This command allows you to extract one specific color component from the current layer. This will be represented as a grayscale layer. It is similar to Decompose, except that it extracts only one component and the effect is performed on the current layer instead of creating a new image.
“Presets” are a common feature for several Colors commands. You can find its description in Sección 8.1.1, “Características comunes de los colores”.
Componente que extraer. Lo predeterminado es rojo RGB: todos los píxeles de la capa que tienen un componente rojo en su color se extraerán para crear píxeles grises; el valor del píxel gris es el del canal rojo (ej. un píxel RGB 153;70;17 dará un píxel gris 153;153;153).
Invert all pixel values of the extracted component.
Use linear output instead of gamma corrected.
These are common features described in Sección 8.1.1, “Características comunes de los colores”.