Overview
This node uses a curve to remap the values of the input image's pixels. Each of the input's channels (red, green, blue, transparency) is handled independently of the others.
The x-axis of the curve represents input values, and the y-axis represents outputs. If
the above curve were used, then for a pixel that had a channel of brightness 75%, the
corresponding pixel-channel in the output image would have a brightness of 95%.
If the curve is a standard upward ramp, then the image will remain unchanged.
If the ramp is inverted, the image's colors will also be inverted.
A step-curve will give the tonal variations of the image a step-like appearance.
Inputs
This node takes one input providing the image to be adjusted.
Properties
Property |
Description |
Tone Curve |
Specifies the curve used to remap the input image. Clicking this property's "Edit..." button will open the Edit Curve dialog. |
Affect Red |
Dictates whether or not the input's red channel will be changed in any way. |
Affect Green |
Whether or not the input's green channel will be changed. |
Affect Blue |
Whether or not the input's blue channel will be changed. |
Affect Transparency |
Whether or not the input's transparency channel will be changed. |