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Lijun Chen

12 accepted papers

2025

3D Shape Classification by Registration: Neural-Network-Free and Training-Free

ICASSP 2025accepted

Point cloud classification, crucial for discriminative 3D shape analysis, has witnessed significant progress through the application of deep learning. A significant research focus has been on aggregating local point cloud features. A key limitation of previous methods lies in their inherent opacity,…

Cited by 0SourceScholar
2025

GaRe: Relightable 3D Gaussian Splatting for Outdoor Scenes from Unconstrained Photo Collections

ICCV 2025poster

We propose a 3D Gaussian splatting-based framework for outdoor relighting that leverages intrinsic image decomposition to precisely integrate sunlight, sky radiance, and indirect lighting from unconstrained photo collections. Unlike prior methods that compress the per-image global illumination into…

Cited by 0SourcePDFScholar
2025

MADI: Malicious Agent Detection and Isolation in Mixed Autonomy Traffic Systems

IROS 2025

Mixed autonomy traffic systems face significant security challenges when malicious agents disrupt coordination between autonomous and human-driven vehicles. We present Malicious Agent Detection and Isolation (MADI), a framework addressing two critical forms of disruptive behavior: path order violati

Cited by 0SourceScholar
2024

DL-PoseNet: A Differential Lightweight Network for Pose Regression over SE(3)

ICRA 2024poster

Accurate pose estimation over SE(3) is fundamentally crucial for numerous perception tasks, including camera re-localization. While existing learning-based methods estimated from a series of RGB images have significantly improved the accuracy of pose, the majority of models still face one or two lim…

Cited by 0SourceScholar
2023

LDTSF: A Label-Decoupling Teacher-Student Framework for Semi-Supervised Echocardiography Segmentation

ICASSP 2023accepted

The accurate segmentation of the right and left ventricles with limited labeled data is a challenging task in echocardiographic data analysis. To fully leverage the easily accessible unlabeled data, we propose a label-decoupling teacher-student framework (LDTSF) based on semi-supervised learning. Sp…

Cited by 0SourceScholar
2022

CamLiFlow: Bidirectional Camera-LiDAR Fusion for Joint Optical Flow and Scene Flow Estimation

CVPR 2022oral

In this paper, we study the problem of jointly estimating the optical flow and scene flow from synchronized 2D and 3D data. Previous methods either employ a complex pipeline that splits the joint task into independent stages, or fuse 2D and 3D information in an "early-fusion" or "late-fusion" manner…

Cited by 80PDFcodeScholar
2022

PDQ-Net: Deep probabilistic dual quaternion network for absolute pose regression on $SE(3)$

UAI 2022poster

Accurate absolute pose regression is one of the key challenges in robotics and computer vision. Existing direct regression methods suffer from two limitations. First, some noisy scenarios such as poor illumination conditions are likely to result in the uncertainty of pose estimation. Second, the out…

Cited by 0SourcePDFScholar
2022

Pose Estimation based on a Dual Quaternion Feedback Particle Filter

ICRA 2022poster

Fast and accurate pose estimation is essential for many robotic applications such as SLAM, manipulation, and 3D point registration. Existing solutions to this problem suffer from either high computation overhead due to the nonlinear features or accuracy loss due to linear approximation. In this pape…

Cited by 1SourceScholar
2020

Cooperative Control of Mobile Robots with Stackelberg Learning

IROS 2020poster

Multi-robot cooperation requires agents to make decisions that are consistent with the shared goal without disregarding action-specific preferences that might arise from asymmetry in capabilities and individual objectives. To accomplish this goal, we propose a method named SLiCC: Stackelberg Learnin…

Cited by 12SourceScholar
2018

Game-Theoretic Cooperative Lane Changing Using Data-Driven Models

IROS 2018poster

Self-driving vehicles are being increasingly deployed in the wild. One of the most important next hurdles for autonomous driving is how such vehicles will optimally interact with one another and with their surroundings. In this paper, we consider the lane changing problem that is fundamental to road…

Cited by 32SourceScholar