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Chapter 4. Creating and Editing Paths > Illustrator’s Auto Trace Tool

Illustrator’s Auto Trace Tool

Although no substitute for a dedicated tracing program such as Adobe’s Streamline, the Auto Trace tool can do an adequate job of creating vector outlines of bitmap (raster) images. The tool has only two options, Auto Trace Tolerance and Gap, which you set in Illustrator’s preferences. The Tolerance setting establishes how close the tool must be to an edge in the image being traced, and the Gap setting tells the tool which breaks in an edge to ignore. Figure 4.39 shows the Auto Trace tool’s preferences, as well as a likely candidate for a successful trace.

Figure 4.39. The Auto Trace tool performs best on uniformly colored objects against a contrasting background.



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