David Karlins - Adobe Illustrator CC For Dummies

1 With the Image Trace panel displayed (choose Window ⇒ Image Trace if it's not selected), select the raster object to be traced.

2 Select the Preview check box in the Image Trace panel.You'll need to experiment with different settings to find the ones that produce the optimal trace, so you'll want to preview the effect of your settings before launching trace.You can undo a trace and start over again, but try to avoid that. Tracing takes significant time, and it's more efficient to preview the result of a trace before applying it.

3 Experiment with trace settings: Choose one of the intuitively named presets from the Preset drop-down list, shown in Figure 3-11 . FIGURE 3-11:Image Trace presets are intuitively named for different types of artwork. Continue choosing presets until you find one that produces something close to your desired result. Use that preset's options to tweak the trace settings by previewing the result. The options are specific to the type of preset you selected. For example, if you choose a color preset, you can edit how many colors will be generated, as shown in Figure 3-12. FIGURE 3-12:Customizing and previewing trace settings in the Image Trace panel.

4 When you achieve the result you want, deselect the Preview check box and then click the Trace button in the Image Trace panel.You can continue to change trace settings after turning off Preview, and you can toggle back into Preview at any time by selecting the Preview check box.The Trace button becomes active (not dimmed) when you deselect Preview. Illustrator may warn you that the process will take some time.

5 Choose Object ⇒ Expand to convert the traced object to paths and to make it possible to edit the vector artwork produced by the trace.Alternately, you can click the Expand button in the Control or Properties panel.The result is a set of paths, all ready to edit, as shown in Figure 3-13.

FIGURE 3-13:Editing a traced image.

Image tracing is an inexact science. Illustrator has to guess at how to convert a sea of dots into coherent vectors, and the results are never perfect. Expect to put in some time with editing tools (such as the Pen tool, the Anchor Point tool, and the Direct Selection tool) and other techniques to put the finishing touches on the vector graphics produced by your traced artwork.

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