Adjusting Image Brightness, Contrast, and Gamma in 2D Images

Brightness

Brightness adjusts the white pixel count in the image, straightening the Transfer function along the top right edge of the Histogram.

To change the brightness, click and drag the brightness slider right to increase brightness, or left to decrease brightness.

Contrast

Contrast adjusts the black and white pixel counts, straightening the Transfer function along the top right and bottom left edges of the Histogram.

To change the contrast, click and drag the contrast slider right to increase contrast, or left to decrease contrast.

Gamma

Gamma adjusts the shape of the Transfer function curve. Increasing gamma darkens the image, decreasing gamma brightens the image.

To change the gamma, click and drag the gamma slider right to increase gamma, or left to decrease gamma.