supremum of openings by set of linear structuring elements

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I want to extract elongated structures with using angle of rotation like r=[15....90;-15...-90] so that supremum of opening consists of set of lines.
so how i should proceed
  2 Commenti
Image Analyst
Image Analyst il 24 Lug 2014
First you should attach your images so we can see if imopen() is the best approach to get your elongated structures. I mean, why not just threshold and call regionprops to get the orientations (angles)? I don't know because you did not attach your image.
rky
rky il 25 Lug 2014
Basically i want to extract blood vessels from my retinal images

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Image Analyst
Image Analyst il 26 Lug 2014
  3 Commenti
Image Analyst
Image Analyst il 28 Lug 2014
Define supremum. Do you just mean the max? Why not just do
openedImage = imopen(originalImage,se);
if i == 0
resultImage = openedImage;
else
resultImage = max(resultImage, openedImage);
end
rky
rky il 30 Lug 2014
if i want angle of rotation i = [15....90;-15...-90] and also [105...180;195...270] how i should do .

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