Graphics Programs Reference
In-Depth Information
Selection options for Lasso tools
When using the Lasso tools, you have several options available in
the Options bar to improve or alter your selection. These modifiers
are very similar to those for the Marquee tools, so I'll just briefly
mention them.
A B C D
E
F
G
The first four icons specify the kind of selection:
A
New selection
B
Add to selection
C
Subtract from selection
D
intersect with selection
The next three options create a smoother selection:
E
Feather. This option creates a softer edge on your selection.
F
Anti-alias. This creates a smoother edge for curved lines.
G
Refine edge. This button brings up a window with several
sliders to adjust an active selection with intuitive controls.
Magnetic Lasso options
The Magnetic Lasso has a few additional options that mainly deal
with its snapping behavior. You can change the following proper-
ties in the Options bar:
•
Width. The width specifies how wide an area the Magnetic
Lasso looks at when trying to detect edges. To see the width
visually, activate the Caps Lock key before making a selection.
•
edge Contrast. This value determines the lasso's sensitivity to
edges in the image. Higher values detect high-contrast edges,
whereas lower values detect lower-contrast edges. On an image
with well-defined edges, you should use a higher width and
edge contrast setting.
