Graphics Programs Reference
In-Depth Information
9.
In the Photoshop Paths panel, click Shapes to view that path, and then click Circle.
10.
Quit Photoshop. You've finished using it for this lesson.
Using Photoshop paths and alpha channels in InDesign
Now you'll return to InDesign and see how you can create different clipping paths from the
Photoshop paths and alpha channels.
1.
Switch to InDesign. Make sure that the 10_d.psd file is still selected on the page; if
necessary, select it using the Selection tool ( ).
2.
With the hand image still selected, choose Object > Clipping Path > Options to
open the Clipping Path dialog box. If necessary, move the Clipping Path dialog
box so that you can see the image as you work.
3.
Make sure that Preview is selected, and then choose Alpha Channel from the Type
menu. The Alpha menu becomes available, listing the three alpha channels you
saw in Photoshop by the names used in that application.
4.
In the Alpha menu, choose Alpha 1. InDesign creates a clipping path from the al-
pha channel. Then choose Alpha 2 from the same menu, and compare the results.
Tip
You can fine-tune the clipping path that InDesign creates from an alpha
channel by adjusting the Threshold and Tolerance options, as you did in
“
Removing a white background using InDesign
” earlier in this lesson. For
alpha channels, start with a low Threshold value, such as 1.
5.
Choose Alpha 3 from the Alpha menu, and then select the Include Inside Edges
option. Notice the changes in the image.
