1
Choose Canvas > Preferences (Mac) or File > Preferences
(Mac). Select the Painting tab in the Preferences dialog box.
2
Select an option under Interpolation and click OK. For more
information, see Painting preferences on page 15.224.
Auto-tracing images
You can use the Auto Trace command to create vector objects from
an image. The Auto Trace command traces any channel of an image
and is available when a paint object is selected (not in edit mode).
Auto-tracing is much faster than tracing an image by hand with the
Polygon or Curve tool, although you might need to edit the resulting
vector paths.
When Canvas auto-traces a channel, it leaves the original image
unchanged. Canvas applies the current stroke to the resulting vector
objects. When the tracing is complete, you can move the vector
objects away from the image.
Tip
For Mac OS 9, choose File >
Preferences to access the Pref-
erences dialog box.
Tip
Canvas auto-traces high-reso-
lution images better than low-
resolution images. Auto-tracing
an image with a resolution low-
er than 300 ppi can produce
jagged paths.
Auto-tracing images
Canvas traces an image with
curves or straight path seg-
ments. Auto-tracing usually pro-
duces several paths that follow
various sections of the image.
After tracing, you can group
and edit the resulting paths.
Original scan at 600 ppi resolution
Paths created with the Auto Trace command
Selection handles
(highlighted) surround
the objects produced
by auto-tracing the
sailboat image