Fitting a cilinder to 3D vertices
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Alonso Figueroa
le 29 Mai 2018
Commenté : Walter Roberson
le 31 Mai 2020
I am having problems fitting a cylinder to a point cloud. Trying to use "pcfitcylinder", an error saying 'the value of 'ptCloud' is invalid. Expected ptCloud to be a pointCloud object' while the pointcloud is a nx3 created from the vertices of an .stl file. The code is:
Bone_model=stlread(fullfile(Bone_path,Bone_file));
maxDistance=.5
cilinder = pcfitcylinder(Bone_model.vertices,maxDistance);
pcshow (Bone_model.vertices);hold on;
plot(cilinder)
Is there anything i'm doing wrong?
1 commentaire
Réponse acceptée
Walter Roberson
le 30 Mai 2018
stlread() appears to be one of the functions from the File Exchange, probably https://www.mathworks.com/matlabcentral/fileexchange/22409-stl-file-reader
The vertices returned by that stlread() function are configured for use by patch(). pcfitcylinder() requires that a pointcloud object be passed in.
You might be able to use
pc = pointcloud(Bone_model.vertices);
[cilinder,inlierIndices] = pcfitcylinder(pc, maxDistance);
cylpc = select(cilinder, inlierIndices);
pcshow(cylpc)
Note that pcfitcylinder attempts to find a subset of the pointcloud that is in the form of an cylinder.
7 commentaires
M.S. Khan
le 31 Mai 2020
Hi Danny,
could you please explain the coding to me. i also want to apply it on my problem.
Warm regards,
Walter Roberson
le 31 Mai 2020
M.S. Khan, which coding are you referring to? The only line of code that Daniel posted was
TalusPtCloud = pointCloud(Talus.solidVertices{1,1}, 'Normal', Talus.solidNormals{1,1});
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Point Cloud Processing dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!