You Only Group Once: Efficient Point-Cloud Processing with Token Representation and Relation Inference Module

Chenfeng Xu,Bohan Zhai,Bichen Wu,Tian Li,Wei Zhan,Peter Vajda,Kurt Keutzer,Masayoshi Tomizuka,Chenfeng Xu,Bohan Zhai,Bichen Wu,Tian Li,Wei Zhan,Peter Vajda,Kurt Keutzer,Masayoshi Tomizuka

3D perception on point-cloud is a challenging and crucial computer vision task. A point-cloud consists of a sparse, unstructured, and unordered set of points. To understand a point-cloud, previous point-based methods, such as PointNet++, extract visual features through the hierarchical aggregation of local features. However, such methods have several critical limitations: 1) They require considera...