I have a 3D logical matrix represented a segmented spinal volume. I want to export this volume as .obj or .stl for further use. How can I do this?

I processed a volume of CT spinal images, and segmented out the ROI for my desired application. I now want to export the 3D logical matrix as a .obj or .stl file. I have not found a feasible solution to this yet. Does anyone know how I can go about doing this?

Answer 1

[Matt J]

Use isosurface to triangulate the surface of the spine. Then, use stlwrite,

https://www.mathworks.com/help/matlab/ref/stlwrite.html

[Anupreet Singh]

Hi Matt,

Thanks for your response. So my segmented volume is of the following form: BW - 512x513x312 logical.

I used isosurface in the following way: s = isosurface(BW);

The output was a struct with two fields: vertices and faces.

I attempted to use this in the stlwrite function, but I got an error back saying that s is not a triangulation object. Am I missing a step?