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How to find elements of a 3d matrix inside a volume

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Ashli
Ashli on 10 Apr 2013
Hi all, Does anyone has any idea how can I find the elements of a 3d matrix located inside a volume defined by boundary faces? any comment is appreciated,

Answers (2)

Sean de Wolski
Sean de Wolski on 10 Apr 2013
Edited: Sean de Wolski on 19 Sep 2013
Hi Ashli,
This utility will "voxelise" your mesh. Then you can use that image as a logical index into your 3d image:
Also, on the off chance that all of your objects are convex, then there is an approach to this with vert2con() on the FEX that will quickly allow you to identify whether a voxel is inside the vertices.
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Johannes Korsawe
Johannes Korsawe on 19 Sep 2013
If your volume is tesselated with triangles and watertight, you might be able to use intriangulation from the FEX.
Regards, Johannes

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