find sphere in the range of radius in 3D matrix

조회 수: 3 (최근 30일)
Erfaneh
Erfaneh 2014년 9월 12일
댓글: Image Analyst 2014년 9월 13일
Is there any function like imfindcircles(image,[radius1 radius2]) in 3D? I want detect all object like sphere in range of two radius.

답변 (1개)

Image Analyst
Image Analyst 2014년 9월 12일
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..
  댓글 수: 2
Erfaneh
Erfaneh 2014년 9월 12일
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.
Image Analyst
Image Analyst 2014년 9월 13일
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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