10.34.  Subtract Mask Layer from Selection

This command substracts from the selection image pixels corresponding to pixels with opacity more than 0% in the layer mask. White pixels (100% opaque) in layer mask will give pixels fully substracted from the selection. Grayscaled pixels (1% to 99% opaque) will give a feathered selection. Black pixels (0% opaque) will not be substracted. Substracted pixels are not removed: they are not included in the selection. The layer mask is not modified by this command.

Figure 10.76.  Illustration of Substract layer mask from Selection

Illustration of Substract layer mask from Selection

From left to right: original image with a selection, layer dialog with a layer mask created with the “Layer's alpha channel” option, after “Substract Layer Mask from selection”.


10.34.1.  Activate Dialog

  • These commands can be accessed from an image menubar as LayerMaskSubtract from Selection,

  • or from the pop-menu you get by right clicking on the active layer in Layer Dialog.