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In unseen and complex outdoor environments, collision avoidance navigation for unmanned aerial vehicle (UAV) swarms presents a challenging problem. It requires UAVs to navigate through various obstacles and complex backgrounds. Existing…

Robotics · Computer Science 2024-07-16 Jiafan Zhuang , Gaofei Han , Zihao Xia , Boxi Wang , Wenji Li , Dongliang Wang , Zhifeng Hao , Ruichu Cai , Zhun Fan

The major challenges of collision avoidance for robot navigation in crowded scenes lie in accurate environment modeling, fast perceptions, and trustworthy motion planning policies. This paper presents a novel adaptive environment model…

Robotics · Computer Science 2022-10-28 Shuaijun Wang , Rui Gao , Ruihua Han , Shengduo Chen , Chengyang Li , Qi Hao

Multi-modal learning has emerged as a key technique for improving performance across domains such as autonomous driving, robotics, and reasoning. However, in certain scenarios, particularly in resource-constrained environments, some…

Robotics · Computer Science 2026-01-01 Rui Liu , Yu Shen , Peng Gao , Pratap Tokekar , Ming Lin

This paper presents a multi-agent reinforcement learning (MARL) framework for cooperative collision avoidance of UAV swarms leveraging domain knowledge-driven reward. The reward is derived from knowledge in the domain of image processing,…

Multiagent Systems · Computer Science 2025-07-16 Shuangyao Huang , Haibo Zhang , Zhiyi Huang

Many existing obstacle avoidance algorithms overlook the crucial balance between safety and agility, especially in environments of varying complexity. In our study, we introduce an obstacle avoidance pipeline based on reinforcement…

Robotics · Computer Science 2024-02-14 Hang Yu , Christophe De Wagter , Guido C. H. E de Croon

Autonomous navigation in unknown environments with obstacles remains challenging for micro aerial vehicles (MAVs) due to their limited onboard computing and sensing resources. Although various collision avoidance methods have been…

Robotics · Computer Science 2023-09-19 Ruoyu Wang , Zixuan Guo , Yizhou Chen , Xinyi Wang , Ben M. Chen

This paper presents our method for enabling a UAV quadrotor, equipped with a monocular camera, to autonomously avoid collisions with obstacles in unstructured and unknown indoor environments. When compared to obstacle avoidance in ground…

Robotics · Computer Science 2019-11-20 Abhik Singla , Sindhu Padakandla , Shalabh Bhatnagar

Fixed-wing Unmanned Aerial Vehicles (UAVs) are one of the most commonly used platforms for the burgeoning Low-altitude Economy (LAE) and Urban Air Mobility (UAM), due to their long endurance and high-speed capabilities. Classical obstacle…

Robotics · Computer Science 2024-11-28 Haochen Chai , Meimei Su , Yang Lyu , Zhunga Liu , Chunhui Zhao , Quan Pan

Collision avoidance is a crucial task in vision-guided autonomous navigation. Solutions based on deep reinforcement learning (DRL) has become increasingly popular. In this work, we proposed several novel agent state and reward function…

Robotics · Computer Science 2022-10-13 Sirui Song , Kirk Saunders , Ye Yue , Jundong Liu

In this paper, we present an on-board vision-based approach for avoidance of moving obstacles in dynamic environments. Our approach relies on an efficient obstacle detection and tracking algorithm based on depth image pairs, which provides…

Robotics · Computer Science 2020-02-14 Jiahao Lin , Hai Zhu , Javier Alonso-Mora

Despite the success of AI-enabled onboard perception, on-ramp merging has been one of the main challenges for autonomous driving. Due to limited sensing range of onboard sensors, a merging vehicle can hardly observe main road conditions and…

Robotics · Computer Science 2022-08-16 Gaurav Bagwe , Jian Li , Xiaoyong Yuan , Lan Zhang

Reinforcement Learning (RL) has presented an impressive performance in video games through raw pixel imaging and continuous control tasks. However, RL performs poorly with high-dimensional observations such as raw pixel images. It is…

This paper investigates federated multimodal learning (FML) assisted by unmanned aerial vehicles (UAVs) with a focus on minimizing system latency and providing convergence analysis. In this framework, UAVs are distributed throughout the…

Machine Learning · Computer Science 2025-10-03 Shaba Shaon , Dinh C. Nguyen

Autonomous navigation of Unmanned Surface Vehicles (USVs) that is safe and compliant with the International Regulations for Preventing Collisions at Sea (COLREGs) remains a formidable challenge in dynamic maritime environments, particularly…

Robotics · Computer Science 2026-05-29 Yuhang Zhang , Shuqi Chai , Yukang Zhang , Liusha Yang , Mingchuan Zhang , Wei Wang , Qingjiang Shi , Quanbo Ge

Integration of reinforcement learning with unmanned aerial vehicles (UAVs) to achieve autonomous flight has been an active research area in recent years. An important part focuses on obstacle detection and avoidance for UAVs navigating…

Artificial Intelligence · Computer Science 2021-03-12 Jeremy Roghair , Kyungtae Ko , Amir Ehsan Niaraki Asli , Ali Jannesari

We propose CARE (Collision Avoidance via Repulsive Estimation) to improve the robustness of learning-based visual navigation methods. Recently, visual navigation models, particularly foundation models, have demonstrated promising…

Robotics · Computer Science 2025-08-11 Joonkyung Kim , Joonyeol Sim , Woojun Kim , Katia Sycara , Changjoo Nam

Object-goal visual navigation aims to reach a specific target object using egocentric visual observations. Recent deep reinforcement learning (DRL) approaches have achieved promising success rates but often neglect collisions during…

Robotics · Computer Science 2026-05-07 Hongwu Wang , Shiwei Lian , Feitian Zhang

This paper contributes a novel and modularized learning-based method for aerial robots navigating cluttered environments containing hard-to-perceive thin obstacles without assuming access to a map or the full pose estimation of the robot.…

Robotics · Computer Science 2023-07-24 Mihir Kulkarni , Huan Nguyen , Kostas Alexis

Most recent UAV (Unmanned Aerial Vehicle) detectors focus primarily on general challenge such as uneven distribution and occlusion. However, the neglect of scale challenges, which encompass scale variation and small objects, continues to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Xuexue Li

In the last twenty years, unmanned aerial vehicles (UAVs) have garnered growing interest due to their expanding applications in both military and civilian domains. Detecting non-cooperative aerial vehicles with efficiency and estimating…

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