How do I get the fork points of a skeleton of an image?

Soumyajit Pal asked: 2024-02-06 skeletonization , fork , fork points , branch points

Learn how to identify fork points in image skeletons using MATLAB! Our tutorial provides step-by-step guidance to extract skeleton branch points. Get started no

Expert Answer

John Michell answered . 2025-07-18 08:02:22

"A skeleton point having more than two adjacent points is called a fork point": bwmorph calls this a branch point.

"Every point which is not an endpoint or fork point": these are just a normal segment point. It does not have a particular name, and I don't see why you'd call them branch point. If you want to obtain these, it's just the skeleton point minus the end and branch points:

skelimage = bwmorph(binaryImage, 'skel', Inf);
branchimage = bwmorph(skelimage, 'branchpoints'); %branch (fork) points
endimage = bwmorph(skelimage, 'endpoints'); %end points
otherimage = skelimage - branchimage - endimage; %points other than branch and end

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