Mike, I have Rams trace. It has the ability to auto trace and then hide the picture and clean up the lines. You can reduce the number points, move the center points of arc's. You can click on any point and just drag it. I do some relief cut signs with oriental characters. I used to use AutoCAD and it would take hours per character. Rams trace auto traces in seconds and I can clean it up in minutes not hours.
You can download a demo at www.rams3d.com but you can't save the files in the demo version. If you want to send me a high rez picture of your pattern, I will try it and tell you how long it took.