Palibe yankho lolondola ku funso ili
Ma pixels per inch (PPI) a mawonetsedwe ndi omwe amatchulidwa kuti kuchuluka kwake kwa pixel ndipo ndithudi ndi pixel angati omwe mungawawerengere ngati muwerenga pixels, yopingasa kapena yowoneka, yomwe ilipo mu inchi imodzi yomwe mumawonetsera.
Pali zifukwa zingapo zomwe mukudziwira kuti ndi ma pixel angati omwe mukuwonetserako, koma nthawi zambiri izi zimathandiza pamene mukuyesera kulingalira momwe fano pachiwonekera chanu likhoza kuyang'ana pawonekedwe lina.
Chinthu chinanso chodziwika ndi chakuti muyenera kudziwa makina a PPI kapena osindikiza kuti muzindikire kuti chithunzi chachikulu kapena chaching'ono chikhoza kuwoneka bwanji, koma simukutero . Zambiri pazomwezi.
Palibe Yankho kwa Pixel pa inch
Ngati mapikseli onse anali ofanana, ma pixels mu inchi angakhale nambala yodziwika ngati masentimita angapo mu inchi (2.54) kapena masentimita angapo mu phazi (12).
Komabe, ma pixel ndi ofanana mosiyana pa mawonetsedwe osiyanasiyana , kotero yankho liri ma pixel 58.74 pa inchi pa TV ya "4K", mwachitsanzo, ndi ma pixel 440.58 pa inchi pazenera 5 "Full HD smartphone.
Mwa kuyankhula kwina, ndi pixel angati pa inchi kumadalira kukula ndi chisankho cha chinsalu chomwe mukuchikamba, kotero tifunikira kuchita masamu kuti tipeze nambala yomwe mwakhala nayo.
Momwe Mungaperekere Ma Pixels Mu Inchi
Tisanalowe mu maonekedwe apamwamba (sikuti, osadandaula), takugwiritsani ntchito mwakhama kwa mawerengedwe angapo mu Pebulo Loyang'ana Penti Lamkati Pansi pa tsamba.
Ngati mupeza ma PPI anu, pitirizani kugwiritsa ntchito momwe mungagwiritsire ntchito ma Pixels anu pa chiwerengero cha inchi , koma ngati sichoncho, tidzakumbukira pomwe pano ndi zochepa zosawerengera masamu.
Chimene mufunikira mulimonsemo ndi kukula kwa mawonetsedwe ndi masentimita komanso ndondomeko ya chinsalu . Nambala zonsezi zingapezeke pa tsamba lachinsinsi lawonekera kapena chipangizo chanu.
Onani Mmene Mungapezere Zipangizo Zothandizira Zopanga Zamakono ngati mukufuna thandizo kukumba izi.
Pano pali chiyero chokwanira kwa anthu osungirako masewera, koma tulukani kumene kudutsapo kwa mayendedwe amodzi ndi sitepe:
ppi = (√ (w² + h²)) / d... pomwe ppi ndi pixels per inch inu mukuyesera kuti mupeze, w ndicho chigamulo chokwanira pa pixels, h ndi chisamaliro chapamwamba mu pixels, ndipo d ndi kukula kwake kwa chinsalu mu masentimita.
Ngati mutagona pa nthawi ya masewero a masamu pamasom'pamaso, ndi momwe mukuchitira izi ndi chitsanzo cha masewero 60 "4K (3840x2160):
- Mzere wozungulira ma pixelesi aakulu : 3840² = 14,745,600
- Mzere wojambulapo ma pixels akumwamba : 2160² = 4,665,600
- Onjezerani nambalayi pamodzi: 14,745,600 + 4,665,600 = 19,411,200
- Tengerani mizu yambiri ya nambalayi: √ (19,411,200) = 4,405,814
- Gawani chiwerengerochi pogwiritsa ntchito seweroli: 4,405,814 / 60 = 73,43
Pafupipafupi asanu, tinkawona mapikisilosi mu inchi pa televizioni 60 "4K kukhala 73.43 PPI. Zomwe mukufunikira kuchita tsopano zikubwereza masitepe asanuwo ndi mawonedwe anu , pogwiritsa ntchito ndondomeko yanu .
Kotero tsopano mukudziwa mawonedwe anu a PPI ... koma ndi ubwino wanji? Ngati mutangofuna kudziwa, mwatha! Komabe, monga momwe tafotokozera kumayambiriro pamwambapa, nthawi zambiri chipangizo kapena kuwonetsera PPI ndicho choyamba pa masitepe awiri kuti tipeze kuntchito yothandiza kwambiri.
Mmene Mungagwiritsire Ntchito Ma Pixels Anu Nambala Yosinthana
Tsopano kuti mudziwe skrini yanu kapena chipangizo PPI, ndi nthawi yoti muziigwiritsa ntchito bwino.
Zindikirani momwe Chithunzi Chachikulu Chidzayang'anire pa Chipangizo China
Mukhoza kulenga kapena kusintha chithunzi pa 17 "laputopu ndi screen HD (129.584 PPI) koma mukudziwa kuti muwonetsera pa 84" 4K UHD mawonetsero (52.45 PPI) mu ofesi sabata yamawa.
Kodi mungatsimikize bwanji kuti chithunzichi chikulengedwa mokwanira kapena chiri ndi tsatanetsatane?
Kuti muyankhe funso ili, muyenera kuyamba kudziwa PPI ya chipangizo kapena mawonetsero omwe mukufuna kudziwa . Tinaphunzira kuchita izi mu gawo lotsiriza, kapena inu mwapeza chiwerengero chimodzi kapena ziwiri mu tebulo ili m'munsiyi.
Muyeneranso kudziwa miyeso yopanda malire ndi yowoneka bwino ya chithunzi chanu . Mukulenga kapena kusintha kuti zikhale zosavuta kupeza pulogalamu yanu yamagetsi.
Monga kale, apa palizomwe zikugwirizana ngati mukufuna, koma malangizo ali pansipa:
hsize = w / ppi vsize = h / ppi... pomwe malo ndi mazithunzi ndizithunzi zazithunzi ndi zowoneka bwino mu masentimita, motero, pazithunzi zina , w ndi chiwerengero cha chithunzi mu pixels, h ndi kutalika kwa chithunzi mu pixels, ndipo ppi ndi PPI ya chiwonetsero china .
Pano pali momwe mumachitira izi ngati fano lanu ndi ma pixel 950x375 kukula ndipo mawonekedwe omwe mukukonzekera ndiwowonjezera 84 "4K (38.40x2160) screen (52.45 PPI):
- Gawani m'lifupi ndi PPI: 950 / 52.45 = 18.11 "
- Gawani kutalika kwa PPI: 375 / 52.45 = 7.15 "
Apa tawonetsa kuti, ziribe kanthu kuti "chachikulu" kapena "chaching'ono" chithunzicho chikhoza kuwoneka kukhala pazenera lanu , ndi miyeso ya pixel ya 950x375, chithunzi chimenecho chidzakhala ngati 18.11 "ndi 7.15" pa 84 "4K TV it ' Idzawonetsedwa pa.
Tsopano mungagwiritse ntchito chidziwitso chimenechi monga momwe mukuonera ... mwinamwake ndizo zomwe munali nazo kale, kapena mwinamwake sizokwanira pakuganizira kuti 84 "zowonekera pafupifupi 73" kudutsa ndi 41 "wamtali!
Sungani Kukula Chithunzi cha Will Will at Resolution Full
Mwamwayi, simusowa kuwona chipangizo chanu kapena kuwonetsera PPI kuti muwone momwe chithunzi chomwe mumasindikizira chidzakhala pamapepala.
Zonse zomwe mukufunikira kudziwa ndizomwe zili mu chithunzi chomwecho - mbali ya pixel yopingasa , gawo la pixel , ndi PPI .
Deta zonse zitatuzi zilipo muzojambula zomwe mungapeze pulogalamu yanu yojambula zithunzi.
Nazi izi:
hsize = w / ppi vsize = h / ppi... komwe kuliza ndi kuthamanga ndizithunzi zazithunzi ndi zowoneka bwino mumasentimita, motero, pamene zidzasindikizidwa, w ndi chigawo cha chithunzi mu pixels, h ndi kutalika kwa chithunzi mu pixels, ndipo ppi ndi PPI ya chithunzicho palokha.
Pano pali momwe mukuchitira izi ngati fano lanu ndi ma pixel 375x148 kukula ndipo lili ndi PPI ya 72:
- Gawani m'lifupi ndi PPI: 375/72 = 5.21 "
- Gawani kutalika ndi PPI: 148/72 = 2.06 "
Poganiza kuti simusintha chithunzichi panthawi yosindikizira, chithunzichi chidzasindikizidwa kukula kwa 5.21 "ndi 2.06". Kodi masamu ali ndi chithunzi chomwe muli nacho ndikuchijambula - chimagwira ntchito nthawi zonse!
Zindikirani: Kutsimikiza kwa DPI yanu yosindikizira yakhazikitsidwa, mwina 300, 600, 1200, ndi zina zotero, sizikukhudza kukula kwake kuti fanolo lasindikizidwa! Nambalayi ikufanana kwambiri ndi PPI ndipo imayimira "khalidwe" limene chithunzi chotumizidwa kwa wosindikiza chimasindikizidwa ndizo koma sichiyenera kuphatikizidwa ngati gawo la mawerengedwe a kukula kwa fano.
Ma Pixels Pakati Pake
Monga momwe tatchulidwira pamwambapa, apa pali PPI "cheza pepala" lomwe liyenera kukupulumutsani masamu ambiri omwe tasonyeza pamwambapa.
| Kukula (mkati) | 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 |
Zoonadi, sizinthu zonse kapena ziwonetsero kunja kwa 8K UHD , 4K UHD , kapena Full HD (1080p) . Pano pali tebulo lina lomwe lili ndi maluso ambiri omwe ali osagwirizana ndi ma PPI awo:
| Chipangizo | Kukula (mkati) | Kusintha (x / y) | PPI |
|---|---|---|---|
| Chromebook 11 | 11.6 | 1366x768 | 135.094 |
| Chromebook Pixel | 12.9 | 2560x1700 | 238.220 |
| Chromebox 30 | 30 | 2560x1600 | 100.629 |
| Dell Malo 8 | 8.4 | 1600x2560 | 359.390 |
| Dell Malo 11 Pro | 10.8 | 1920x1080 | 203.972 |
| Chofunika Kwambiri | 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 |
| Pulogalamu ya iPad | 12.9 | 2732x2048 | 264.682 |
| iPad Retina | 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 |
| Pulogalamu ya Sony Xperia Z4 | 10.1 | 2560x1600 | 298.898 |
| Pamwamba | 10.6 | 1366x768 | 147.839 |
| Pamwamba 2 | 10.6 | 1920x1080 | 207.821 |
| Pamwamba 3 | 10.8 | 1920x1080 | 203.973 |
| Bukhu Lopamwamba | 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 |
Musadandaule ngati simunapeze chisankho kapena chipangizo chanu. Kumbukirani, mungathe kuwerengera ma pixel angapo mu inchi kwa chipangizo chanu , ziribe kanthu kukula kapena kuthetsa, pogwiritsa ntchito masamu omwe tawafotokozera pamwambapa.