SLiced Photo into a sculpture

I am trying to do this on Rhino 5,
First I resample an image into Black and WHite and then slice “Curve from object” and retrace every slice to include black.I find it very tedious and slow… Can anyone help please.

slice image.3dm (125.9 KB)Nelson Mandela.pdf (105.5 KB)

Well, you could make the halftoning effect in photshop and auto-trace the image in illustrator or whatever, though if the goal is an actual ‘sculpture’ auto-traced curves aren’t very manufacturing-friendly. I could imagine making some sort of script to sample the image and auto-generate the curves, but unless someone has already done that or you want to make many different pictures, you might as well brute-force it.