I-Dithering isasaza iipekseli ezimibalabala ezahlukahlukeneyo emfanekisweni ukwenza ukuba kubonakale ngathi kukho imibala ephakathi kwimifanekiso enomda we-palette. Oku kufumaneka kwiimifanekiso ezijoliswe kumaphepha ewebhu. Inkqubo yakho yokusebenza izenze ngokuzenzekelayo imifanekiso xa izicwangciso zakho zokubonisa zihlelwe kwimibono engu-256 okanye ngaphantsi.
I-Dithering idla ngokusetyenziswa ekunciphiseni ukubetha kwi-GIF kunye neenguqu ezigqityiweyo zobume. Uninzi lwesoftware lunikeza iinketho ezikuvumela ukuba ulawule ukubonakala kweepekseli ezihlakazekile; Ngokomzekelo, ukugqithisa kungaba ngumzekelo oqinileyo, isandi esingenanto okanye ukusabalalisa. Gcina ukhumbule ukuba ukunyuka kunokwandisa ubungakanani befayile yomfanekiso, kodwa kwiimeko ezininzi, ukubonakala okubonakalayo kulungele ukuhweba.
Indlela ecacileyo yokuqonda indlela ukusebenza kwemisebenzi ukuvula imifanekiso enemibala e- Photoshop . Ukusuka apho khetha iFayile> Thumela> Gcina kwiWebhu (uLifa) . Xa iphaneli ivula ukhethe ithebhu ye-4-Up. Uza kubona iinguqulelo ezine zomfanekiso kwaye enye ekhoneni elingasentla elingasentla ngumfanekiso wokuqala. Kule meko, umfanekiso u-1.23 mb ngobukhulu. Okubalulekileyo, eli jongane linikeza umboniso weemveliso zengqondo. Kukho izinto ezimbalwa zokuqwalasela kule mpaneli.
- Iyokuqala yiPalalet yokukhetha i-palette . Yintoni oku kwenzayo ukudala itafile yombala yenkcubeko ngamanqaku okutshekisha kwiimpawu ezibonakalayo kumfanekiso . Umzekelo, umfanekiso onemibala eluhlaza kwaye obomvu, njengomfanekiso, uvelisa itafile yombala eyenziwe ngokuyinhloko kwimifino kunye ne-blues. Ininzi imifanekiso igxininisa imibala kwiindawo ezithile zembonakalo.
- Umbala weTrafti ngenye into ekujonge kuyo. Le tafile yaziwa ngokusemthethweni njengeTable Lookup Table okanye CLUT. Okwenzayo kukuthatha imibala yasekuqaleni emfanekisweni kwaye uyayibuyisela kwimimandla eyahlukeneyo, imibala ethile yokwenza ukhangelelwano oluthile. Kwimeko yethu izigidi zemibala kwimifanekiso yokuqala zancishisiwe zibe yimibandela engama-32 kunye nama-grays, imifino kunye nama-reds amakhulu.
Khetha umfanekiso kwinqona eliphezulu elingakwesokudla, ukunciphisa inani lemibala ukuya kwi-32 uze uchukumise i-slider ye-Dither ibe ngu-0%. Khetha Ukwahlukana ukusuka kwindlela ye-Dither pop. Qaphela ukuba ubukhulu befayile buye bunqumla ukuya kuma-67 k kunye neentyatyambo eziluhlaza zibukeka ngathi uhlambala umbala. Olu khetho luvelisa umzekelo weengqungquthela zamachaphaza ezifana nobukhulu obufanayo kodwa zifakwe ecaleni okanye ziqhubekele kude ukuze zenze umthunzi othi "ngokukhawuleza" uhambelana nomfanekiso wokuqala.
Khetha umfanekiso kwikhoneni elingezantsi lasekhohlo kwaye utshintshe indlela yayo yokusabalalisa kwiPatheni . Into yokuqala ukuphawula ukuba ubungakanani befayile bunyuke kwi-111 1k. Oku kungenxa yokuba i-Photoshop isebenzisa iphethini yesikwele se-halftone ukufanisa nayiphi na imibala, kungekhona kwitheyibhile yombala. Umzekelo ukhangeleka kwaye xa uthelekisa umfanekiso ohlukileyo kunye nalo uza kubona umbala omninzi kunye nemifanekiso yenkcazelo.
Khetha umfanekiso kwicala eliphantsi lasekunene kwaye usethe indlela yayo yokusabalalisa ukuBetha . Kwakhona kukho ukukhutshwa kwefayile ephawulweyo kunye nokwanda kwimibala kunye nemifanekiso yenkcazelo. Yintoni eyenzekayo i-Photoshop ifake iprothementi yamanqaku afana ne-Diffusion yindlela, kodwa ngaphandle kokusabalalisa iphethini kwiipikseli ezikufutshane. Akukho zimbonakalo ezibonakalayo kunye neNkqubo yeeNkcenkceshela kunye nenani lemibala kwiTheyibhile Yemibala iye yanda.
Usenokuba uqaphele amaxesha nganye kwimifanekiso kwi-4-Up view. Musa ukuwaqwalasela ngqalelo ngenxa yokuba amaxesha amaninzi okukhuphela kwaye azinqabile ukuba, ukuba kunokwenzeka, ukuba kulungile. I-pop-down eceleni kwexesha ikuvumela ukuba ukhethe umda wendlela. Iinqununu zivela kwi-9600 bps (iiBits ngeSibini okanye kwiBaud Rate). Ingxaki apha ungenawo ulawulo malunga nendlela umsebenzisi ufumana ngayo umfanekiso .
Ngoko yintoni enye indlela yokukhetha? Yilapho ndihamba khona kwaye ndingaphenduli lo mbuzo. Xa kuziwa kwezo zigqibo zizithoba, kungekhona injongo. Ukwenza umnxeba wokugqibela.