22/02/25Umlinganiselo wesakhelo sekhamera sisantya apho izakhelo zinokufunyanwa yikhamera. Isantya esiphezulu sekhamera siyimfuneko ekuthatheni utshintsho kwizifundo ze-imaging eziguquguqukayo, kunye nokuvumela ukuhanjiswa kwedatha ephezulu. Nangona, oku kuphuma kuphezulu kuza kunye necala elisezantsi ledatha enkulu eveliswa yikhamera. Oku kunokugqiba uhlobo lojongano olusetyenziswayo phakathi kwekhamera kunye nekhompyuter, kunye nokuba kungakanani ukugcinwa kwedatha kunye nokusebenza okufunekayo. Kwezinye iimeko, ireyithi yesakhelo inokuthintelwa yireyithi yedatha yojongano olusetyenzisiweyo.
Kwiikhamera ezininzi ze-CMOS, umlinganiselo wesakhelo umiselwa linani lemigca yepixel esebenzayo ekufumaneni, enokuncitshiswa ngokusebenzisa ummandla womdla (ROI). Ngokwesiqhelo, umphakamo we-ROI esetyenzisiweyo kunye nowona mlinganiselo uphezulu wesakhelo ulungelelaniswa ngokuphambanayo-ukunciphisa inani lemiqolo yepixel esetyenzisiweyo kuphinda-phinda umlinganiselo wesakhelo sekhamera - nangona oku kungasoloko kunjalo.
Ezinye iikhamera zineendlela ezininzi 'zokufunda', ezivumela urhwebo ukuba lwenziwe ekucutheni uluhlu oluguquguqukayo, kutshintshiselwano lwamaxabiso aphezulu esakhelo. Umzekelo, iikhamera zenzululwazi zihlala zine-16-bit yemowudi ethi 'High Dynamic Range', enoluhlu oluguquguqukayo olukhulu olunikezela ukufikelela kuzo zombini ingxolo ephantsi yokufunda kunye nomthamo omkhulu ogcweleyo. Kwakhona inokuba yi-12-bit ye-'Standard' okanye 'Speed' imowudi, enikezela ngokuphindwe kabini kwireyithi yesakhelo, kutshintshiselwano loluhlu oluncitshisiweyo oluguquguqukayo, mhlawumbi ngokunciphisa umthamo ogcweleyo womfanekiso wokukhanya okuphantsi, okanye ingxolo eyandisiweyo yokufunda kwizicelo zokukhanya okuphezulu apho oku kungeyongxaki.
