Extracting information from 3D model - .stl file management on matlab
21 views (last 30 days)
Show older comments
Juan Pablo Guamn Bernal
on 25 May 2021
Commented: Juan Pablo Guamn Bernal
on 26 May 2021
Hi everyone
I started reading a .stl file, I alredy know how to calculate volumen and superficial area from it, but I need to extract even more info, cause it will be input data for a convutional NN. So, I need to extract data as, minimun distance between surfaces, minimum radius, maximum distance between surfaces, and so on. To do so, I used triangulation, and with some features, I was able to obtain the normal vector of the surfaces, also the X,Y,Z coordinates fo the center of each triangle, I thought that I will be able to find the minimun distance and maximum, using norm(b-a), to find all distances between trangle centers, but did not came out I as expected. This is the code that I made for this. I will appreciate any help or idea to achieve this goal, thanks
TR = triangulation(fv.ConnectivityList,fv.Points)
E = edges(TR)
startVert = TR.Points(1,:);
endVert = TR.Points([2 3 5],:);
F = faceNormal(TR)
P = incenter(TR)
for i = 1:size(P,1);
a = P(i,:);
b = P((i+1),:);
d = norm(b-a);
dis(i) = d;
dis;
end
Min_dis = min(dis);
Min_dis
2 Comments
Accepted Answer
darova
on 26 May 2021
Try this link: Surface Curvature
Can you just analyze edge length to find minimum/maximum distances?
More Answers (0)
See Also
Categories
Find more on Triangulation Representation in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!