22.02.25Monochrome koob yees duab ntes tsuas yog qhov siv ntawm lub teeb hauv greyscale, thaum lub koob yees duab xim tuaj yeem ntes cov duab xim, hauv daim ntawv Liab, Ntsuab thiab Xiav (RGB) cov ntaub ntawv ntawm txhua pixel. Thaum tau txais cov ntaub ntawv xim ntxiv tuaj yeem muaj txiaj ntsig, lub koob yees duab monochrome yog qhov rhiab dua, nrog qhov zoo ntawm kev daws teeb meem zoo.
Mono lub koob yees duab ntsuas qhov teeb pom kev zoo uas tsoo txhua pixel, tsis muaj cov ntaub ntawv sau tseg txog lub wavelength ntawm photons ntes. Txhawm rau tsim lub koob yees duab xim, daim phiaj uas muaj cov xim liab, ntsuab thiab xiav yog muab tso rau hauv ib qho monochrome sensor, hu ua Bayer daim phiaj. Qhov no txhais tau tias txhua pixel ces kuaj pom lub teeb liab, ntsuab lossis xiav xwb. Txhawm rau tsim cov duab xim, cov RGB siv qhov tseem ceeb sib xyaw ua ke - qhov no yog tib txoj kev siv computer saib siv los tso saib xim.
Daim phiaj Bayer yog cov qauv rov qab ntawm cov lim dej liab, ntsuab thiab xiav, nrog ob lub pixels ntsuab rau txhua qhov liab lossis xiav pixel. Qhov no yog vim ntsuab wavelengths yog qhov muaj zog tshaj plaws rau feem ntau lub teeb, nrog rau lub hnub.
Xim los yog Mono?
Rau cov ntawv thov uas qhov rhiab heev yog qhov tseem ceeb, lub koob yees duab monochrome muab qhov zoo. Cov ntxaij lim dej uas xav tau rau kev kos duab xim txhais tau tias photons ploj - piv txwv li, pixels uas ntes lub teeb liab tsis tuaj yeem ntes ntsuab photons uas tsaws rau ntawm lawv. Rau cov koob yees duab monochrome, tag nrho cov photons raug kuaj pom. Qhov no muaj qhov rhiab heev ntawm 2x thiab 4x dhau lub koob yees duab xim, nyob ntawm qhov wavelength ntawm photon. Tsis tas li ntawd, cov ntsiab lus zoo tuaj yeem nyuaj rau kev daws teeb meem nrog cov koob yees duab xim, vim tias tsuas yog ¼ ntawm pixels tuaj yeem ntes Liab lossis Xiav lub teeb, qhov kev daws teeb meem zoo ntawm lub koob yees duab raug txo los ntawm 4. Lub teeb ntsuab yog ntes los ntawm ½ ntawm pixels, yog li rhiab heev thiab kev daws teeb meem raug txo los ntawm ib qho ntawm 2.
Cov koob yees duab xim txawm li cas los xij muaj peev xwm tsim cov duab xim sai dua, yooj yim thiab ua tau zoo dua li cov koob yees duab monochrome, uas yuav tsum tau kho vajtse ntxiv thiab ntau cov duab kom tau txais los tsim cov duab xim.
Koj puas xav tau lub koob yees duab xim?
Yog tias qhov teeb pom kev qis qis tseem ceeb hauv koj daim ntawv thov kev yees duab, ces lub koob yees duab monochrome yuav yog qhov kev xaiv zoo tshaj plaws. Yog tias cov ntaub ntawv xim tseem ceeb tshaj qhov rhiab heev, lub koob yees duab xim yuav raug pom zoo.
