OctFormer: 三维点云的基于八叉树的 Transformer 模型（英文版）

英文标题：OctFormer: Octree-based Transformers for 3D Point Clouds中文摘要：OctFormer 使用基于八叉树的关注机制进行分割和检测，这种关注机制具有高效性和灵活性，且在多个基准测试中表现出优异的性能。英文摘要：OctFormer can not only serve as a general and effective backbone for 3D pointcloud segmentation and object detection but also have linear complexity and isscalable for large-scale point clouds. The key challenge in applyingtransformers to point clouds is reducing the quadratic, thus overwhelming,computation complexity of attentions. To combat this issue, several