Operation Manual

Tracing bitmaps and editing traced results | 549
Removing and preserving the background
You can choose to remove or preserve the background in the traced result. With the Outline Trace method, you can also specify the
background color to be removed. If the background color around the edges is removed but some background color still shows through
some areas of the image, you can remove the background from the entire image.
Setting other Outline Trace options
By default, object areas that are hidden from view by overlapping objects are removed from the traced result. You can choose to keep the
underlying object areas. This feature is useful for traced results that will be output to vinyl cutters and screen printers.
To reduce the number of objects in the traced result, you can combine adjacent objects of the same color. You can also group objects of the
same color so that you can manipulate them more easily in Corel DESIGNER.
Undoing and redoing actions
You can adjust the settings in PowerTRACE and retrace a bitmap as many times as necessary until you are satisfied with the result. If you
make a mistake, you can undo or redo an action, or you can revert to the first traced result.
To fine-tune traced results
1 Select a bitmap.
2 Do one of the following:
•
Click Bitmaps Centerline trace, and click a command.
•
Click Bitmaps Outline trace, and click a command.
3 On the Settings page, move any of the following sliders:
• Detail — lets you control the amount of original detail that is preserved in the traced result. Higher values maintain more detail and
result in a greater number of objects and colors; lower values discard some detail and result in fewer objects.
• Smoothing — lets you smooth curved lines and control the number of nodes in the traced result. Higher values result in fewer nodes
and produce curves that do not closely follow the lines in the source bitmap. Lower values result in more nodes and produce more
accurate trace results.
• Corner smoothness — This slider works in conjunction with the Smoothing slider and lets you control the appearance of corners.
Lower values maintain the appearance of corners; higher values smooth corners.

You can also 
Change the tracing method Choose a method from the Trace type list box.
Change the preset style Choose a preset style from the Type of image list box.
Keep the source bitmap after a trace In the Options area, disable the Delete original image check box.
Discard or preserve the background in the traced result Enable or disable the Remove background check box.
Specify the background color you want to remove (Outline Trace)
Enable the Specify color option, click the Eyedropper tool ,
and click a color in the preview window. To specify an additional
background color to remove, hold down Shift, and click a color in
the preview window.
The last specified color is displayed next to the Eyedropper tool.