how can i extract radius signature of a binary image?
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i have a binary image and radius signature is distance between pixels on contour of object and its centroid. i use bwboundaries() but result is not good
i saw a example in matlab code of bwboundaries(),it used plot to show contour plot has best result but i dont need plot i need a matrix. i use blow code but my result is not same with matlab's example.
img4=zeros(size(img3));
[B,L] = bwboundaries(img3,'noholes');
for k = 1:length(B)
boundary = B{k};
for i=1:size(boundary,1)
img4(boundary(i,1), boundary(i,2))=1;
end
end
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Answers (3)
Image Analyst
on 26 Aug 2013
Edited: Image Analyst
on 26 Aug 2013
Use regionprops to find the centroid, then use the Pythagorean theorem to get the distances between the boundary x,y coordinates and the centroid.
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Sabanam
on 25 Feb 2014
Thanks sir...its really helpful and the best answer to find radius signature...
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