MATLAB Answers

volume enclosed by isosurface

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William
William on 1 Dec 2014
Commented: Uwe22 on 16 Jun 2017
How can I calculate the volume enclosed by an isosurface, in this case my isosufaces are generally irregular cylinders.
I've attached an image to give you and idea of the tubes (although its not a great one!)
Convex hull method over estimates due to its curvature, but could possibly work for small segments and summation over the whole tube. However, there must be a simpler way!?
Many thanks, Will

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Accepted Answer

William
William on 21 Dec 2014
Cleaned up image and counted the data points which represent voxels (of known value)..... easy

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More Answers (1)

William von Witt
William von Witt on 4 Jul 2015
Hey William,
I am just doing the same thing, was that as much as you did? I want an area/volume ratio for my isosurfaces, doesn't seem to be any nice algorithm for calculating volume. I will try your method and just multiply that by the voxel size I guess, see how that works out.
thanks,
William

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Uwe22
Uwe22 on 16 Jun 2017
Hej William,
May I ask you got success previously in getting volume of the isosurfaces? Thanks

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