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Color Correct

The Color Correct node provides an alternate method to modify the values of a color input. It can be used to manipulate the Hue (H), Saturation (S), or Value (V) components of a color individually, invert the colors and use a curve graph to non-linearly manipulate the value (brightness) component of the input. A mask input also allows the application amount to be controlled with a texture value.

Usage

The Color Correct node is added to the Schematic Viewport using the Add function, found in the pop-up menu under Channel Modifiers > Color > Color Correct. Once added, an RGB color output from another node can be connected to the Color Input of the Color Correct node. The result of the corrections are then sent through the Color output for connecting to another RGB or value input.

NOTE:  For information on working with node graphs, see Schematic Viewport

When the node is selected, attributes appear in the Properties panel.

Correct

Color Correct

Option

Description

Invert

When the Invert option is enabled, the incoming color values are reversed, providing a negative image type of effect.

Hue

The Hue setting allows you to offset the hue (color) component of the incoming RGB color values. Uses an angle input amount offsetting 180° in either direction.

Saturation

The Saturation setting allow you to control the strength component of the colorization, either to increase vividness in a muted input with positive values up to 100%, or to dull overly strong colors with negative values down to -100%.

Value

The Value setting allows you to control the brightness component of the colorization, either to lighten the image with positive values up to 100%, or to darken it with negative values down to -100%.

Color Balance

Option

Description

Color Balance

The Color Balance setting provides you a way to tint the image as a way to remove slight color casts, used to white balance an image. For example when an image has a slight blue coloring, an orange tint can be added (orange being the opposite color from blue) to counteract the blue colorization.

Value Curve

Option

Description

Curve

Using an in-line graph editor, you can modify the value component of the color input in a non-linear fashion. The graph itself represent the brightness range of the color input, from dark values (black) on the left attenuating toward the light values (white) on the right. Middle-clicking on the graph line inserts a key into the graph (or use Ctrl+Alt+click). You can then click and drag to move the line adjust the brightness value at that location, up to increase brightness, and down to decrease. You can add as many keys as necessary to reach the desired results. Graph keys are removed by clicking to select and then pressing the Del key on the keyboard.

Sample

Schematic Node: Color Correct

Option

Description

Color Input

These inputs read RBG values from the output of another node. Input values can be simple RGB values or a texture node, or complex combinations of multiple nodes. The input is modified using the various controls found in the Properties panel.

Mask

The Mask input controls the strength of the Color Correction across the image using an input value. White shows the corrected input fully, attenuating toward black which shows no correction.

Color Output

The Color output field represents the final results of the evaluated color correction.