How to convert a binary 3d matrix to mesh.
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I have a 3D binary matrix with 1 being filled volume, and 0 being empty. For example I've added a representation of this matrix filled with a sphere but the matrix could also have been filled with irregular content.
I would like to construct a mesh from 3D binary matrix volume, how would I go about it?
I have come across the isosurf function, but I was not sure if it was applicable or how to get my data in the right format.
Mike Garrity on 29 Apr 2016
Yes, I would think that isosurface is the first thing to try. Just give it the 3D array and an isolevel of 1/2. It'll use linear interpolation to put a surface down the middle of where the 1's and 0's meet.
[x,y,z] = ndgrid(-1:.05:1);
v = sqrt(x.^2+y.^2+z.^2) < .5;
As you can see, the result can be a little lumpy.
If you want your mesh to follow the grid without any interpolation, then you'll probably want a different approach.