CGAL users discussion list

[Kim Donghyeon <>]

Hi, I have a question about CGAL volume meshing.

 

I’m working on generating head mesh from 3d medical image (already segemented).

 

It is exactly same as brain mesh picture on 3D Mesh Generation user manual. (https://doc.cgal.org/latest/Mesh_3/index.html)

 

My problem is, I could generate volume mesh, but thr surface of each label is very rough (not smooth)

 

The resolution of segmented image is 256 * 256 * 256 (1mm * 1mm * 1mm). And also, I compared the result of Cleaver2 mesher and cgal mesher.

 

I understand it could have different result. But cgal have rough surface mesh compared with the result of cleaver2.

 

I think I missused volume mesh paramemter.

 

(my input data is: https://drive.google.com/file/d/1DUt-gSZ2uM8Rzv_9tfb80aWOmPLXbPl0/view?usp=sharing  )

 

My code is based on “Mesh_3/mesh_3D_image_variable_size.cpp” and used

 

           double facet_angle = 30;

           double facet_size = 2;

           double facet_distance = 2;

           Sizing_field cell_radius_edge_ratio(1.5);

 

To solve it, I already changed facet_size from 0.00001 to 2, but it does not affect the result (I did same value on facet_distance).

 

Is it a normal situiation? and could you give an advice for me?

 

Also I just want to know the detailed parameter of the brain mesh which is on the top of 3D Mesh Generation document and chest mesh which figure number is 54.22

 

Thank you

Kim

 

 

김동현 Donghyeon Kim
Co-Founder / Chief Technology Officer (CTO)
NEUROPHET

Mobile : +82-10-9361-3781
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