What is GAMMA ???????

"Gamma coreection" is the name to call of a nonlinear operation used to code and decode luminance or tristimulus values in video or still image systems. "Gamma coreection" in a simplest case, is:




in this: in; out are non-negative real value, range such as 0 to 1. Gamma value or

See below img:


With Log funtion, the used to graph when talk about Gamma:


and a value: 2.2


Summary. Gamma correction used to talk about a img, which you want display a real img into CRT monitor, in this case, little different.