cgalsurf - 3D surface mesh extraction from volumetric image
cgalsurf input.inr threshold x0 y0 z0 r2 angle surf-size approx
maxnode output.off <randomseed> <init-size>
The cgalsurf utility extracts a surface mesh at a specified
threshold (level-set) from a volumetric image - either in binary or
gray-scale values, using the CGAL library (http://cgal.org). This utility is
adapted based on the 3D surface generation demo in the CGAL package.
Please see https://doc.cgal.org/latest/Surface_mesher/ for details
regarding the underlying algorithm.
This program accepts the following input parameters (all but the
last two parameters are required):
- input.inr
- The input volumetric image in the INR format
- threshold
- A number representing the threshold at which the surface is
extracted.
- x0
- The bounding sphere center x-coordinate
- y0
- The bounding sphere center y-coordinate
- z0
- The bounding sphere center y-coordinate
- r2
- The bounding sphere's radius squared
- angle
- Lower-bound of the angles (in degree) in surface triangles
- surf-size
- Lower-bound of the edge-length (in voxel unit) in surface triangles
- approx
- Upper-bound of the deviation distance (in voxel unit) of the surface
triangles to the voxelated boundaries
- maxnode
- Upper-bound of the node numbers in the output mesh
- output.off
- Output surface mesh in the OFF format
- randomseed|(optional,
default: -1)
- Random number generator seed (large positive integer, -1 to use system
clock)
- init-size|(optional)
- The number of nodes in the initial surface (sampled on the bounding
sphere) cgalmesh(7), cgalsimp2(7), cgalpoly(7), cork(7), meshfix(7),
jmeshlib(7)
Laurent Rineau, Mariette Yvinec, and Qianqian Fang
(fangqq@gmail.com)