1 code implementation • 27 Dec 2023 • Tianxin Huang, Qingyao Liu, Xiangrui Zhao, Jun Chen, Yong liu
As point clouds are 3D signals with permutation invariance, most existing works train their reconstruction networks by measuring shape differences with the average point-to-point distance between point clouds matched with predefined rules.
1 code implementation • 10 Dec 2023 • Jianbiao Mei, Yu Yang, Mengmeng Wang, Junyu Zhu, Xiangrui Zhao, Jongwon Ra, Laijian Li, Yong liu
Semantic scene completion (SSC) aims to predict the semantic occupancy of each voxel in the entire 3D scene from limited observations, which is an emerging and critical task for autonomous driving.
1 code implementation • 13 Mar 2023 • Chencan Fu, Lin Li, Linpeng Peng, Yukai Ma, Xiangrui Zhao, Yong liu
Place recognition is a challenging yet crucial task in robotics.
1 code implementation • 3 Aug 2022 • Xiangrui Zhao, Sheng Yang, Tianxin Huang, Jun Chen, Teng Ma, Mingyang Li, Yong liu
To repetitively extract them as features and perform association between discrete LiDAR frames for registration, we propose the first learning-based feature segmentation and description model for 3D lines in LiDAR point cloud.
no code implementations • 21 Dec 2021 • Jun Chen, Yuang Liu, Xiangrui Zhao, Mengmeng Wang, Yong liu
As a result, we prove that, if initial metrics have an $L^2$-norm perturbation which deviates from the Hyperbolic metric on the Poincar\'e ball, the scaled Ricci-DeTurck flow of such metrics smoothly and exponentially converges to the Hyperbolic metric.
1 code implementation • 1 Jul 2021 • Lin Li, Xin Kong, Xiangrui Zhao, Tianxin Huang, Yong liu
We also present a two-step global semantic ICP to obtain the 3D pose (x, y, yaw) used to align the point cloud to improve matching performance.
Ranked #1 on Visual Place Recognition on KITTI
no code implementations • 22 Jun 2021 • Lin Li, Xin Kong, Xiangrui Zhao, Wanlong Li, Feng Wen, Hongbo Zhang, Yong liu
LiDAR-based SLAM system is admittedly more accurate and stable than others, while its loop closure detection is still an open issue.
no code implementations • ICCV 2021 • Tianxin Huang, Hao Zou, Jinhao Cui, Xuemeng Yang, Mengmeng Wang, Xiangrui Zhao, Jiangning Zhang, Yi Yuan, Yifan Xu, Yong liu
The RFE extracts multiple global features from the incomplete point clouds for different recurrent levels, and the FDC generates point clouds in a coarse-to-fine pipeline.
1 code implementation • 1 Nov 2020 • Licheng Wen, Zhen Zhang, Zhe Chen, Xiangrui Zhao, Yong liu
In this paper, we give a mathematical formalization of Multi-Agent Path Finding for Car-Like robots (CL-MAPF) problem.
Robotics Multiagent Systems
1 code implementation • 26 Aug 2020 • Xin Kong, Xuemeng Yang, Guangyao Zhai, Xiangrui Zhao, Xianfang Zeng, Mengmeng Wang, Yong liu, Wanlong Li, Feng Wen
First, we propose a novel semantic graph representation for the point cloud scenes by reserving the semantic and topological information of the raw point cloud.