how should I create ring(circular) shaped structuring element?
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I am working on a project related to malaria detection and severity from infected red blood cells for that i need ring shaped structural element to do morphological operation.
Accepted Answer
Guillaume
on 14 Aug 2017
You can specify any arbitrary neighbourhood matrix to strel. You could generate that ring matrix by subtracting two disk structural elements of different radii, e.g.:
outerradius = 6;
innerradius = 4;
outerdisk = strel('disk', outerradius);
innerdisk = strel('disk', innerradius);
ringmatrix = outerdisk.Neighborhood - padarray(innerdisk.Neighborhood, repmat(outerradius - innerradius, 1, 2));
ringelement = strel(ringmatrix);
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