Hi @anon39580149,
I don’t know of any plugin like that, but if you’re into scripting, it would be pretty straightforward, to come up with a custom component that you input an image into, and that converts - for instance - the black pixels to points. These points could then be sorted by proximity and connected to form a curve.
For a Python example, that shows how to load an image into code, analyse pixels, and other image-related operations, you can check out my Floyd-Steinberg Dithering script, I posted a while back.