Dithering yada launuka masu launin daban-daban a cikin hoton don ya bayyana kamar suna da launuka masu tsaka-tsaki a cikin hotuna tare da iyakar launi. Ana samun wannan kyauta tare da zane-zane da aka tsara domin shafukan intanet.Yanjin aikinku zai zubar da hotuna ta atomatik lokacin da aka saita saitunanku zuwa 256 launuka ko žasa.
Ana amfani da dithering don rage raguwa a cikin GIF tare da fassarar launi na digiri. Yawancin software yana ba da damar da za ka iya sarrafa bayyanar batutuwa da aka watsar; Alal misali, dithering zai iya zama wani tsari m, bazuwar amo, ko rarraba. Ka tuna cewa dithering zai iya ƙara girman fayil ɗin hoto, amma a yawancin lokuta, ingantaccen bayyanar ya cancanci cinikin.
Kyakkyawan fahimtar yadda zakuyi aiki shine bude hotunan hoton a Photoshop . Daga can zaɓa Fayil> Fitarwa> Ajiye don yanar gizo (Legacy) . Lokacin da kwamitin zai buɗe zaɓi 4-Up tab. Za ku ga 4 nau'i na hoton kuma wanda a cikin kusurwar hagu na sama shine asalin asalin. A wannan yanayin, hoton yana da 1.23 mb a girman. Ainihin, wannan rukunin yana baka samfuri na sakamakon ingantawa hoton. Akwai abubuwa biyu don kulawa da wannan rukuni.
- Na farko shi ne zabi mai zauren fasali . Abin da wannan shine don ƙirƙirar launi launi ta al'ada ta hanyar samarda launuka daga maɗaukakan bakan a cikin hoton . Alal misali, hoton da kawai launuka kore da ja, kamar hoton, ya samar da launi mai launi wanda aka fi mayar da launin ganye da kuma blues. Yawancin hotuna suna nuna launi a wasu yankunan bakan.
- Launi Launi shi ne wani abu don duba. Wannan teburin an san shi da sunan launi Lissafin Launi ko CLUT. Abin da ya yi shi ne ɗaukar launuka na ainihi a cikin hoto kuma ya rage su zuwa daban-daban, ƙananan launi don ƙirƙirar wani abu. A cikin yanayinmu miliyoyin launuka a cikin asalin asalin sun rage zuwa launuka 32 da grays, greens da reds predominating.
Zaži hoton a kusurwar dama, rage yawan launuka zuwa 32 kuma tura Dither slider zuwa 0%. Zaɓi Diffusion daga Dither hanya ya tashi. Yi la'akari da cewa girman fayil ya zubar da shi zuwa 67 k da kuma koren furanni kamar wanke launi. Wannan zabin yana haifar da dullin da ba su da ƙari da suke da girman girman ɗaya amma suna kusa da su ko ƙari don samun inuwa da "a hankali" ya dace da hoton asali.
Zaži hoton a gefen hagu na ƙasa kuma canza yanayin da aka yada zuwa Tsarin . Abu na farko da ya lura cewa girman fayil ya karu zuwa 111 1k. Wannan shi ne saboda Photoshop yana amfani da tsari mai kama da zane-zane don simintin kowane launi, ba cikin launi ba. Sakamakon yana da kyau sosai kuma idan kun kwatanta hoton Diffusion tare da wannan za ku ga kadan da launi da hotunan hoto.
Zaži hoton a kasan dama kusurwa kuma saita hanyar watsawa zuwa batu . Bugu da kari akwai ƙaramiyar girman fayil din tare da karuwa a launi da hoto. Abin da ya faru shi ne Photoshop ya yi amfani da tsari na bazuwar kama da hanyar Diffusion dither hanya, amma ba tare da nuna bambanci ba a kusa da pixels. Ba a sami alamomi tare da hanyar ƙwayar Noise ba kuma yawan launuka a Launi Launi sun karu.
Kuna iya lura da lokuta don kowane hotunan a cikin 4-Up view. Kada ku kula da su sosai saboda suna lokaci saukewa kuma suna da wuya, idan har abada, daidai. Sauran bayanan kusa da lokaci ya baka damar zabar bandwidth. Zaɓuɓɓukan zaɓuɓɓuka daga madaidaicin modem 9600 bits (Bits Per Second or Baud Rate) zuwa sauri. Matsalar a nan shi ne ba ku da iko kan yadda mai amfani yake karɓar hoton .
To, wane tafarkin Dither za i? Wannan shi ne inda zan bar baya kuma kada in amsa wannan tambayar. Idan ya zo ga waɗannan yanke shawara sun kasance na sirri ne, ba ma'ana ba. Kuna kira na ƙarshe.