Prevent two lines from connecting to one point

From this image it is possible to extract center lines

With my Nautilus plugin or

Image Thinner 2
Draw a 1 pixel wide skeleton of an image while retaining the shape and structure of the full image. It uses the Zhang-Suen Thinning Algorithm from third method in image - Zhang-Suen thinning algorithm C# - Stack Overflow

center line.gh (1.7 MB)

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