adaptive_isotropic_remeshing
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yoterel
Implementation of the paper: "Adaptive Remeshing for Real-Time Mesh Deformation"
This is an unofficial implementation of the paper:
Adaptive Remeshing for Real-Time Mesh Deformation
The compilation of this code (C++) produces a python library as well (using numpyeigen).
| Nefratiti compressed from ~100k faces to ~36k using this implementation. Notice the mesh is much more isotropic. |
|
Based mostly on an implementation of A Remeshing Approach to Multiresolution Modeling from here.
The key contribution of this paper is introducing a "sizing field" which is a scalar-per-vertex dependant on the local curvature of the mesh, and dictates the target edge length (for which the vertex is one of its endpoints) - high curvature areas recieve a smaller sizing field).
This implementation degenerates into the original one with the flag -na, forcing a constant sizing field upon all the mesh.
Installation
- Clone the repository with all submodules (libigl, numpyeigen)
git clone --recurse-submodules https://github.com/yoterel/adaptive_isotropic_remeshing.git
- The usual cmake & make:
cd adaptive_isotropic_remeshing
mkdir build
cd build
cmake ..
make
- launch (see options below):
./adaptive_remesh ./../resource/nefratiti_orig.ply ./nefratiti_compressed.obj -e 0.0008 -i 5
or for python (requires libigl for loading the mesh, not for actual remeshing):
import igl
import numpy as np # for converting double to float
from py_ada_remesh import adaptive_remesh_botsch
v, f = igl.read_triangle_mesh("./../resource/nefratiti_orig.ply")
# adaptive_remesh_botsch(v, f, e, p, a) - note: "a" stands for adaptive (opposite of -na option).
new_v, new_f = adaptive_remesh_botsch(v, np.int32(f), 0.0008, 5, False, True)
igl.write_obj("nefratiti_compressed.obj", new_v, new_f)
where v is a Nx3 numpy array, f is a Mx3 numpy array, and for the other parameters see below.
Options
-i | Number of iterations to run remeshing
-e | Epsilon (for adaptive) / Target Edge Length (For non adaptive), controls the resolution of output
-p | Project result vertices of each iteration on original mesh
-na | Not Adaptive, will use original botsch & kobbelt remeshing algorithm
Common Issues
- Passing non-manifold meshes to this algorithm: this isn't supported (by design)
- A non orientable mesh will also fail. Normals should be facing outwards in the input.
- Passing in a ridiculous epsilon value (either too small or too big) will result in failure.
yoterel