8.25. Extraire le composant

8.25.1. Généralités

Figure 16.190. Extract Component applied

Extract Component applied

Image d'origine

Extract Component applied

Command « Extract Component » applied with default options.

8.25.2. Appel de la commande

  • You can find this command in the image window menu under ColorsComponentsExtract Component….

8.25.3. Options

Figure 16.191. « Extract Component » command options

Extract Component command options

Presets, Preview, Split view

These options are common to GEGL-based filters. Please refer to Section 2, « Options communes ».


Component to extract. Default is RGB Red: all layer pixels that have the red component in their color will be extracted to create gray pixels; gray pixel value is that of the red channel (e.g a 153;70;17 RGB pixel will give a 153;153;153 gray pixel).


Invert the extracted component.

Linear input

Use linear input instead of gamma corrected.

8.25.4. Using Extract Component

What can we do with that?