Conversion of point cloud to .STL

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ankit nayak 2018-3-15

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回答： Rahul 2025-5-16

Is there any code, function or command in the MATLAB. which can convert point cloud into the STL model?

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Rahul 2025-5-16

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Hi @ankit nayak,

In order to convert a point cloud to an STL model consider the following steps:

Estimate the surface mesh of the point cloud using 'alphaShape' or 'boundary' with 'delaunayTriangulation' functions.
After obtaining the mesh use the 'triangulation' function to create its object using the vertices and faces of the surface.
Use the 'stlwite' function which uses the 'triangulation' object created to create the required STL model.

The following MATLAB Answers can be referred for good insights:

https://www.mathworks.com/matlabcentral/answers/26895-point-cloud-to-mesh-surface-grid-to-stl

https://www.mathworks.com/matlabcentral/answers/264900-how-to-translate-3d-scanned-point-clouds-to-stl-format

The following MathWorks documentations can be referred to know more:

'alphaShape': https://www.mathworks.com/help/matlab/ref/alphashape.html

'boundary': https://www.mathworks.com/help/matlab/ref/boundary.html

'delaunayTriangulation': https://www.mathworks.com/help/matlab/ref/delaunaytriangulation.html

'triangulation': https://www.mathworks.com/help/matlab/ref/triangulation.html

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

Thanks.

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