Adobe photoshop cs2 사용자 설명서
ADOBE PHOTOSHOP CS2
User Guide
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To switch temporarily to the other lasso tools, do one of the following:
•
To activate the Lasso tool, hold down Alt (Windows) or Option (Mac OS), and drag with the mouse button
depressed.
depressed.
•
To activate the Polygonal Lasso tool, hold down Alt (Windows) or Option (Mac OS), and click.
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To erase recently drawn segments and fastening points, press the Delete key until you’ve erased the fastening
points for the desired segment.
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Close the selection border:
•
To close the border with a freehand Magnetic segment, double-click, or press Enter or Return.
•
To close the border with a straight segment, hold down Alt (Windows) or Option (Mac OS), and double-click.
•
To close the border, drag back over the starting point and click.
To set options for the Lasso, Polygonal Lasso, and Magnetic Lasso tools
The Lasso tool options let you customize how the different lasso tools detect and select edges.
1
If needed, select the tool.
2
Specify one of the selection options in the options bar.
Selection options
A. New
A. New
B. Add To
C. Subtract From
D. Intersect With
3
Specify feather and anti-aliasing options.
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(Photoshop) For the Magnetic Lasso tool, set any of these options:
Width
To specify a detection width, enter a pixel value for Width. The Magnetic Lasso tool detects edges only within
the specified distance from the pointer.
To change the lasso pointer so that it indicates the lasso width, press the Caps Lock key. Change the pointer while the
tool is selected but not in use.
tool is selected but not in use.
Edge Contrast
To specify the lasso’s sensitivity to edges in the image, enter a value between 1% and 100% for Edge
Contrast. A higher value detects only edges that contrast sharply with their surroundings; a lower value detects
lower-contrast edges.
lower-contrast edges.
Frequency
To specify the rate at which the lasso sets fastening points, enter a value between 0 and 100 for
Frequency. A higher value anchors the selection border in place more quickly.
On an image with well-defined edges, try a higher width and higher edge contrast, and trace the border roughly. On
an image with softer edges, try a lower width and lower edge contrast, and trace the border more precisely.
an image with softer edges, try a lower width and lower edge contrast, and trace the border more precisely.
Stylus Pressure
If you are working with a stylus tablet, select or deselect the Stylus Pressure option. When the
option is selected, an increase in stylus pressure decreases the edge width.
While creating a selection, press the right bracket (]) to increase the Magnetic Lasso edge width by 1 pixel; press the
left bracket ([) to decrease the width by 1 pixel.
left bracket ([) to decrease the width by 1 pixel.
A
B
C D