Extract Mesh Problem

[johnren-code]

Loading trained model at iteration 30000
Reading camera 240/240
Loading Training Cameras
Loading Test Cameras
export training images ...
reconstruct radiance fields: 240it [00:03, 64.30it/s]
export images: 240it [02:02, 1.97it/s]
export mesh ...
reconstruct radiance fields: 240it [00:02, 82.01it/s]
Running tsdf volume integration ...
voxel_size: 0.004
sdf_trunc: 0.02
depth_truc: 3.0
TSDF integration progress: 240it [00:01, 159.15it/s]
[Open3D WARNING] Write PLY failed: mesh has 0 vertices.
mesh saved at /root/autodl-tmp/project/2d-gaussian-splatting/output/127876ac-b/train/ours_30000/fuse.ply
post processing the mesh to have 1000 clusterscluster_to_kep
[Open3D DEBUG] [ClusterConnectedTriangles] Compute triangle adjacency
[Open3D DEBUG] [ClusterConnectedTriangles] Done computing triangle adjacency
[Open3D DEBUG] [ClusterConnectedTriangles] Done clustering, #clusters=0
Traceback (most recent call last):
File "render.py", line 102, in
mesh_post = post_process_mesh(mesh, cluster_to_keep=args.num_cluster)
File "/root/autodl-tmp/project/2d-gaussian-splatting/utils/mesh_utils.py", line 35, in post_process_mesh
n_cluster = np.sort(cluster_n_triangles.copy())[-cluster_to_keep]
IndexError: index -1000 is out of bounds for axis 0 with size 0.

I train and render with my own dataset. What is the possible problem?

[hbb1]

Related to #14

[johnren-code]

Thank you for your advice! I have adjusted the depth_trunc accroding to the scene. The [Open3D WARNING] Write PLY failed: mesh has 0 vertices is missed. But the error still occurs:

Traceback (most recent call last):
File "render.py", line 102, in
mesh_post = post_process_mesh(mesh, cluster_to_keep=args.num_cluster)
File "/root/autodl-tmp/project/2d-gaussian-splatting/utils/mesh_utils.py", line 35, in post_process_mesh
n_cluster = np.sort(cluster_n_triangles.copy())[-cluster_to_keep]
IndexError: index -1000 is out of bounds for axis 0 with size 325

[johnren-code]

post processing the mesh to have 1000 clusterscluster_to_kep
[Open3D DEBUG] [ClusterConnectedTriangles] Compute triangle adjacency
[Open3D DEBUG] [ClusterConnectedTriangles] Done computing triangle adjacency
[Open3D DEBUG] [ClusterConnectedTriangles] Done clustering, #clusters=325
Traceback (most recent call last):
File "render.py", line 102, in
mesh_post = post_process_mesh(mesh, cluster_to_keep=args.num_cluster)
File "/root/autodl-tmp/project/2d-gaussian-splatting/utils/mesh_utils.py", line 35, in post_process_mesh
n_cluster = np.sort(cluster_n_triangles.copy())[-cluster_to_keep]
IndexError: index -1000 is out of bounds for axis 0 with size 325

[johnren-code]

Should I adjust the value of n_cluster?

[hbb1]

Not related to the post-processing step.

The [Open3D WARNING] Write PLY failed: mesh has 0 vertices is missed.

It suggests that you don't effective adjust the depth_trunc and the mesh still has 0 vertices.
You may estimate the depth range according to the values of the depth-map or according to the the camera extent.