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

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Soumyajit Pal 2016-2-24

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https://ww2.mathworks.cn/matlabcentral/answers/269768-how-do-i-get-the-fork-points-of-a-skeleton-of-an-image

评论： Soumyajit Pal 2016-3-21

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 2016-2-24

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How about?

skelimage = bwmorph(binaryImage, 'skel', Inf);
branchimage = bwmorph(skelimage, 'branchpoints');

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Guillaume 2016-3-21

在 MATLAB Online 中打开

"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