Are you just looking to extrude and outline of an image. Insert sketch picture and start tracing. Adobe Illustrator in combination with raster to vector program like what CBL pointed to is not bad either.
This Artcam program creates a polygon mesh in kind of like a bass relief of an image file through a simple guided process
The problem with many raster to vector converters is that the original line work (...design) gets butchered hard 9.999 times out of 10. It's best to insert it as a sketch picture and make clean line work over it in Solidworks.
I have fooled with many of them from adobe streamline, one's built into 7,000 vinyl cutting software, and other cheesy freeware ones. They all suck. When I used to cut vinyl signs, I would just make clean work in illustrator. If i were to do it again, Id do it in solidworks to assure that everything is tangent and clean.
Thanks to all, I have done the old insert picture outline routine and messed around with vector programs. I was just curious to see if a third party had created anything for solidworks yet. Here is an example that Mastercam has