How to set the `voxel_cfg` for custom dataset?

[zhoujinhai]

I noticed that the parameter 'voxelcfg' varies across different datasets. Could you please advise me on how to set this parameter for my own dataset. My dataset is a human tooth model, with a range of approximately 100mm in x, y, and z.

The parameters 'voxelcfg' I have set are as followsI ：

voxel_cfg:
      scale: 3
      spatial_shape: [128, 512]
      max_npoint: 120000
      min_npoint: 5000

My Train result: