Image segmentation from point clouds

I have some .ply files that storing 3D triangle meshes describing binary masks in image segmentation. These masks are manually contoured slice-by-slice. Usually they are stored in RS Dicom files. Now I want to read these ply files in MATLAB and convert them back to binary masks or contours. Any related resources or suggestions are appreciated. Thanks!

[darova]

Maybe griddata

Answer 1

[Sahil Jain]

Hi. You can use the "pcread" function to read point clouds from ".ply" files into MATLAB. For more information about point cloud processing in MATLAB, please refer to the "Point Cloud Processing" documentation page.

[Xinyi Li]

Thank you for the answer. A following up question is, how do I convert point clouds (representing a shell) to binary masks (representing a volume, enclosed by the shell)?