Extracting colour boundary as a simple polyline from bitmap

[laurent_delrieu]

You can use rooster plugin, quite similar to the Vectorize command inside Rhino

If one day you want just the network

Medial Axis from multiple closed curves, middle of double lines

Hey Everyone, i read through many posts and discussions but could not finde a solution to the problem i am facing. With the plugin Rooster i traced the black and white image to curves but now they are all doubled i only want a polyline or simple lines to represent the picture below. [2] I found a method for finding the Medial Axis but the curves resulting from this are to complex: Image Tracing.gh (277.5 KB) [1] I hope you know a different method to simplify the double curves or the Meda…

If you want better smoothing

Simplify Network (Reduce, Rebuild, Smooth), Medial Axis, Image Tracing

Hey everyone, i am looking for a method to transfer a picture of a Network to a clean vectorized Network of Nodes and simple lines connecting this nodes to creat a base i could continue working on with e.g. Heteroptera or Sandbox. After trying out Rooster I got showen a thinning algorithem ( image - Zhang-Suen thinning algorithm C# - Stack Overflow ) which produces like a medial axis trough the black part of the picture but in a realy messy way: [2] [1] after trying countless ideas to redu…

We need to talk about Offset

Hello @Petras_Vestartas Yes it is possible. You can do that Use Clipper Make a small script that takes a polyline and extract arc or line. I did that, and if tolerance for converting polyline to arcs and lines is more than 2 or 3 it works : [image] @visose did show a way to do it, but it is a bit too simple. See Arc Welder