Ukulungiswa kwemaski vs usayizi wokubuka kuqala

By Technical specialist

Ukulungiswa kwemaski nosayizi wokubuka kuqala kuhlobene, kodwa akufani nesilinganiso. Ukulungiswa kwemaski kuchaza igridi yephikseli egcina isihloko. Usayizi wokuhlola kuqala uchaza ukuthi umhleli uba mkhulu kangakanani umphumela esikrinini sakho. Ukubuka kuqala okungu-300-wide-wide kungamela isithombe esikhulu kakhulu nemaski; ukusondeza lokho kubuka kuqala akungezi imininingwane emisha yemaski.

Ukudida kokubili kungaholela eziphethweni ezingamanga. I-cutout ingase ibukeke ibushelelezi uma ifakwe kuphaneli encane futhi iveze i-halo ngosayizi wokuthekelisa. Kungase futhi kubukeke kumile ekusondezeni ngokwedlulele yize lawo maphikseli imaski engabonakali ekusetshenzisweni okuvamile.

Osayizi abathathu bangaba khona ekuhleleni okukodwa

Ukugeleza kokusika kwesiphequluli kungabandakanya okungenani izikhala ezintathu zokuxhumanisa:

1. Usayizi womthombo: ububanzi obunqunyiwe nobude besithombe esikhethiwe.
2. Incazelo noma usayizi wemaski osebenzayo: igridi okubalwa kuyo isihloko futhi kuhlelwa kuyo.
3. Usayizi wokuhlola kuqala: ukumelwa okukaliwe okufanela indawo yomhleli etholakalayo.

Lawa masayizi angase afane, kodwa akudingekile. Umthombo omkhulu ungancishiswa ngaphakathi ukuze kutholwe imodeli ukuze kulawulwe isikhathi sokucubungula nenkumbulo. Imaski ewumphumela ingase ibe isikali esikhaleni sokuxhumanisa sokusebenza noma sokuthekelisa. Ekugcineni, isiphequluli sikala futhi inhlanganisela ukuze ilingane isikrini.

Easy Background Remover ingacubungula izithombe ezinkulu kakhulu ngokulungiswa okuncishisiwe kwangaphakathi futhi ibonise isexwayiso. Ukuthekelisa kusaqondise ubukhulu bomthombo. Lokhu kugcina ubukhulu bokuphumayo buwusizo, kodwa akukwazi ukusungula imininingwane yonqenqema ebingekho kumaski ebalwe ngaphakathi.

Yeka izitolo ze-mask pixel

Imaski ayisho ngempela i-stencil emnyama noma emhlophe. Iphikseli yemaski ngayinye ingabamba inani le-alpha ukusuka ngemuva ngokusebenzisa ukumbozwa kancane kuya kusihloko esigcinwe ngokugcwele.

Onqenqemeni lwento eqinile, uguquko lungathatha ibhande elincane kuphela. Ezinweleni ezithambile, uboya, ukufiphala, noma isithunzi, amanani abalulekile angafinyelela indawo ebanzi. Uma imaski ishintshwa usayizi, ukuhumusha kulinganisela amanani phakathi kwamasampula emaski asekuqaleni.

I-interpolation ingenza inguquko ibukeke bushelelezi. Ayikwazi ukubuyisela isimo esinembile somucu onyamalale ngesikhathi sokuqanjwa kokulungiswa okuphansi. Ubushelelezi kanye nemininingwane etholiwe yizimfanelo ezihlukene.

Kungani ukubuka kuqala okufakiwe kufihla amaphutha

Uma umhleli efaka isithombe esikhulu kuphaneli encane, amaphikseli amaningi omthombo anikela kuphikseli ngayinye ebonisiwe. Izimbobo ezincane, imiphetho yephikiseli eyodwa, kanye ne-alpha engalingani kungalinganiswa kude.

Lokho kuwusizo ekuqambeni: ungahlulela ukuthi isihloko sigxile yini nokuthi ngabe ukuhlukaniswa okubanzi kulungile yini. Akwanele ngekhwalithi yomkhawulo.

Ukubuyekeza okuthembekile kusebenzisa isikali esingaphezu kwesisodwa:

• umbono ofanele wesifundo sonke;
• ukusondeza okumaphakathi kohlaka kanye nezikhala zangaphakathi;
• ukusondeza okuphezulu kuphela ezindaweni ezisolisayo;
• usayizi ohlosiwe wokusetshenziswa kwesinqumo sokugcina.

Uma isithombe sizoba yi-avatar encane, ukonakala okuncane kungase kungabi nandaba. Uma izophrintwa ibe nkulu noma ibekwe phezu kwengemuva elimnyama, isici esifanayo singabonakala.

Kungani ukusondeza kungenza unqenqema oluhle lubukeke lubi

Ekusondeza okuphezulu, umhleli ukhulisa amaphikseli ahlukene. Izinyathelo zezitebhisi zilindeleke emingceleni edayagonali negobile ngenxa yokuthi igridi yephikseli ayiqhubeki. Inguquko ethambile ingase futhi ibukeke njengebhendi empunga uma iphikseli ngalinye likhuliswa.

Umbuzo awukona ukuthi amaphikseli abonakala ngamaphesenti angama-800 yini. Bazokwenza. Imibuzo ewusizo yilena:

• Ingabe umngcele usendaweni efanele?
• Ingabe unqenqema lubukeka lungokwemvelo kusayizi ohlosiwe wokubonisa?
• Ingabe ukhona umbala wangemuva omdala oxutshwe kumaphikseli ayingxenye?
• Ingabe imininingwane emincane ebalulekile igciniwe?
• Ingabe ukuguqulwa kwe-alpha kuyahambisana nesihloko?

Ungawasusi amaphikseli athambile avumelekile ngenxa nje yokuthi abukeka empunga ebhodini lokuhlola lapho usondeze kakhulu. Zihlole ngesizinda sangempela sendawo oya kuyo kuqala.

Ubukhulu bomthombo abuqinisekisi imininingwane yezinga lomthombo

I-PNG ethunyelwe ingaba nobubanzi nobude obufanayo njengomthombo kuyilapho imaski yayo ye-alpha isuka ekulungisweni okuphansi. Amamephu akhuphukayo afihla amaphikseli ombala anosayizi ogcwele. Ubukhulu befayela buhlala bulungile, kodwa ukunemba komngcele kukhawulelwe ulwazi olukumaski anokulungiswa okuphansi nanoma yikuphi ukucwengwa kamuva.

Lokhu kufana nokudweba uhlaka olulula ephepheni legrafu nokulukhulisa. Uhlaka olukhulisiwe lungenziwa bushelelezi, kodwa alutholi ukugoba okungakaze zidwetshwe.

Lokho akwenzi ukuchazwa okuncishisiwe kungasebenzi. Izifundo eziningi zinemiphetho ecacile, ebanzi, futhi usayizi wangaphakathi onengqondo unganikeza ibhalansi enhle phakathi kwejubane, ukusetshenziswa kwenkumbulo, kanye nekhwalithi. Kusho ukuthi imininingwane emincane idinga ukunakwa okukhethekile.

Amabhulashi adinga ukuhlanganisa imephu

Uma upenda Engeza noma Sula imivimbo ekubukeni kuqala okufakwe isikali, umhleli kufanele enze izixhumanisi zesikhombi emuva kumaski osebenzayo. Irediyasi yebhulashi nayo idinga ukutolika okungaguquki. Indingilizi yamaphikiseli ayishumi esikrinini akufanele ngephutha ibe ukuhlela okuhluke ngokuphelele ngenxa yokuthi ukubuka kuqala kushintshwe usayizi.

Ama-akhawunti amahle okwenza imephu:

• Isikali sokubuka kuqala kanye ne-offset;
• noma yikuphi ukuguqulwa kwe-zoom ne-pan;
• umthombo-kuya-mask isikali;
• isilinganiso se-pixel yedivayisi;
• i-brush radius kanye nokuthamba.

Umehluko omncane wokuzungezisa awunakugwenywa, kodwa imivimbo ephindaphindiwe kufanele ihlale lapho isikhombi sibonisa khona. Uma i-stroke ibonakala isusiwe, qala uhlole ukuthi ingabe ikhanvasi yanwetshwa noma ukuthi i-zoom yesiphequluli ishintshile yini isakhiwo ngaphambi kokuthi ucabange ukuthi imaski yemodeli ayilungile.

Ingemuva elikhanyayo nelimnyama liveza amaphikseli ahlukene

Amabhodi okuhlola axhumana ngokusobala, kodwa awawona ukuhlolwa kwekhwalithi yendawo yonke. Izinsalela eziphaphathekile ezivela kungemuva elimhlophe zingahlangana zibe izikwele ezikhanyayo. Umphetho omnyama unganyamalala ngokumelene nezikwele ezimnyama.

Buyekeza umphetho ofanayo phezu:

• umhlophe noma omunye umbala okhanyayo;
• omnyama noma omunye umbala omnyama;
• umbala eduze nendawo okuhlosiwe;
• obala uma ukuthekelisa kudinga i-alpha.

Unqenqema olusebenza kuzo zontathu izizinda luqine kakhulu. Uma okukhiphayo kokugcina kuhlala kusebenzisa ukugcwalisa okugxilile okukodwa, lungiselela leyo ndawo kunokujaha ukuphelela komcabango yonke indawo.

Izifihla-buso, umphetho wombala, nokunemba okungamanga

Ukulungiswa kwemaski kulawula lapho ukukhanya kushintsha khona. Ayiwususi ngokuqondile umbala wangemuva omdala osuvele uhlanganisiwe kumaphikseli onqenqema lomthombo. Imaski emise ngendlela efanele isengaveza i-halo ephaphathekile noma enemibala lapho umthombo uthwetshulwa ngengemuva eliqinile.

Ukunciphisa imaski kungase kufihle leyo nselele ngokusika esihlokweni. Ukuyinweba kungase kulondoloze imininingwane eyengeziwe nombala omdala. Ibhalansi yokulungisa efanele umumo nombala ngosayizi wendawo.

Yingakho umkhawulo wenombolo eyodwa ungenakuqinisekisa ukuthunyelwa ngaphandle okuhlanzekile. Ikhwalithi ye-Edge ihlanganisa ijometri yemaski, i-alpha eyingxenye, umbala womthombo, ingemuva lokukhiphayo, nesikali sokubuka.

Ukuhlolwa kokuthekelisa okusebenzayo

Ngaphambi kokukhipha i-cutout ebalulekile:

1. Qinisekisa ukuthi ukubuka kuqala kubonisa imaski ecwengisisiwe yamanje.
2. Faka isithombe bese uhlola isihloko sisonke.
3. Sondeza izinwele, uboya, izinto ezincane, izikhala, nezithunzi ezithintana naye.
4. Shintsha phakathi kwengemuva elikhanyayo nelimnyama.
5. Buyela kusayizi ohlosiwe wokusetshenziswa.
6. Khipha futhi uhlole i-PNG yangempela lapho iya khona uma kungenzeka.

Uma isithombe sicuphe ukucutshungulwa kokulungiswa okuncishisiwe, qaphela kakhulu imininingwane emincane. Ukwenza ngcono ukungeza nokusula mathupha kungalungisa inhloso, kodwa akukwazi ukudala kabusha ulwazi olungabonakali emthonjeni.

Ngesiteji semaski esizenzakalelayo, bona Lokho okubonwa imodeli yokusika ekudivayisi. Ukuze uqonde ukuthi kungani izilungiselelo eziphindayo zisengadinga okokufaka okulawulwayo nezinguqulo, funda Okuthekeliswayo okukhiqizekayo ngezilungiselelo ezifanayo.