how to calculate the radius of an image more irregular if I know the centroid?
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Hello everyone! I have a small question and would appreciate if someone could help me. I'm working with a picture of a mole, I know the centroid of the image, and I'd like to know which is the major radius of the image. Anyone know how to do? thank you very much
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Sean de Wolski
on 9 May 2013
Please provide a link to an example image and the code you are currently using.
Accepted Answer
Image Analyst
on 9 May 2013
Use regionprops and ask for the EquivDiameter. That is the diameter as if the blob were perfectly circular with the same area. See my image segmentation tutorial for more info. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
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Image Analyst
on 11 May 2013
Try bwarea() to get rid of small noise blobs. Otherwise upload your image so I can take a look at it.
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