How to transform a picture into a curve with grasshopper？

[laurent_delrieu]

I have this tool

Medial Axis from multiple closed curves, middle of double lines

Ok here a little code that uses 95 % of code from TAW. This code is doing thinning of an image https://homepages.inf.ed.ac.uk/rbf/HIPR2/thin.htm [image] [image] You must have a good black and white image. If not … [image] image_thinner_LEGACY.gh (7.2 KB)

But the image is low quality, it is better if you make yourself the drainage, you’ll have better results.