Los piav qhia ntxiv, peb pom luminance li sib txawv ntawm lub teeb hauv greysthaum chroma yog cov xim sib txawv. … Cov xim muaj zog thaum lub teeb muaj qhov ci. Peb pom xim hauv cov duab vim lub teeb.
Koj txhais li cas los ntawm luminance thiab chrominance?
Hauv qhov system no, Y yog lub npe hu ua Luminance channel thiab nws sawv cev qhov ci hauv daim duab. Thaum Cb thiab Cr yog Chrominance channel sawv cev rau cov xim ntawm daim duab.
Puas chrominance ntau dua luminance?
tib neeg lub qhov muag muaj 20-30 npaug ntau tus pas nrig (brightness detectors) dua cones (xim detectors), yog li peb muaj ntau npaum li cas thiab rhiab heev rau brightness(luminance) dua xim (chrominance).
lo lus chrominance txhais li cas?
: qhov sib txawv ntawm cov xim thiab cov xim xaiv ntawm tib lub luminous siv hauv cov xim TV.
chrominance ntawm koj lub TV txhais li cas?
Xim cov ntaub ntawv, chrominance, lossis tsuas yog chroma tseem ceeb ib yam nkaus, tab sis tsis tshua pom kev. Dab tsi chroma subsampling ua yog txo tus nqi ntawm cov ntaub ntawv xim hauv lub teeb liab kom tso cai rau cov ntaub ntawv luminance ntau dua. Qhov no tso cai rau koj tswj cov duab kom meej thaum txo cov ntaub ntawv loj txog 50%.
