Operation Manual

Tracing bitmaps and editing traced results | 553
To set default tracing options
1
Click Tools Options.
2 In the Workspace list of categories, click PowerTRACE.
3 Perform any of the following tasks.
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To Do the following
Choose a Quick Trace method From the Quick Trace method list box, choose a preset style or the
most recently used settings.
Determine performance level and quality of a traced result Move the Performance slider to the left to increase performance,
or to the right to increase the quality of the traced results. The
lowest value prompts you to downsample all bitmaps that exceed
1 megapixel. The highest value prompts you to downsample all
bitmaps that exceed 5 megapixels.
Choose how to merge colors in a traced result In the Merge colors area, enable an option. The Average merging
colors option replaces the colors to be merged with a color of their
average value. The Merge to first color selected option replaces
the colors to be merged with the first selected color.
You can also access the PowerTRACE page in the Options dialog box by clicking Options in PowerTRACE.
Tips for tracing bitmaps and editing traced results
The following tips can help you achieve high-quality trace results.
• Use high-quality source bitmaps. If dithering or JPEG compression was used in the source bitmap, the bitmap may contain additional
noise. For best traced results, remove the noise before tracing the bitmap.
• For best results when you use the Centerline Trace method, convert the bitmap to the black-and-white color mode before tracing. Note
that in this case you cannot adjust detail.
• When tracing technical illustrations and sketches with faint lines, you can improve the results by applying the Find edges special effect to
the source bitmap. To do this, click Bitmaps Contour Find edges.
• For outline tracing, reduce the color depth of the bitmap by changing the color mode, and then adjust the color and contrast.
• You can adjust the traced results at any time, including during a trace, by changing the PowerTRACE settings.
•
To trace a specific area in a bitmap, use the Shape tool to define the area before clicking Bitmaps Trace bitmap.
• If important detail has been removed from the traced results, you can disable the Remove background check box on the Settings page
of PowerTRACE. You can also try enabling the Specify color option on the Settings page and sampling the color you want to specify as a
background color.
• If background color is removed around the edges but remains within image areas, enable the Remove from entire image check box.
• If too many colors or details are lost, move the Detail slider on the Settings page.
• To preserve detail in bitmaps that have fine details, thin lines, and no anti-aliasing applied, choose Line art from the Type of image list
box on the Settings page.