Koyo game da yadda ake amfani da tsabar gari a cikin hoto na hoto
Ana amfani da ragamar kwakwalwa a cikin kwakwalwa don sanya kananan ƙananan bayanai cikin harshe da mai amfani zai iya karantawa. Kamar dai yadda raguwa su ne tushen tsarin da aka yi amfani da su a kwamfutarka, ana amfani da su a daukar hoto don ɗaukar hoton.
Mene ne Bit?
Kalmar "bit" ita ce kalma da aka fara amfani dashi a cikin kwakwalwa na kwamfuta, inda yake nufi da "na'urar binary", kuma yana nufin wani ɗan ƙaramin bayani. Yana da darajar ko dai 0 ko 1.
A ɗaukar hoto na zamani, an sanya shi zuwa baki da kuma 1 zuwa fari.
A cikin harshen binary (tushe-2), "10" daidai yake da 2 a cikin tushen-10, kuma "101" daidai yake da 5 a cikin tushen-10. (Don ƙarin bayani game da musayar ginshiƙan-2 lambobi zuwa tushe-10, ziyarci shafin yanar gizon unitconversion.org.)
Ta yaya Bits Record Color
Masu amfani da shirye-shiryen shiryawa na dijital, irin su Adobe Photoshop, za su san sababbin hotuna. Ɗaya daga cikin mafi yawan al'ada shi ne siffar 8-bit, wanda yana da sauti 256, yana jeri daga "00000000" (lamba mai lamba 0 ko baki) zuwa "11111111" (lamba mai lamba 255 ko fari).
Yi la'akari da cewa akwai lambobi 8 a cikin waɗannan jerin. Wannan shi ne saboda 8 bits daidai daya byte da daya byte iya wakilci 256 jihohin daban-daban (ko launuka). Sabili da haka, ta hanyar sauya haɗin waɗannan 1 da 0 a cikin bit bit, kwamfutar zata iya ƙirƙirar ɗaya daga cikin 256 bambance-bambancen launi (2 ° 8th power - '2' yana fitowa daga lambar binary na 1 da 0 na).
Ƙarin fahimtar 8-bit, 24-bit, da 12- ko 16-bit
Hotunan hotuna JPEG sukan kira su hotuna 24-bit. Wannan shi ne saboda wannan tsarin fayil zai iya adana har zuwa 8 bits na bayanai a kowanne daga cikin tashoshi uku (RGB ko ja, kore, da kuma blue).
Ana amfani da ƙananan rates kamar 12- ko 16-bit a cikin yawancin DSLRs don ƙirƙirar ƙaramin launi na launuka. Hoton 16-bit yana iya samun nauyin 65,653 na bayanin launi (2 '16th iko) da kuma hoton 12-bit yana iya samun matakan 4,096 (2'12 iko)
DSLR yayi amfani da mafi yawan sautunan a kan tasha mafi kyau, wanda ya bar ƙananan sauti don ƙananan tashoshin (inda idon mutum yake a mafi mahimmanci). Ko da hoton 16-bit, alal misali, za a sami sauti 16 kawai don bayyana mafi kuskure a cikin hoto. Tsarin haske, idan aka kwatanta, zai sami sauti 32,768!
Bayanin Game da Bugu da Ƙari da Fari Images
Matsayin kwakwalwan inkjet na aiki a kan sikelin 8-bit. Lokacin da kake buga hotunan baki da fari a kan inkjet, tabbas kada a saita shi don buga ta kawai kawai inks na launin baki (bugun giraben digiri).
Wannan wata hanya ce mai kyau don ajiye tawada lokacin bugawa da rubutu, amma ba zai samar da hoto mai kyau ba. Ga dalilin da ya sa ...
Mai kwakwalwa mai matsakaici yana da ɗaya, watakila 2, kwakwalwa na tawada na baki da kuma 3 kwakwalwa na launi (a cikin CMYK). Kwamfuta yana watsa bayanan hoton da za a buga ta amfani da 256 bambance-bambancen launi.
Idan muna dogara ne kawai da kwakwalwar inkarin baki don rike wannan ɗakin, cikakkun bayanai game da hoton za su yi hasara kuma ba za a buga kwararru ba daidai. Yana kawai ba zai iya samar da 256 bambance-bambance ta amfani da nau'in katako guda.
Ko da yake hoton da baƙar fata ba shi da launin launi, har yanzu yana dogara akan waɗannan tashoshin launi 8-bit masu kyau don samar da kowane nau'i na baki, launin toka, da fari.
Wannan dogara ga tashoshin launi yana da mahimmanci ga kowane mai ɗaukar hoto ya fahimci idan suna son hotunan dijital tare da kama da hoton baki da fari wanda aka samar da fim da takarda.