LidarGait: Benchmarking 3D Gait Recognition with Point Clouds

Chuanfu Shen1; Fan Chao2; Wei Wu2; Rui Wang2; George Q. Huang3; Shiqi Yu2

10.1109/CVPR52729.2023.00108

2023

1063-6919

979-8-3503-0130-4

2023 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)

1054-1063

17-24 June 2023

Vancouver, BC, Canada

Video-based gait recognition has achieved impressive results in constrained scenarios. However, visual cameras neglect human 3D structure information, which limits the feasibility of gait recognition in the 3D wild world. Instead of extracting gait features from images, this work explores precise 3D gait features from point clouds and proposes a simple yet efficient 3D gait recognition framework, termed LidarGait. Our proposed approach projects sparse point clouds into depth maps to learn the representations with 3D geometry information, which outperforms existing point-wise and camera-based methods by a significant margin. Due to the lack of point cloud datasets, we build the first large-scale LiDAR-based gait recognition dataset, SUSTech1K, collected by a LiDAR sensor and an RGB camera. The dataset contains 25,239 sequences from 1,050 subjects and covers many variations, including visibility, views, occlusions, clothing, carrying, and scenes. Extensive experiments show that (1) 3D structure information serves as a significant feature for gait recognition. (2) LidarGait outperforms existing point-based and silhouette-based methods by a significant margin, while it also offers stable cross-view results. (3) The LiDAR sensor is superior to the RGB camera for gait recognition in the outdoor environment. The source code and dataset have been made available at https://lidargait.github.io.

Biometrics

其他

CPCI-S

WOS:001058542601035

IEEE

1.Department of Industrial and Manufacturing Systems Engineering, The University of Hong Kong
2.Department of Computer Science and Engineering, Southern University of Science and Technology
3.Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University

Chuanfu Shen,Fan Chao,Wei Wu,et al. LidarGait: Benchmarking 3D Gait Recognition with Point Clouds[C],2023:1054-1063.