Conversion of point cloud to .STL

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

Answer 1

[Rahul]

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.