RGB rang modeli

RGB rang modeli qo'shimcha rang modeli^[1] bo'lib, unda qizil, yashil va ko'k asosiy yorug'lik ranglari ranglarning keng doirasini yaratish uchun turli usullar bilan qo'shiladi. Modelning nomi qizil, yashil va ko'k, uchta asosiy rangning bosh harflaridan kelib chiqqan(ingliz tilidan olingan bo'lib, Red - qizil, Green - yashil, Blue - ko'k).^[2]

RGB rang modelining asosiy maqsadi televizorlar va kompyuterlar kabi elektron tizimlardagi tasvirlarni sezish, tasvirlash va namoyish qilishdir, garchi u an'anaviy fotografiyada ham ishlatilgan. Elektron asrdan oldin, RGB rang modeli allaqachon odamlarning ranglarni idrok etishiga asoslangan mustahkam nazariyaga ega edi.

RGB - bu qurilmaga bog'liq rang modeli: turli qurilmalar ma'lum RGB qiymatini boshqacha aniqlaydi yoki ko'paytiradi, chunki rang elementlari (masalan, fosfor yoki bo'yoqlar) va ularning qizil, yashil va ko'k darajalariga javobi ishlab chiqaruvchidan ishlab chiqaruvchiga farq qiladi, yoki hatto vaqt o'tishi bilan bir xil qurilmada. Shunday qilib, RGB qiymati turli xil ranglarni boshqarishsiz qurilmalarda bir xil rangni aniqlamaydi.^[3]^[4]

Odatda RGB kiritish qurilmalari rangli televizor va video kameralar, tasvir skanerlari va raqamli kameralardir. Odatda RGB chiqish qurilmalari turli texnologiyalarga ega televizorlar (CRT, LCD, plazma, OLED, kvant nuqtalari va boshqalar), kompyuter va mobil telefon displeylari, video proyektorlar, ko'p rangli LED displeylar va Jumbotron kabi katta ekranlardir. Boshqa tomondan, rangli printerlar RGB qurilmalari emas, balki odatda CMYK rang modelidan foydalanadigan ajratuvchi rangli qurilmalardir.

↑ Robert Hirsch (2004). Exploring Colour Photography: A Complete Guide. Laurence King Publishing. ISBN 1-85669-420-8.
↑ Fairman, Hugh S.; Brill, Michael H.; Hemmendinger, Henry (February 1997). "How the CIE 1931 color-matching functions were derived from Wright-Guild data". Color Research & Application 22 (1): 11–23. doi:10.1002/(SICI)1520-6378(199702)22:1<11::AID-COL4>3.0.CO;2-7. https://archive.org/details/sim_color-research-and-application_1997-02_22_1/page/11. ""The first of the resolutions offered to the 1931 meeting deﬁned the color-matching functions of the soon-to-be-adopted standard observer in terms of Guild’s spectral primaries centered on wavelengths 435.8, 546.1, and 700nm. Guild approached the problem from the viewpoint of a standardization engineer. In his mind, the adopted primaries had to be producible with national-standardizing-laboratory accuracy. The first two wavelengths were mercury excitation lines, and the last named wavelength occurred at a location in the human vision system where the hue of spectral lights was unchanging with wavelength. Slight inaccuracy in production of the wavelength of this spectral primary in a visual colorimeter, it was reasoned, would introduce no error at all.""
↑ GrantMeStrength „Device-Dependent Color Spaces - Win32 apps“ (en-us). learn.microsoft.com. Qaraldi: 2022-yil 24-oktyabr.
↑ Crean, Buckley. "Device Independent Color—Who Wants It?". SPIE 2171: 267. Archived from the original on 2023-02-04. https://web.archive.org/web/20230204075038/https://www.imaging.org/site/PDFS/Papers/1997/RP-0-67/2398.pdf. Qaraldi: 2022-12-16. RGB rang modeli]]

[1] Robert Hirsch (2004). Exploring Colour Photography: A Complete Guide. Laurence King Publishing. ISBN 1-85669-420-8.

[2] Fairman, Hugh S.; Brill, Michael H.; Hemmendinger, Henry (February 1997). "How the CIE 1931 color-matching functions were derived from Wright-Guild data". Color Research & Application 22 (1): 11–23. doi:10.1002/(SICI)1520-6378(199702)22:1<11::AID-COL4>3.0.CO;2-7. https://archive.org/details/sim_color-research-and-application_1997-02_22_1/page/11. ""The first of the resolutions offered to the 1931 meeting deﬁned the color-matching functions of the soon-to-be-adopted standard observer in terms of Guild’s spectral primaries centered on wavelengths 435.8, 546.1, and 700nm. Guild approached the problem from the viewpoint of a standardization engineer. In his mind, the adopted primaries had to be producible with national-standardizing-laboratory accuracy. The first two wavelengths were mercury excitation lines, and the last named wavelength occurred at a location in the human vision system where the hue of spectral lights was unchanging with wavelength. Slight inaccuracy in production of the wavelength of this spectral primary in a visual colorimeter, it was reasoned, would introduce no error at all.""

[3] GrantMeStrength „Device-Dependent Color Spaces - Win32 apps“ (en-us). learn.microsoft.com. Qaraldi: 2022-yil 24-oktyabr.

[4] Crean, Buckley. "Device Independent Color—Who Wants It?". SPIE 2171: 267. Archived from the original on 2023-02-04. https://web.archive.org/web/20230204075038/https://www.imaging.org/site/PDFS/Papers/1997/RP-0-67/2398.pdf. Qaraldi: 2022-12-16. RGB rang modeli]]

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