Sparse Tensor-based Multiscale Representation

[davodogster]

Is your feature request related to a problem? Please describe. Hello is there any multiresolution based voxelization available in MinkowskiEngine?

Describe the solution you'd like It looks very useful. Would you be able to implement Sparse Tensor-based Multiscale Representation? https://arxiv.org/pdf/2111.10633.pdf

Describe alternatives you've considered An alternative is just a fixed grid voxelization right? utils.sparse_quantize