CorrectBrightness

Adjusts an Image’s brightness, saturation, gamma, contrast, adjust black and white points, etc.

Inputs

Image: Image An input image.

Output

Image Adjusted input image.

Parameters

Brightness:

adding value to the image’s each pixel color value

Saturation:

multiplying by value saturation of the image (Hue, Saturation, Luma notation, see Color Lightness Formula)

Gamma:

raise the image’s each pixel color value to power of 1 / gamma. If set to zero, results in zero or ±infinity values

Contrast:

pushing the image’s pixel color values from the midrange

Gain:

scaling the image’s pixel color values around black, i.e. multiplication by value

Lift:

scaling the image’s pixel color values around white

Low, High:

if changed, rescales the image’s pixel color values in Low and High bounds

Clamp by Low and High:

if set, each value is truncated in Low and High bounds

Predivide and Postmultiply:

if set, before the computation divide the image color channels by it’s alpha channel. After the computation re-multiply them back

Method:

OpenGL: render via OpenGL. Requires OpenGL 2.1 context
CPU: slower computing on CPU

Note

If you compute a project using WrapCmd command line interface or Node on a machine where OpenGL 2.1 is not available, the node will be computed with CPU method anyway.