How can I get “thinner” graph for my coordinate system?

Question

Following up with this, I have a bunch of coordinates and I draw them on a bitmap image as a coordinate system. Now, I would like to get rid of all the noise, and filter coordin

Answer 1

You are looking for an operation called thinning or skeletonization, possibly followed by some post-processing to remove small components. There are different algorithms for this that offer different properties. For example Guo and Hall's and Zhang and Suen's.