How do I get the fork points of a skeleton of an image?
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Soumyajit Pal
on 24 Feb 2016
Commented: Soumyajit Pal
on 21 Mar 2016
I want to find the fork points of a skeleton of an image. I have obtained the skeleton of the image using the bwmorph(binaryImage, 'skel', Inf) function.
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Guillaume
on 24 Feb 2016
How about?
skelimage = bwmorph(binaryImage, 'skel', Inf);
branchimage = bwmorph(skelimage, 'branchpoints');
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Guillaume
on 21 Mar 2016
"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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