To allow the Contour Cut effect to trace the outline of objects in a bitmap, make the background of the image transparent using the Make Transparent function. Otherwise, the effect will only trace the outside of the bitmap.
Opaque Background
Transparent Background
See Also
Using Contour Cut
Creating a Contour Cut or Cuts around Objects
Adjusting Contour Cut Using DesignCentral
Adjusting Contour Cut Using Control Points
Transforming Objects into a Cutting Line