Compound Channel Selection

Creates a selection based on a color channel in the current layer or in any operator in the workspace.

Channel list

Determines the channel to select.

Feather

Softens the edge of the selection.

Expand

Increases the size of the selection by the specified number of pixels.

Selection list

Determines how the selection is added to other selections.

Invert

Selects the portion of the image outside the selection.

Layer

Selects the operator whose color channel you want to use as a source for this selection.