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
Canvas 8 Help: Scanning, sizing, and tracing images (14 of 18)                                      Page #646