Iyini i-PNG esobala?

By Technical specialist

I-PNG esobala iyifayela lesithombe lapho ezinye izingxenye zenzelwe ukubonisa akukho lutho ngemuva kwesihloko, ngakho-ke noma yini obeka ifayela phezu kwayo ingabonakala. Lokho “lutho” akulona upende omhlophe futhi akuyona iphethini yokuhlola empunga. Kuyidatha ebonisa ngale, ngokuvamile echazwa ngokuthi alpha.

Uma usebenza ngokusikwa komkhiqizo, ama-avatar, izitika, amaslayidi, noma izinhlanganisela ezisheshayo, lokhu kubaluleke ngaphezu kokuzwakalayo. Abantu abaningi bathi “Ngidinga ingemuva lisuswe,” kodwa abakudingayo ngempela ifayela elingakwazi ukuhlala ngokuhlanzekile phezu kwesinye isakhiwo ngaphandle kokuhudula ingemuva elidala.

Umbono olula

Cabanga ngesithombe esijwayelekile njengonxande ogcwele amaphikseli. Yonke ingxenye yalowonxande inombala obonakalayo. I-PNG esobala ishintsha lowo mthetho:

• Isihloko sigcina amaphikseli abonakalayo
• ingemuva elisusiwe liba yindawo esobala
• omunye umbhalo, umbala, noma isithombe singavela ngemuva kwayo kamuva

Yingakho ama-PNG asobala evame kakhulu ezintweni ezizimele nakubantu. Bakunikeza ukuguquguquka ngemuva kokuthekelisa.

Kungani ukubuka kuqala kwebhodi lokuhlola kukhona

Uma ukubeka izinto obala “kuyinto,” isofthiwe ingakubonisa kanjani?

Abahleli abaningi nezibukeli basebenzisa iphethini yebhodi lokuhlola ukuze bamele izifunda ezibonisa ngale. Ibhodi lokuhlola aliyona ingxenye yefayela **. Kungumhlangano wokubuka kuqala ukuze iso lakho likwazi ukubona ukuthi i-alpha ikhona.

Lokhu kungenye yokudideka okuvame kakhulu kwabaqalayo:

• “Ngithumele ifayela futhi manje ngibona izikwele”
• “Isikhiphi sangemuva sengeze iphethini empunga”

Ngokuvamile izikwele ziyindlela yesibukeli yokubonisa izinto obala. Ifayela ngokwalo lenza into efanele.

I-PNG esobala iqhathaniswa nengemuva elimhlophe

Le miphumela emibili ivame ukuxutshwa, kodwa ihlukile.

I-PNG esobala

• ingemuva lisuswa ku-alpha
• isebenza kahle lapho ungase ubeke isihloko ezizindeni eziningi ezahlukene kamuva
• okungcono kakhulu ukuhlanganisa, izakhiwo, nokusetshenziswa kabusha okuguquguqukayo

Ingemuva elimhlophe

• isizinda sisekhona, simhlophe nje
• kungaba usizo ezimakethe, amadokhumenti, noma ukuthunyelwa ngaphandle okulula
• aziguquguquki kancane uma kamuva ufuna isihloko phezu kombala, i-gradient, noma esinye isithombe

Akekho noyedwa “ongochwepheshe kakhulu” kuzo zonke izimo. Baxazulula izinkinga ezahlukene. Inkinga iqala lapho othile elindele eyodwa futhi ngephutha akhiphe enye.

Kungani i-PNG ibalulekile kulokhu kuhamba komsebenzi

I-PNG iyimpendulo esebenzayo ngoba isekelwa kabanzi futhi iqondwa kabanzi ngokukhipha okusobala. Ungakwazi ukuvula isithombe se-JPG, i-WebP, i-AVIF, noma i-HEIC njengokufaka, ususe ingemuva, futhi uthumele okusikiwe njenge-PNG.

Lokho kusho ukuthi umbuzo wokuhamba komsebenzi awukho:

“Ingabe ifayela lokuqala belivele lisobala?”

Ithi:

“Ngingakwazi yini ukuhlukanisa isihloko bese ngigcina umphumela ngefomethi egcina obala?”

Ku-Easy Background Remover, leyo mpendulo yokugcina ithi PNG.

Kusho ukuthini u-alpha ngaphandle kokulahlwa kwejagoni

I-Alpha ingxenye yedatha yesithombe echaza ukuthi iphikseli kufanele ibonakale kanjani.

• I-pixel ebonakalayo ngokugcwele: isihloko sibonisa ngokuphelele
• I-pixel esobala ngokugcwele: akukho lutho oluvela kuleyo pixel esele
• ukubonakala obala ngokwengxenye: izinguquko ezithambile noma ezingafihli lutho zingaba khona

Awudingi ukuba unjiniyela wezithombe ukuze usebenzise lo mbono. Empilweni yangempela, ivele ichaze ukuthi kungani amaphethelo athambile angabukeka engokwemvelo lapho i-cutout ilungile, nokuthi kungani ukuthunyelwa kwamanye amazwe kubukeka kukubi lapho ukukhanya kulahleke noma unqenqema lungalungiswanga.

Lapho ama-PNG asobala ewusizo

Ama-PNG abonisa ngale awusizo ikakhulukazi lapho isihloko esifanayo singase sidinge ukuhamba phakathi kwezimo:

• Ukufakwa kuhlu kwemikhiqizo namakhadi ephromo
• izithombe zephrofayili namakhasi weqembu
• ama-slide decks namadokhumenti
• amalebula, izitika, nokulungiselela ukuphrinta okulula
• ukumbondelana kwezithonjana noma ama-mockups

Isikhalazo asikona ukuthi “i-PNG imnandi.” Isikhalazo siwukuthi isihloko sihlala sisebenziseka kabusha.

Lokho i-PNG esobala ayixazululi ngokwayo

I-PNG esobala akubona ubufakazi obuzenzakalelayo bomphumela ohlanzekile.

Usengaba:

• imiphetho emangelengele
• ama-halo asele avela kusizinda esidala
• izintambo zezinwele ezilahlekile
• nqamula amakhona ezifundweni ezinomehluko ophansi

Ukungafihli kulondoloza ukusika. Ayilungisi i-cutout ebuthakathaka iyodwa.

Kungakho ukuhlolwa konqenqema kubalulekile. Ifomethi yefayela kanye nekhwalithi yokusika zisebenza ndawonye, ​​kodwa aziyona into efanayo.

Isibonelo esisebenzayo

Cabanga ngenkomishi ethwetshulwe emhlophe. Uma ususa ingemuva futhi uthumele njenge-PNG esobala, ungakwazi kamuva ukubeka leyo nkomishi kuyo:

• ibhanela elinemibala
• i-gradient hero block
• ithayela lemakethe
• isethulo seslayidi

Uma ukhipha ngengemuva elimhlophe esikhundleni salokho, inkomishi isengasebenziseka, kodwa unxande omhlophe noma ipuleti ikhawulela lapho ibukeka ingokwemvelo. Inguqulo ebonisa ngale ikunikeza ukusetshenziswa kabusha okwengeziwe.

Amaphutha ajwayelekile

Iphutha 1: ukuthatha ingemuva elimhlophe lisho obala

Ayikwenzi. Okumhlophe kusewulwazi lombala. Ukubonisa ngale ukungabikho kwedatha yangasemuva ebonakalayo.

Iphutha 2: ukucabanga ukuthi ibhodi lokuhlola liyingxenye yefayela elithunyelwe

Ngokuvamile kumane kuwumhlangano wokubuka kuqala. Hlola ifayela ngomongo ohlukile ngaphambi kokunquma ukuthi kukhona okungalungile.

Iphutha 3: ukuthekelisa kufomethi ewisa i-alpha

Uma udinga ukuba sobala, okulethwa kwakho kokugcina kufanele ukulondoloze. Kulokhu kuhamba komsebenzi, lokho kusho i-PNG.

Iphutha 4: ukusola i-PNG ngamaphethelo amabi

Uma unqenqema lubukeka lumpofu, inkinga imvamisa ikhwalithi yokufihla ubuso noma ukuntuleka kokucwenga, hhayi iqiniso lokuthi ifayela liyi-PNG.

Ithebula elisheshayo

I-takeaway yesiNgisi esicacile

I-PNG ekhanyelayo iyindlela esebenzayo yokugcina isihloko ngenkathi ususa ingemuva elibonakalayo, ukuze ukwazi ukubeka leso sihloko ngokuhlanzekile kwenye indawo kamuva.

Yilowo mqondo wonke. Ijagoni uyazikhethela.

Ngohlelo lokusebenza olusebenza ngezandla, qhubeka ngokuthi Indlela yokwenza i-PNG ekhanye ngale. Ngohlangothi lokokufaka/okukhiphayo, bona Amafomethi esithombe asekelwe.