find sphere in the range of radius in 3D matrix

Is there any function like imfindcircles(image,[radius1 radius2]) in 3D? I want detect all object like sphere in range of two radius.

Answers (1)

What I'd do is to binarize your image then label it and call regionprops(). Get things like the volume (area), bounding box, surface area (perimeter), etc. and see which of those is close to the values you'd expect for a perfect sphere..

2 Comments

I did this job that you said before. I keep all objects that they have the range of volume. but in my binary matrix remain some objects that they are in the range with different shape. I want to keep just the object that it like a sphere.
Then calculate the surface area and the volume and compute the sphericity. See Wikipedia for the formula: http://en.wikipedia.org/wiki/Sphericity

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Asked:

on 12 Sep 2014

Commented:

on 13 Sep 2014

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