DelIso Software for Delaunay meshing of Isosurfaces

Tamal K DeyJoshua A Levine


DelIso software can mesh an Iso-surface from volume data with Delaunay triangles that have bounded aspect ratio. Currently it can handle 256x256x256 volume data on a state of the art PC in 10-15 minutes. It maintains the topology and approximates the geometry  of the original surface. It works on the principle of Delaunay refinement that finds points on the given surface till the topology and geometry are recovered and then mesh them with Delaunay triangles restricted to the surface.  The assumption about the input is that the actual Isosurface does not have sharp edges and sharp corners. In these cases the algorithm may produce some artifacts.The software is based on recent results described in the  paper given below.  

Codes are  available for Linux,  and Windows. Please send an email to to get the password to access the download area.

  paper.   Download area.


T. K. Dey and J. A. Levine. Delaunay meshing of isosurfaces. Proc. Shape Modeling International, 2007.

T. K. Dey, G. Li and T. Ray.  Polygonal surface remeshing with Delaunay refinement. Proc.  14th Internat. Mehsing Roundtable (2005), 343--361.

Additional recommendation:

S.-W. Cheng, T. K. Dey, E. A. Ramos and T. Ray.  Sampling and meshing a surface with guaranteed topology and geometry. Proc. 20th Annu. Sympos. Comput. Geom. (2004), 280--289.

 Other papers

Other Software : SurfRemeshQualmesh, AMLS,  Cocone,  Segmatch

The software used the CGAL libraries. 
The output of the DelIso software can be viewed with GEOMVIEW

Disclaimer: We do not intend to be responsible for the maintenance of the software.

Copyright: Jyamiti group at the Ohio State University. No commercial use of the software is permitted without proper license.