Point Primitive Transformer for Long-Term 4D Point Cloud Video Understanding

ECCV2022

Hao Wen*, Yunze Liu*, Jingwei Huang, Bo Duan, Li Yi

Official PyTorch code for PPTR, a 4D backbone for long-term point cloud video understanding. we leverage the primitive plane as a mid-level representation to capture the long-term spatial-temporal context in 4D point cloud videos, and propose a novel hierarchical backbone named Point Primitive Transformer(PPTr), which is mainly composed of intra-primitive point transformers and primitive transformers.

Acknowledgement

We thank the authors of P4transformer for their interesting work.

License

MIT