Isifundo seFotohop: Isiphumo seHarris Shutter

IHarris Shutter esebenzayo ngu Umphumo we-3d ukuba ubonile ngokuqinisekileyo ngaphezu kwesihlandlo esinye. Sisiphumo sobuhle esinokubonakala sintle kuqulunqo lwe-surreal, ikamva kunye nengqondo. Singayifumana nokuba sisicelo seFotohop okanye ngokuthe ngqo kwikhamera yethu. Ukuze sikwenze ngesandla, kuya kufuneka sibambe iifilitha ezintathu zombala. Icebo lokucoca ulwelo elibomvu, elinye icebo lokuluhlaza, kunye nelinye icebo lokuluhlaza. Siza kubeka amacebo okucoca ekupheleni kwelensi yethu kwaye siya kuba nakho ukudubula ngenkululeko epheleleyo. Kule posi ngokucacileyo Siza kubona inkqubo emayilandelwe ukufezekisa isiphumo ngokunyanzelwa kweefoto.

• Kuqala, siza kuvula umfanekiso esiza kusebenza kuwo kwaye siya kuwusika ukuba kukho imfuneko. Gcina ukhumbula ukuba esi siphumo siya kusebenza ngcono ukuba sisebenza ngomfanekiso owahlukileyo kwaye ukuba sinokuba nemvelaphi emnyama okanye emnyama, ngcono kakhulu.

• Siza kuphinda kabini ukuphindaphinda umaleko wethu de sibe neikopi ezintathu, gcinani engqondweni ukuba sifuna imibala emithathu. Kwikopi nganye kwezi siza kwenza umaleko omtsha.

• Okulandelayo siya kuzifihla zonke izaleko ngaphandle kwezimbini ezisezantsi kwaye siya kuya kuludwe olubonakalayo ukuze si-tinte umbala obomvu ococekileyo. Siza kucofa kabini kumbala ongaphambili kwaye kwithebhu yombala ye-RGB siza kufaka ixabiso lama-255 ukuya kubomvu, ukusuka ku-0 ukuya kuluhlaza nokusuka ku-0 ukuya kuluhlaza okwesibhakabhaka. Sinomdla wokuba kuphela ziimbala ezibomvu ezigciniweyo.

• Emva kokuthinta olu luhlu siza kuguqula indlela yokudibanisa kuyo ukuphindaphinda. Oku kuyakufezekisa iziphumo ezifanayo ngokungathi sisebenzise icebo lokucoca obomvu ngekhamera yethu.

• Inyathelo elilandelayo iya kuba kukudibanisa zombini izaleko kwaye siza kuthiya kwakhona umaleko osisiphumo.

• Emva koko, ngoku siza kusebenzisa ezi zimbini zingaphezulu kwaye silandele inkqubo efanayo.
• Siza kuphinda sibuyele umbala ococekileyo ngombala ohlaza okwesibhakabhaka kunye nembiza yokupenda. Siza kucofa kabini kumbala ongaphambili kwaye sisebenzise la maxabiso alandelayo kwicandelo lombala we-RGB: Kubomvu 0, kuluhlaza 0 nakuhlaza okwesibhakabhaka 255.

• Siza kuphinda sisebenzise imowudi yokudibanisa ephindaphindayo kwaye sidibanise zombini iileya ukuphinda sinike igama umphumo kwakhona.

• Okokugqibela siya kulandela inkqubo efanayo kunye namanqanaba amabini aseleyo. Siza kuthinta umaleko oselubala ngombala oluhlaza ococekileyo. Kule meko siza kubuyela kwicandelo lemibala ye-RGB kwaye ngeli xesha siza kufaka i-255 eluhlaza kunye nexabiso le-0 kwimibala eseleyo.

• Siza kusebenzisa indlela yokudibanisa yokuphindaphinda.

• Siza kuwadibanisa omabini la maleko kunye nokunika elinye igama igama elishiyekileyo.
• Nje ukuba sicofe la maleko mathathu, into elandelayo esiza kuyenza kukuya kwiithowuni ezimbini eziphezulu, eziluhlaza okwesibhakabhaka kunye noluhlaza kwaye siya kusebenzisa indlela yokudibanisa ukukhanyisa. Oku kunomdla kuba xa ujonga, umfanekiso wokuqala uphinde wavela. Sisebenzisa oku, simanyene i-RGB "yamajelo" ukuze sithethe (bomvu, luhlaza, noblowu) kumfanekiso omnye kwaye ngenxa yoko siziphathe ngendlela efanayo naleyo yemo ye-RGB. Zonke iintlobo zee-shades ziphinde zenziwe ngemibala emithathu. Unomdla, akunjalo?

• Kodwa sizimisele ukwenza isiphumo se-3D kwaye koku kuyakufuneka sitsale umaleko lwethu kancinci kwindawo efanelekileyo. Kule meko siza kutsala ubume obuhlaza kunye nobuluhlaza, kodwa singasebenza ngenene ngombala obomvu ngokunjalo okanye singarhuqa ezimbini kuzo, enye okanye zontathu. Esi iya kuba sisigqibo somntu ngamnye.

• Ukuba into esiyikhangelayo sisiphumo seHarris Shutter, kuya kufuneka sirhuqe okanye sitshintshe indawo enemibala emithathu.

• Ukufezekisa isiphumo esiqhelekileyo se-3D kufuneka sigcine izalelu eziluhlaza kunye nokuhlaza kwindawo enye kwaye sitshintshe kuphela indawo yomaleko obomvu.

• Xa sifumana esona sisombululo sisiso, kuyakufuneka senze iqela leeleya kwaye sizinike igama elitsha. Siza kutsala umfanekiso osebenza kwiqela lezendlalelo kwaye kwimeko yokusikwa kwemifanekiso ngokungathandekiyo kuya kufuneka sisebenzise isixhobo sokucima ibrashi esasazeka ngokufanelekileyo kwaye sigqibezele iindawo ezifunwayo.

Gcina ukhumbula ukuba esi siphumo sinokufunyanwa ngeendlela ezahlukeneyo, sinokudlala ngeendlela ezine ezilinganisa imo yombala ye-CMYK (Cyan, Magenta, Mthubi kunye noMnyama). Ukuba senzile, xa sicofa ulwahlulo ngalunye kwezine kuya kufuneka sijonge i-hue nganye kwithebhu yombala ye-CMYK. Siza kufaka i-100% kwiCyan kunye nepesenti zero kwabanye. Emva kwexesha siza kwenza okufanayo ngombala we-magenta, tyheli kwaye ekugqibeleni sibe mnyama. Kuya kufuneka kongezwe ukuba kule meko sisebenzise umfanekiso omnye, kodwa inkqubo inokuba nobuchule ngakumbi xa sisebenzisa imifanekiso emithathu eyahlukeneyo yomntu omnye, kodwa ibanjiwe ngeendlela ezahlukeneyo. Kule nto kuyacetyiswa ukuba usebenzise imo yokudubula ngokulandelelana ukuba siza kusebenza nemifanekiso ethathwe sithi. Ngokwenene sisiphumo esihle kakhulu esinokongeza ubutyebi obuninzi ekuqambeni kwethu.