ValueError: vertex or face count are zero: terminating marching cubes

[akjagadish]

Was trying to extract vertices, faces and triangles from voxel information and was getting this error.

import numpy as np
import mcubes
from marching_cubes import march
import collada
import pymesh
import sys

inp_file = "../datasets/output/surface-recon/result.dat"
x = np.fromfile(inp_file, dtype=np.uint8)
dim = x[:3]
%Extract necessary elements
voxels = x[12:-16]
voxels = voxels.reshape((dim[0], dim[1], dim[2]))
vertices, normals, triangles = march(voxels, 0)

On running the aforementioned script I get:
ValueError: vertex or face count are zero: terminating marching cubes

[pmneila]

Hi,

While you are importing mcubes, you are actually using another implementation of the marching cubes different from mine (marching_cubes). The correct way of using mcubes would be

vertices, triangles = mcubes.marching_cubes(voxels, 0)

The marching_cubes library you are using is the one from ilastik. Check https://github.com/ilastik/marching_cubes.