two lines skeletonization

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priscilla
priscilla 2011-6-15
Hai, I am trying to get a nice skeleton, plotted as one line. After the use of ‘skel’ of the function bwmorph I get a nicely one pixel line. But drawing a line through these pixels with: [B,L] = bwboundaries(image); for k=1:length(B) b = B{k}; plot(b(:,2),b(:,1),'g','LineWidth',1); end
, I get at some points two lines, showed over here http://dl.dropbox.com/u/13969758/skeleton.tif . Has someone a solution to remove these extra formed lines between two skew pixels?
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Image Analyst
Image Analyst 2011-6-15
Why are you using bwboundaries??? The skeleton is already the coordinates of the line location. Call find() on the binary skeleton image if you want a list of (x,y) coordinates, but I wouldn't necessarily to that - it depends on what you want to accomplish by this plotting of the line (again). No need to call bwboundaries at all. So that totally gets rid of your problem.

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priscilla
priscilla 2011-7-13
just again skeletonization gives the solution.

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Sean de Wolski
Sean de Wolski 2011-6-15
Perhaps you could just change the connectivity for bwboundaries?
Could you please post the (small) matrix that yielded the above result.
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priscilla
priscilla 2011-6-15
Hai,
With 4 connectivity, you just get points, see over here:
http://dl.dropbox.com/u/13969758/skeleton_2.tif
By making a line between these points again it gives the same result as before (two lines).

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