Umuyoboro wa Alpha wasobanuwe mucyongereza cyoroshye
Umuyoboro wa alfa ni igice cyishusho kibika ** uko bigaragara buri pigiseli igomba kuba **. Imiyoboro y’amabara isobanura umutuku, icyatsi, n’ubururu. Alpha asobanura neza.
Niba ukuyeho inyuma hanyuma wohereze PNG iboneye, ntabwo usiba ibara gusa. Urimo kwandika alfa indangagaciro zivuga: komeza iyi pigiseli, uzimye iyi mpande, cyangwa utume kariya gace katagaragara rwose.
Niyo mpamvu ibice bisobanutse bishobora kugaragara nkibisanzwe mugihe impande zoroshye zifashwe neza - nimpamvu ibyoherezwa hanze bisa nabi nubwo ingingo ubwayo ityaye.
Icyitegererezo cyoroshye
Kuri buri pigiseli, alpha isubiza ikibazo kimwe:
- bidasobanutse neza: ingingo irerekana rwose
- mucyo rwose: ntakintu kiva kuri iyo pigiseli gisigaye
- igice kibonerana: pigiseli ivanze nibintu byose bicaye inyuma
Gukorera mu mucyo ni impamvu ifatika umusatsi, ubwoya, hamwe nibintu byoroshye bishobora kugaragara ko byemewe aho gukata imikasi.
Impamvu iki kibazo cyo gukuraho inyuma
Gukuraho inyuma ntabwo ari “gusiba inyuma.” Igisubizo cyiza nacyo gikeneye imipaka yitwara neza mugihe ishusho ishyizwe ahandi.
Alpha niyo ituma ibyo bisubizo bishoboka:
- ingingo ireremba hejuru y’ibara rishya
- impande zoroshye zivanze aho kureba kashe
- igenzura ryerekanwa rishobora kwerekana uturere twubusa
Hatari alfa, “yakuweho inyuma” akenshi iba isahani yera cyangwa ikindi kintu cyuzuye.
Impande zoroshye vs impande zikomeye
Impande zikomeye ni ibyemezo bidasobanutse-cyangwa-mucyo. Impande zoroshye zikoresha kuvanga.
Ibyo kuvanga ni ingirakamaro kuri:
- imisatsi
- ubwoya
- plastiki-igice kibonerana
- icyerekezo-cyuzuye
Ni naho hagaragara ibibazo. Niba alfa itunguranye, ingingo isa naho yaciwe. Niba alpha irimo akajagari, ubona fringe na halo.
Icyo alfa atari cyo
Alpha ntabwo:
- inyuma yera
- igishushanyo mbonera ubwacyo
- garanti yubuziranenge bwuzuye
Kugenzura ni amasezerano yo kureba gusa. Umweru uracyari ibara. Alpha ni amakuru agaragara.
Urugero rufatika
Tekereza ibicuruzwa byashyizwe kumurongo wijimye:
- alfa nziza: isomo ryicaye neza nta mpande zijimye
- intege nke alpha: impande zera cyangwa amabara yoroheje aguma hafi ya kontour
Impande akenshi ni imyitwarire isigaye, ntabwo ari “PNG bug”.
Uburyo ibi bihuza na Easy Background Remover
Muri iki gikorwa:
- Fungura ishusho ishigikiwe
- Kuraho inyuma yimbere
- Gutunganya impande zose niba bikenewe
- Kohereza hanze PNG rero gukorera mu mucyo (alpha) birabitswe
Ntugomba gucunga imiyoboro ya alfa nkintoki zuzuye. Ukeneye kumva impamvu imiterere yo kohereza hanze hamwe nisuku yibintu.
Amakosa asanzwe
Ikosa 1: gufata alfa nka jargon idahwitse
Niba ukeneye kongera gukoresha inyuma, alfa niyo ngingo yose.
Ikosa 2: kwitiranya impande zoroshye ninyuma yinyuma
Ubwitonzi bumwe nibyiza. Ibiboneka bishaje-inyuma ibara ntabwo.
Amakosa 3: ongera uzigame muburyo buta umucyo
Niba alfa yatakaye, gukata kureka guhinduka.
Amakosa 4: gushinja igitekerezo aho kuba ku nkombe
Idosiye iboneye irashobora kugaragara nabi niba mask ikabije.
Imeza yihuse
| Igihe | Ubusobanuro busobanutse |
|---|---|
| Alpha | Ukuntu pigiseli igaragara |
| PNG isobanutse | Ishusho ishobora kugumana ubusa binyuze kuri alpha |
| Uruhande rworoshye | Alpha igice gikikije imbibi |
| Halo / fringe | Ibara ridakenewe kurokoka kurokoka |
Kubatangiye verisiyo yigitekerezo kimwe, reba [PNG ibonerana ni iki?](__ MDLINK0__). Kugirango usukure nyuma yo gukata, komeza hamwe na [Gusuka amabara no gutondeka ku bice](__ MDLINK1__).