Menene PNG na zahiri?

By Technical specialist

PNG mai fa’ida shine fayil ɗin hoto inda ake nufin wasu sassa don nuna ** babu wani abu a bayan batun **, don haka duk abin da kuka sanya fayil ɗin a saman yana iya nunawa ta hanyar. Wannan “ba komai” ba farar fenti bane kuma ba tsarin duba launin toka ba. Bayanan gaskiya ne, yawanci ana siffanta su da alpha.

Idan kuna aiki tare da yanke samfur, avatars, lambobi, nunin faifai, ko abubuwan haɗawa masu sauri, wannan yana da mahimmanci fiye da yadda yake sauti. Mutane da yawa suna cewa “Ina buƙatar cire bangon baya,” amma abin da suke buƙata shine fayil ɗin da zai iya zama mai tsabta a saman wani shimfidar wuri ba tare da jawo tsohon bango tare ba.

The sauki ra’ayin

Yi tunanin hoto na yau da kullun azaman rectangle cike da pixels. Kowane bangare na wannan rectangular yana da launi na bayyane. PNG mai haske yana canza wannan ƙa’idar:

• batun yana kiyaye pixels bayyane
• wurin da aka cire ya zama fili fili
• wata takarda, launi, ko hoto na iya bayyana bayanta daga baya

Abin da ya sa PNGs na gaskiya ya zama ruwan dare ga keɓaɓɓun abubuwa da mutane. Suna ba ku sassauci bayan fitarwa.

Me yasa akwai samfotin duba allo

Idan nuna gaskiya “ba komai,” ta yaya software za ta nuna shi?

Yawancin masu gyara da masu kallo suna amfani da tsarin duba allo don wakiltar yankuna masu gaskiya. Allon duba ba shine ba wani ɓangare na fayil ɗin ba. Tsarin samfoti ne kawai don idonka zai iya sanin inda alfa ke wanzu.

Wannan yana ɗaya daga cikin rikice-rikicen mafari na yau da kullun:

• “Na fitar da fayil ɗin kuma yanzu na ga murabba’ai”
• “Mai cire bangon baya ya kara launin toka”

Yawancin lokaci murabba’ai shine kawai hanyar mai kallo don nuna gaskiya. Fayil ɗin kanta yana yin abin da ya dace.

M PNG vs farin bango

Wadannan sakamako guda biyu galibi suna haɗuwa, amma sun bambanta.

PNG mai fa’ida

• an cire bangon baya zuwa alfa
• yana aiki da kyau lokacin da zaku iya sanya batun akan bangarori daban-daban daga baya
• mafi kyau don haɗawa, shimfidu, da sake amfani da sassauƙa

Farin bango

• baya har yanzu yana can, fari kawai
• zai iya zama da amfani ga kasuwanni, takardu, ko fitarwa mai sauƙi
• ƙarancin sassauƙa idan kuna son batun akan launi, gradient, ko wani hoto

Babu wanda ya fi “ƙwararru” a kowane hali. Suna magance matsaloli daban-daban. Matsala tana farawa ne lokacin da wani ya yi tsammanin ɗayan kuma ya fitar da ɗayan ba da gangan ba.

Me yasa PNG ke da mahimmanci a cikin wannan aikin

PNG ita ce amsar da ta dace saboda ana goyan bayanta sosai kuma an fahimce ta don fitowar gaskiya. Kuna iya buɗe hoton JPG, WebP, AVIF, ko HEIC azaman shigarwa, cire bango, da fitar da yanke kamar PNG.

Wannan yana nufin tambayar tafiyar aiki ba:

“Shin ainihin fayil ɗin ya riga ya bayyana?”

Yana da:

“Zan iya ware batun kuma in adana sakamakon a cikin sigar da ke kiyaye gaskiya?”

Don Easy Background Remover, amsar ƙarshe ita ce PNG.

Abin da alfa ke nufi ba tare da jujjuya jargon ba

Alpha shine ɓangaren bayanan hoto wanda ke bayyana yadda pixel ya kamata ya zama bayyane.

• cikakken bayyane pixel: batun yana nuna gaba daya
• cikakken pixel m: babu abin da ya rage daga wannan pixel
• bayyananniyar ɓangarori: sassauƙa mai laushi ko tsaka-tsaki na iya wanzuwa

Ba kwa buƙatar zama injiniyan hoto don amfani da wannan ra’ayin. A cikin rayuwa ta ainihi, kawai yana bayyana dalilin da yasa gefuna masu laushi zasu iya zama na halitta lokacin da yanke yana da kyau, da kuma dalilin da yasa fitar da fitar da kaya ba ta da kyau lokacin da aka rasa gaskiya ko kuma ba a tsaftace gefen ba.

Inda PNGs masu fa’ida ke da amfani

PNGs masu fa’ida suna da amfani musamman lokacin da wannan batu na iya buƙatar motsawa tsakanin mahallin:

• jerin samfuran da katunan talla
• hotunan bayanin martaba da shafukan kungiya
• zane-zane da docs
• labule, lambobi, da kuma sauƙin bugawa
• overlays don thumbnails ko izgili

Roko ba “PNG yana da zato ba.” Roko shine cewa batun ya kasance mai sake amfani da shi.

Abin da PNG mai gaskiya ba ya warware shi da kansa

PNG mai haske ba hujja ta atomatik ba ce ta sakamako mai tsabta.

Kuna iya samun:

• m gefuna
• ragowar halos daga tsohon bango
• rasa gashin gashi
• yanke sasanninta akan batutuwa masu ƙarancin bambanci

Fassara yana kiyaye yankewa. Ba ya gyara yanke rauni da kanta.

Shi ya sa binciken gefen ya shafi al’amura. Tsarin fayil da ingancin yankewa suna aiki tare, amma ba abu ɗaya bane.

Misali mai amfani

Ka yi tunanin wani mug da aka yi hoto akan farar. Idan kun cire bango kuma ku fitarwa azaman PNG na zahiri, zaku iya sanya wannan mug akan:

• banner mai launi
• wani gradient gwarzo block
• tile na kasuwa
• nunin gabatarwa

Idan kuna fitarwa tare da farar bango a maimakon haka, ƙoƙon na iya kasancewa mai amfani, amma farar murabba’i ko farantin yana iyaka inda yayi kama da na halitta. Sigar bayyananne yana ba ku ƙarin sake amfani.

Kuskuren gama gari

Kuskure 1: ɗaukan farin bango yana nufin gaskiya

Bai yi ba. Fari har yanzu bayanin launi ne. Fassara shine rashin bayanan bayanan baya bayyane.

Kuskure 2: tunanin abin dubawa wani bangare ne na fayil ɗin da aka fitar

Yawancin lokaci babban taron samfoti ne kawai. Bincika fayil ɗin a cikin wani mahallin daban kafin yanke shawarar wani abu ba daidai ba.

Kuskure 3: fitarwa zuwa tsarin da ke sauke alpha

Idan kuna buƙatar bayyana gaskiya, isarwar ku ta ƙarshe yakamata ta kiyaye ta. A cikin wannan aikin, wannan yana nufin PNG.

Kuskure 4: zargi PNG don mummunan gefuna

Idan gefen yayi kama da mara kyau, batun sau da yawa shine ingancin abin rufe fuska ko rashin tacewa, ba gaskiyar cewa fayil ɗin PNG bane.

Tebur mai sauri

| bukata | Mafi kyawun sakamako | |------------------| | Sake amfani da batun akan fage da yawa | M PNG | | Ajiye kafaffen shimfidar wuri | Fari ko launi mai launi | | Bayyana wa abokin aiki abin da “babu bango” ke nufi | “Transparent PNG tare da alpha” | | Bincika ko da gaske yanke ya yi aiki | Duban allo + duban gefen |

Yadda ake ɗaukar Ingilishi-Turanci

PNG bayyananne hanya ce mai amfani don kiyaye batun yayin cire bayanan da ake iya gani, saboda haka zaku iya sanya wannan batun a tsaftace wani wuri dabam daga baya.

Wannan shi ne dukan ra’ayin. Jargon na zaɓi ne.

Don aikin hannu-kan aikin, ci gaba da Yadda ake yin PNG na gaskiya. Don bangaren shigarwa/fitarwa, duba Tsarin hotuna masu goyan baya.