igamma

correction

out = igamma(im, 'sRGB') is a gamma decoded version of im using the sRGB decoding function (JPEG images sRGB encoded).

Notes

Gamma encoding is typically performed in a camera with GAMMA=0.45.
Gamma decoding is typically performed in the display with GAMMA=2.2.
For images with multiple planes the gamma correction is applied to all planes.
For images of type double the pixels are assumed to be in the range 0 to 1.
For images of type int the pixels are assumed in the range 0 to max integer value.