RasterFlow
Color

Color to Alpha

gegl:color-to-alpha
Convert a specified color to transparency, works best with white.
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Operation pads

This operation exposes the following data pads, defining how it receives, processes, and emits image data:

Input
Output

Operation properties

Color
GeglColor
The color to make transparent.
Default ``
Transparency threshold
gdouble
The limit below which colors become transparent.
Default 0.00
Value range 0.00 • • 1.00.
Opacity threshold
gdouble
The limit above which colors remain opaque.
Default 1.00
Value range 0.00 • • 1.00.

Color Temperature

Change the color temperature of the image, from an assumed original color temperature to an intended one.

Color warp

Warps the colors of an image between colors with weighted distortion factors, color pairs which are black to black get ignored when constructing the mapping.