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Xiaotao Liu

8 accepted papers

2026

CAPO: A Unified Policy Gradient Approach for Reward and Cost Optimization in Safe Reinforcement Learning (Student Abstract)

AAAI 2026technical

In safe reinforcement learning (SRL), there exists an inherent conflict between maximizing reward and minimizing cost. We propose a novel approach that effectively resolve the conflict between maximizing reward and minimizing cost in joint optimization.When the cost exceeds the threshold, we perform

Cited by 0SourcePDFScholar
2026

Efficient UAV Exploration with Hybrid Global–Local Strategy and Adaptive Yaw Planning

ICRA 2026poster

Autonomous exploration in complex environments is frequently hindered by inefficient back-and-forth movements and repetitive revisits to previously explored areas. To address these drawbacks, we propose a two-mode hybrid dynamic exploration strategy that detects isolated frontier clusters and adapti…

Cited by 0Scholar
2025

DGO-VINS: A Visual-Inertial SLAM for Dynamic Environments With Geometric Constraint and Adaptive State Optimization

RA-L 2025

Traditional SLAM performs well in static environments, but experiences degeneration of localization accuracy and stability in dynamic settings. To enhance performance in dynamic environments, this letter presents DGO-VINS, a real-time dynamic visual-inertial SLAM system based on geometric constraint

Cited by 3SourceScholar
2025

Rapid Autonomous Exploration of Large-Scale Environments for Ground Robots Based on Region Partitioning

ICRA 2025

Autonomous exploration in large environments often leads to inefficient long backtracking, as distant targets are prioritized over closer ones. In this work, a hierarchical planning method is proposed, which employs region partitioning to systematically address the aforementioned issue. The space is

Cited by 1SourceScholar
2024

EPL-VINS: Efficient Point-Line Fusion Visual-Inertial SLAM With LK-RG Line Tracking Method and 2-DoF Line Optimization

RA-L 2024

The performance of a visual SLAM system based on point features significantly diminishes in low-textured environments due to the challenges in extracting sufficient and reliable points. The fusion of line and point features improves SLAM system performance by providing additional visual constraints.

Cited by 16SourceScholar
2024

Temporal Adaptive RGBT Tracking with Modality Prompt

AAAI 2024technical

RGBT tracking has been widely used in various fields such as robotics, surveillance processing, and autonomous driving. Existing RGBT trackers fully explore the spatial information between the template and the search region and locate the target based on the appearance matching results. However, the…

Cited by 32SourcePDFScholar
2023

Video Event Restoration Based on Keyframes for Video Anomaly Detection

CVPR 2023poster

Video anomaly detection (VAD) is a significant computer vision problem. Existing deep neural network (DNN) based VAD methods mostly follow the route of frame reconstruction or frame prediction. However, the lack of mining and learning of higher-level visual features and temporal context relationship…

Cited by 112SourcePDFScholar
2022

Dynamic Local Aggregation Network with Adaptive Clusterer for Anomaly Detection

ECCV 2022poster

"Existing methods for anomaly detection based on memory-augmented autoencoder (AE) have the following drawbacks: (1) Establishing a memory bank requires additional memory space. (2) The fixed number of prototypes from subjective assumptions ignores the data feature differences and diversity. To over…