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PointMixer: MLP-Mixer for Point Cloud Understanding

PWC

This is an official implementation for the paper,

PointMixer: MLP-Mixer for Point Cloud Understanding
Jaesung Choe*, Chunghyun Park*, Francois Rameau, Jaesik Park, and In So Kweon
European Conference on Computer Vision (ECCV), Tel Aviv, Israel, 2022
[Paper] [Video] [VideoSlide] [Poster]


(*: equal contribution)

(TL;DR) Pytorch implementation of PointMixer⚡ and Point Transformer⚡

We are currently updating this repository 🔥

Click to expand!
  • semseg
    • methods
      • pointmixer
      • point transformer
    • s3dis weights
    • scannet weights
    • logger option (tensorboard / neptune)
  • objcls
  • recon

Features

1. Universal point set operator: intra-set, inter-set, and hier-set mixing

  • Newly revisit the use of K-Nearest Neighbors
  • Can process arbitrary number of points

2. Symmetric encoder-decoder network for point clouds

  • Maintain the hierarchical relation among points
  • Design learning-based transition up/down layers (i.e., hier-set mixing)

3. Parameter efficient design (6.5M)


References

@article{choe2021pointmixer,
  title={PointMixer: MLP-Mixer for Point Cloud Understanding},
  author={Choe, Jaesung and Park, Chunghyun and Rameau, Francois and Park, Jaesik and Kweon, In So},
  journal={arXiv preprint arXiv:2111.11187},
  year={2021}
}