Recently, I've had an object to get it's skeleton,and then simplified the skeleton
but my problem is how to remove the edge of the skeleton for simplified the skeleton
here is my few steps:
First,I've got the skeleton from my object with bwmorph(ima,'skel',Inf)
here is the object which has been filled and the skeleton below:
filling the object:
Second,for the skeleton, I've mark the branch points and end points
to mark the branch points and end points,I use bwmorph(skel, 'branchpoints') and
here is the figure that I marked the points below:
the reds are branch points
the blues are end points
and the last step,
from the above figure, I want to remove the edges between branch point and end point (here I call the edge is spurious edge)
here is the resulting figure that I want
my problem is how can I remove the spurious edges
I've referenced this article
and the suggestions are set the threshold of the distance
but in my situation,the lengths of the spurious edges may have too long or too short...
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I think there must be a more efficient way to do it, but this at least works. BWDISTGEODESIC starts at a given point, and then calculates the distance as you travel along the path. Start at a endpoint, start walking and find all pixels that are closer than the nearest branchpoint. Then remove those pixels.
B = bwmorph(skel, 'branchpoints'); E = bwmorph(skel, 'endpoints');
[y,x] = find(E); B_loc = find(B);
Dmask = false(size(skel)); for k = 1:numel(x) D = bwdistgeodesic(skel,x(k),y(k)); distanceToBranchPt = min(D(B_loc)); Dmask(D < distanceToBranchPt) =true; end skelD = skel - Dmask; imshow(skelD); hold all; [y,x] = find(B); plot(x,y,'ro')