By using the command, you can
convert all of the colors on the active layer to corresponding shades
of gray. This differs from converting the image to grayscale in two
respects. First, it only operates on the active layer and second,
the colors on the layer are still RGB values with three components. This
means that you can paint on the layer, or individual parts of it,
using color at a later time.
![[Note]](images/note.png)
|
Note |
|
This command only works on layers of
RGB images. If the image is in
Grayscale or Indexed mode, the menu entry is insensitive and grayed out.
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5.9.1. Activating the Command
You can get to this tools in several ways:
-
In the image menu through
→ → or
→ ,
-
by clicking on the tool icon
in Toolbox, if this tool has been installed there (see
Tools dialog.
Three options are available:
Choose shade of gray based on
-
Lightness
-
The graylevel will be calculated as
-
Luminosity
-
The graylevel will be calculated as
-
Average
-
The graylevel will be calculated as
