Chithunzi cha chithunzi cha CMOS ndi mtundu wa makina ojambula zithunzi mkati mwa makamera ena a digito, omwe ali ndi dera lophatikizana lomwe limalemba chithunzi. Mutha kuganiza za chithunzi cha zithunzi ngati chofanana ndi kanema mu kanema yakale ya kanema.
Chojambulira cha metal-oxide semiconductor (CMOS) chimakhala ndi mamiliyoni ambiri opanga pixel , omwe ali ndi photodetector. Pamene kuwala kulowera kamera kupyolera mu lens, imayambitsa chithunzithunzi cha CMOS, chomwe chimapangitsa aliyense photodetector kuti apeze magetsi pogwiritsa ntchito kuchuluka kwa kuwala kumene kumayambitsa. Kamera ya digito imasintha malingalirowo ku kuwerenga kwa digito, komwe kumapangitsa mphamvu ya kuwala kumayesedwa pa photodetector iliyonse, komanso mtundu. Mapulogalamu omwe amagwiritsidwa ntchito kusonyeza zithunzi amasintha zomwe zimawerengedwera pamaphikseli omwe amapanga chithunzicho atasonyezedwa palimodzi.
CMOS Vs. CCD
CMOS imagwiritsa ntchito teknoloji yosiyana yochokera ku CCD, yomwe ili mtundu wina wa chithunzi chomwe chimapezeka mu makamera a digito. Makamera ambiri a digito amagwiritsa ntchito makanema a CMOS kuposa CCD, chifukwa masenema a CMOS amagwiritsa ntchito mphamvu zochepa ndipo angathe kutumiza deta mofulumira kuposa CCD. Masensa a Chithunzi cha CMOS amachititsa ndalama zambiri kuposa CCD.
M'masiku oyambirira a makamera adijito, mabatire anali akuluakulu chifukwa makamera anali akuluakulu, kotero kuti mphamvu yapamwamba ya CCD inalibe nkhawa. Koma monga makamera a digito adakwera kukula, akufunikira mabatire ang'onoang'ono, CMOS inakhala njira yabwino.
Ndipo monga zithunzithunzi zazithunzi zawona zikuwonjezeka mobwerezabwereza mu chiwerengero cha ma pixelini, izo zimatha mphamvu ya chithunzi cha CMOS kusuntha deta mofulumira pa chip ndi zigawo zina za kamera ndi CCD zakhala zothandiza kwambiri.
Ubwino wa CMOS
Mbali imodzi yomwe CMOS imakhala nayo yopambana pa matekinoloje ena ojambula zithunzi ndi ntchito yomwe imatha kuchita pa chip, osati kutumiza deta ya chithunzi pa firmware ya piritsi kapena pulogalamu ya ntchito zina. Mwachitsanzo, chithunzithunzi cha CMOS chingachititse kuchepetsa kutulutsa phokoso pa chip, chomwe chimapulumutsa nthawi yosuntha dera mkati mwa kamera. Chojambula chajambula cha CMOS chidzapangitsanso analog kumasinthidwe a digito pa chip, chinachake cha CCD chithunzi sitingathe kuchita. Makamera ena adzachita ntchito yopanga autofocus pa chithunzi cha CMOS chithunzi, chomwe chimakonzanso kayendedwe kamodzi ka kamera.
Kupititsa patsogolo Zopititsa patsogolo mu CMOS
Monga opanga makamera asamukira zambiri ku makina a CMOS opanga mafano a makamera, kafukufuku wambiri wapita ku luso lamakono, zomwe zimabweretsa kusintha kwakukulu. Mwachitsanzo, pamene magetsi a zithunzi za CCD amagwiritsidwa ntchito kukhala otchipa kusiyana ndi CMOS kupanga, kufufuza kwowonjezera kumagwiritsa ntchito masensa a chithunzi cha CMOS walola mtengo wa CMOS kupitiriza kusiya.
Mbali imodzi yomwe kugogomezera kwafukufukuyu kwapindulitsa kwa CMOS kuli kachipangizo chapafupi. Masenema a Zithunzi za CMOS akupitiriza kusonyeza kuti ali ndi luso lotha kujambula zithunzi ndi zotsatira zabwino mwa kujambula zithunzi zochepa. Kutha kuchepetsa phokoso kwa CMOS kwakula mofulumira m'zaka zaposachedwapa, kupititsa patsogolo luso la chithunzi cha CMOS chojambula kuti chizichita bwino poyera.
Kusintha kwaposachedwa kwa CMOS kunali kuyambitsidwa kwa teknoloji yamakono yowonetsera zithunzi, kumene mawaya omwe amasuntha dera kuchoka ku chithunzi chajambula kupita ku kamera anasunthidwa kuchoka kutsogolo kwa chithunzi chajambula - kumene anatsegula kuwala kwina kumene kumayambitsa khungu - - kumbuyo, kupanga chojambula chajambula cha CMOS chokhoza kuchita bwino kwambiri, pamene kusungira chipangizochi kukutha kusuntha deta pamtunda wothamanga motsutsana ndi masensa a zithunzi za CCD.