista lambarkan adigoo cabbiraya shaashadda garaacida: 4,405,814 / 60 = 73.43
Shan ka mid ah talaabooyinka gaaban, waxaan ku qiyaasnay pixelska inji ah 60% "4K teleefishinka 4K ee 73.43 PPI.
Hadda waxaad taqaanaa muuqaalkaaga tusmada PPI ... laakiin waa maxay fiican tahay? Haddii aad kaliya kufaahin lahayd, waxaad samaysay! Si kastaba ha noqotee, sida aan ku qeexnay kor ku xusan, badanaa waqtiga qalabka ama muujinta PPI waa kan ugu horreeya laba tallaabo oo lagu gaaro waxyaabo waxtar badan.
Sidee loo Isticmaalaa Pixels Your Number Tirada
Hadda oo aad ogtahay shaashaddaada ama qalabkaaga PPI, waa waqtigii loo isticmaali lahaa isticmaalka wanaagsan.
Go'aami sida sawir wayn u eegayo Qalabka kale
Waxaad abuuri kartaa ama ku daabacan kartaa muuqaal ku yaal 17-ka "laptop" oo leh shaashad HD ah (129.584 PPI), laakiin ogow inaad ku muujin doonto 84 "4K UHD bandhig (52.45 PPI) xafiiska todobaadka soo socda.
Sidee baad u hubin kartaa in sawirka la abuuray uu ku filan yahay ama uu leeyahay faahfaahin sax ah?
Si aad uga jawaabto su'aashan, marka hore waxaad ubaahan doontaa inaad ogaatid PPI-ga qalabka ama bandhigida aad ka warqabto . Waxaan bartay sida loo sameeyo qaybta ugu dambeysa, ama waxaad ka heshay mid ama labadaba jadwalka hoose.
Waxa kale oo aad u baahan doontaa inaad ogaatid cabbirka sawirada toosan iyo kan qiyaasta sawirkaaga . Waxaad abaabusho ama edbineysaa sidaa darteed waa inay ahaataa mid sahlan oo lagu helo barnaamijka sawirada.
Sida horay, halkan waa isbarbar dhignaanta buuxda haddii aad aad ujecel tahay, laakiin tilmaamaha waxay ka hooseeyaan:
hsize = w / ppi vsize = h / ppi... halka hsize iyo isugeyntu ay yihiin sawirka cabbirka wareegga iyo garbaha ee dhumucda, siday u kala horreeyaan, muuqaalka kale , w waa ballaca sawirka pixels, h waa height of image ee pixels, iyo ppi waa PPI ah bandhigga kale .
Waa kuwan sidaad u samayn lahayd haddii sawirkaagu yahay 950x375 pixels oo cabbirka iyo bandhigga aad qorsheyneyso waa 84 "4K (3840x2160) shaashadda (52.45 PPI):
- Qaybi dhererka PPI: 950 / 52.45 = 18.11 "
- Qaybi dhererka PPI: 375 / 52.45 = 7.15 "
Halkan waxaan ku tusinay, inkasta oo aan loo eegin sida "wayn" ama "yaryar" ay u muuqato in ay muuqaal ahaan kuugu muuqanayso shaashadda adigoo adeegsanaya cabbirka sawirada 950x375, sawirkaasi wuxuu u muuqanayaa 18.11 "by 7.15" 84 "TV-ga 4K" ayaa lagu muujin doonaa.
Hadda waxaad isticmaali kartaa aqoontaada marka aad aragto taakulada ... Waxaa laga yaabaa in taasi tahay kaliya wixii aad ahayd ka dib, ama laga yaabo in aysan ku filneyn in la tixgeliyo 84 "shaashadu waa qiyaas ahaan 73" iyo 41 "dherer!
Go'aami Xajmiga Sawirka Sawirkiisu wuxuu daabacayaa Go'aanka buuxa
Nasiib wanaag, uma baahnid inaad sawirisid qalabkaaga ama aad muujisid PPI si aad u ogaatid sida sawirka weyn u daabacan yahay warqad.
Dhammaan waxaad u baahan tahay inaad ogaato waa macluumaadka ku jira sawirka laftiisa - cabbirka qiyaasta maskaxda , qiyaasta kor u-qaadista maskaxda , iyo sawirka PPI .
Dhamaan saddexda xog ee la hayo waxaa lagu heli karaa guryaha sawirada kuwaas oo aad ka heli kartid barnaamijka qaabeynta barnaamijka.
Waa kuwan isla'egyada:
hsize = w / ppi vsize = h / ppi... halka hsize iyo isfahmintu ay yihiin sawirka cabbirka wareega iyo garbaha ee dhumucda, siday u kala horreeyaan, sida lagu daabici doono, w waa ballaca sawirka pixels, h waa dhererka sawirka pixels, ppi waa PPI ee sawirka laftiisa.
Halkan waa sida aad tan u sameyso haddii sawirkaagu yahay 375x148 pixels oo cabbirka leh oo leh PPI oo ah 72:
- Qaybi dhererka PPI: 375/72 = 5.21 "
- Iskujir dhererka PPI: 148/72 = 2.06 "
Haddii aad u malaynayso inaadan kor u qaadin sawirka inta lagu jiro habka daabacaadda, sawirka waxaa lagu daabici doonaa xajmiga 5.21 "2.06". Samee xisaabta leh sawir aad haysato ka dibna daabac - ka shaqeeya mar kasta!
Xusuusin: DPI-ga ayaa xaddidaya kambiyuutarkaagu, waxay noqonaysaa 300, 600, 1200, iwm. Ma saameynayso cabbirka sawirku ku daabacan yahay! Nambarkani wuxuu aad ugu eg yahay PPI waxayna u taagan tahay "tayada" oo sawirkii loo diray daabacaadda la daabacay, laakiin aan lagu darin qeyb ka mid ah xisaabinta sawirkaaga sawirka.
Pixels Jumlad Giriig ah
Sida kor ku xusan, halkan waa PPI "warqada khiyaameeyaan" oo kaa celineysa xisaabta masraxa badan ee aan kor ku soo bandhigay.
| Baaxadda (gudaha) | 8K UHD (7680x4320) | 4K UHD (3840x2160) | Full HD (1920x1080) |
|---|---|---|---|
| 145 | 60.770 | 30.385 | 15.192 |
| 110 | 80.106 | 40.053 | 20.026 |
| 85 | 103.666 | 51.833 | 25.917 |
| 84 | 104.900 | 52.450 | 26.225 |
| 80 | 110.145 | 55.073 | 27.536 |
| 75 | 117.488 | 58.744 | 29.372 |
| 70 | 125.880 | 62.940 | 31.470 |
| 65 | 135.564 | 67.782 | 33.891 |
| 64.5 | 136.614 | 68.307 | 34.154 |
| 60 | 146.860 | 73.430 | 36.715 |
| 58 | 151.925 | 75.962 | 37.981 |
| 56.2 | 156.791 | 78.395 | 39.198 |
| 55 | 160.211 | 80.106 | 40.053 |
| 50 | 176.233 | 88.116 | 44.058 |
| 46 | 191.557 | 95.779 | 47.889 |
| 43 | 204.922 | 102.461 | 51.230 |
| 42 | 209.801 | 104.900 | 52.450 |
| 40 | 220.291 | 110.145 | 55.073 |
| 39 | 225.939 | 112.970 | 56.485 |
| 37 | 238.152 | 119.076 | 59.538 |
| 32 | 275.363 | 137.682 | 68.841 |
| 31.5 | 279.734 | 139.867 | 69.934 |
| 30 | 293.721 | 146.860 | 73.430 |
| 27.8 | 316.965 | 158.483 | 79.241 |
| 27 | 326.357 | 163.178 | 81.589 |
| 24 | 367.151 | 183.576 | 91.788 |
| 23 | 383.114 | 191.557 | 95.779 |
| 21.5 | 409.843 | 204.922 | 102.461 |
| 17.3 | 509.343 | 254.671 | 127.336 |
| 15.4 | 572.184 | 286.092 | 143.046 |
| 13.3 | 662.528 | 331.264 | 165.632 |
| 11.6 | 759.623 | 379.812 | 189.906 |
| 10.6 | 831.286 | 415.643 | 207.821 |
| 9.6 | 917.878 | 458.939 | 229.469 |
| 5 | 1762.326 | 881.163 | 440.581 |
| 4.8 | 1835.756 | 917.878 | 458.939 |
| 4.7 | 1874.815 | 937.407 | 468.704 |
| 4.5 | 1958.140 | 979.070 | 489.535 |
Dabcan, ma aha qalab kasta ama muujiya waxaa jira 8K UHD , 4K UHD , ama Full HD (1080p) . Halkan waxaa ku yaal miis kale oo leh dhowr qalab oo caan ah oo leh qiyaasaha aan caadiga ahayn iyo xisaabinta PPI:
| Qalabka | Baaxadda (gudaha) | Xaqiijinta (x / y) | PPI |
|---|---|---|---|
| Chromebook 11 | 11.6 | 1366x768 | 135.094 |
| Chromebook Pixel | 12.9 | 2560x1700 | 238.220 |
| Chromebox 30 | 30 | 2560x1600 | 100.629 |
| Dell Venue 8 | 8.4 | 1600x2560 | 359.390 |
| Dell Venue 11 Pro | 10.8 | 1920x1080 | 203.972 |
| Telefoonka Aasaasiga ah | 5.71 | 2560x1312 | 503.786 |
| Google Pixel | 5 | 1080x1920 | 440.581 |
| Google Pixel XL | 5.5 | 1440x2560 | 534.038 |
| Google Pixel 2 | 5 | 1920x1080 | 440.581 |
| Google Pixel 2 XL | 6 | 2880x1440 | 536.656 |
| Google Pixelbook | 12.3 | 2400x1600 | 234.507 |
| HTC One M8 / M9 | 5 | 1080x1920 | 440.581 |
| iMac 27 | 27 | 2560x1440 | 108.786 |
| iMac 5K | 27 | 5120x2880 | 217.571 |
| iPad | 9.7 | 768x1024 | 131.959 |
| iPad Mini | 7.9 | 768x1024 | 162.025 |
| iPad Mini Retina | 7.9 | 1536x2048 | 324.051 |
| iPad Pro | 12.9 | 2732x2048 | 264.682 |
| Retina iPad | 9.7 | 1536x2048 | 263.918 |
| iPhone | 3.5 | 320x480 | 164.825 |
| iPhone 4 | 3.5 | 640x960 | 329.650 |
| iPhone 5 | 4 | 640x1136 | 325.969 |
| iPhone 6 | 4.7 | 750x1334 | 325.612 |
| iPhone 6 Plus | 5.5 | 1080x1920 | 400.529 |
| iPhone 7/8 | 4.7 | 1334x750 | 325.612 |
| iPhone 7/8 Plus | 5.5 | 1920x1080 | 400.528 |
| iPhone X | 5.8 | 2436x1125 | 462.625 |
| LG G2 | 5.2 | 1080x1920 | 423.636 |
| LG G3 | 5.5 | 1440x2560 | 534.038 |
| MacBook 12 | 12 | 2304x1440 | 226.416 |
| MacBook Air 11 | 11.6 | 1366x768 | 135.094 |
| MacBook Air 13 | 13.3 | 1440x900 | 127.678 |
| MacBook Pro 13 | 13.3 | 2560x1600 | 226.983 |
| MacBook Pro 15 | 15.4 | 2880x1800 | 220.535 |
| Nexus 10 | 10.1 | 2560x1600 | 298.898 |
| Nexus 6 | 6 | 1440x2560 | 489.535 |
| Nexus 6P | 5.7 | 1440x2560 | 515.300 |
| Nexus 9 | 8.9 | 2048x1536 | 287.640 |
| OnePlus 5T | 6.01 | 1080x2160 | 401.822 |
| Samsung Galaxy Note 4 | 5.7 | 1440x2560 | 515.300 |
| Samsung Galaxy Note 8 | 6.3 | 2960x1440 | 522.489 |
| Samsung Galaxy S5 | 5.1 | 1080x1920 | 431.943 |
| Samsung Galaxy S6 | 5.1 | 1440x2560 | 575.923 |
| Samsung Galaxy S7 | 5.1 | 2560x1440 | 575.923 |
| Samsung Galaxy S8 | 5.8 | 2960x1440 | 567.532 |
| Samsung Galaxy S8 + | 6.2 | 2960x1440 | 530.917 |
| Sony Xperia Z3 Tablet | 8 | 1920x1200 | 283.019 |
| Sony Xperia Z4 Tablet | 10.1 | 2560x1600 | 298.898 |
| Dhulka | 10.6 | 1366x768 | 147.839 |
| Dhulka 2aad | 10.6 | 1920x1080 | 207.821 |
| Dhulka 3 | 10.8 | 1920x1080 | 203.973 |
| Buugga Dhulka | 13.5 | 3000x2000 | 267.078 |
| Surface Pro | 10.6 | 1920x1080 | 207.821 |
| Surface Pro 3 | 12 | 2160x1440 | 216.333 |
| Surface Pro 4 | 12.4 | 2736x1824 | 265.182 |
Ha welwelin haddii aadan helin xalka ama qalabkaaga. Xusuusnow, waxaad xisaabin kartaa inta pixels ay ku jirto qiyaasta halbeeg ee qalabkaaga, iyada oo aan loo eegin cabbirka ama xalka, iyadoo la adeegsanayo xisaabta aan kor ku qeexnay.