2.8.  Foreground Select

Revision History
Revision $Revision: 2429 $ 2007-07-26 j.h

This tool lets you extract the foreground from the active layer or from a selection. It is based on the SIOX method (Simple Interactive Object Extraction). You can visit its Web page at [SIOX].

The creation of a selection with this tool works in a couple of steps:

[Note] Note

Until you press Enter, you can't undo this selection by Ctrl-Z nor by Select->None, and the Undo History is not concerned. To delete this selection, you must select another tool.

You can get the option dialog by double-clicking on the tool icon in the toolbox:

Mode; Antialias; Feather edges
[Note] Note

See Selection Tools for help with options that are common to all these tools. Only options that are specific to this tool are explained here.

Contiguous

If this option is enabled, only the area contiguous to the stroke will be selected. Otherwise all the areas with same colors will be selected.

Interactive refinement

Here are some options to work more precisely on your selection:

Mark foreground

default option. The foreground color of the Toolbox is used to paint. Colors covered by the painted line will be used for extraction.

Mark background

You can access this option either by clicking on the radio button or, more simply, by pressing the Ctrl key. The mouse pointer goes with a small eraser icon. The used color is the background color of Toolbox. The pixels of the selection which have the same color as the “erased” pixels will NOT be extracted.

Small brush / Large brush

This slider lets you adapt the size of the brush used to paint the line. A small brush fits well thin details.

Smoothing

The slider lets you remove small holes in your selection.

Preview color

You can select between Red, Green and Blue to mask the image background.

Color Sensitivity

This option uses the L*a*b color model. If your image contains many pixels of the same color in different tones, you can increase the sensibility of the selection for this color.