I did something like that once by using the spline tool and tracing down the center of each grooved area and then assigning the bit.
Import the image in and trace it just like Dale mentioned.
RingNeckBlues
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All patterns and projects that I share on the CarveWright forum are for your personal carving purpose. They are not to be shared, sold or posted on any other web site without permission from RingNeckBlues Designs.
Just in case you have problems with the pattern, here is a raster version.