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3.0: Utangulizi wa Kazi nyingi na za busara

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    181221

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    Upigaji picha wa kidijitali umebadilika sana asili ya kupiga picha. Hakuna tena picha iliyowekwa kwenye emulsion kwenye roll ya filamu. Badala yake, karibu kila nyanja ya kurekodi na kuendesha picha sasa inasimamiwa na hisabati. Picha inakuwa mfululizo wa namba, inayowakilisha sifa za mwanga unaovutia sensor ya picha. Tunapofungua faili ya picha, programu kwenye kamera au kompyuta inatafsiri namba na inawabadilisha kwenye picha inayoonekana. Picha editing programu inatumia polynomials tata kubadilisha picha, kuruhusu sisi kuendesha picha ili mazao maelezo, kubadilisha palette rangi, na kuongeza athari maalum. Kazi za inverse hufanya iwezekanavyo kubadili kutoka kwenye faili moja hadi nyingine. Katika sura hii, tutajifunza kuhusu dhana hizi na kugundua jinsi hisabati inaweza kutumika katika programu hizo.


    35-mm filamu na kadi za SD
    Kielelezo\(\PageIndex{1}\): filamu ya 35-mm, mara moja kiwango cha kukamata picha za picha, imefanywa kwa kiasi kikubwa kizamani na kupiga picha za digital. (mikopo “filamu”: mabadiliko ya kazi na Horia Varlan; mikopo “kadi za kumbukumbu”: mabadiliko ya kazi na Paul Hudson)