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Autonomous navigation in unknown environments requires multi-scale spatial understanding that captures geometric details, topological connectivity, and global structure to support high-level decision making under partial observability.…

Robotics · Computer Science 2026-04-22 Kuankuan Sima , Longbin Tang , Zhenyu Yang , Haozhe Ma , Lin Zhao

Inspired by the general Vision-and-Language Navigation (VLN) task, aerial VLN has attracted widespread attention, owing to its significant practical value in applications such as logistics delivery and urban inspection. However, existing…

Robotics · Computer Science 2026-04-13 Chengjie Fan , Cong Pan , Zijian Liu , Ningzhong Liu , Jie Qin

Object Goal Navigation-requiring an agent to locate a specific object in an unseen environment-remains a core challenge in embodied AI. Although recent progress in Vision-Language Model (VLM)-based agents has demonstrated promising…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Dujun Nie , Xianda Guo , Yiqun Duan , Ruijun Zhang , Long Chen

Navigating unstructured environments requires assessing traversal risk relative to a robot's physical capabilities, a challenge that varies across embodiments. We present CATNAV, a cost-aware traversability navigation framework that…

In this article, we propose a novel navigation framework that leverages a two layered graph representation of the environment for efficient large-scale exploration, while it integrates a novel uncertainty awareness scheme to handle dynamic…

Robotics · Computer Science 2024-02-07 Akash Patel , Mario A V Saucedo , Christoforos Kanellakis , George Nikolakopoulos

In this work we propose a holistic framework for autonomous aerial inspection tasks, using semantically-aware, yet, computationally efficient planning and mapping algorithms. The system leverages state-of-the-art receding horizon…

Maritime port inspection plays a critical role in ensuring safety, regulatory compliance, and operational efficiency in complex maritime environments. However, existing inspection methods often rely on manual operations and conventional…

Robotics · Computer Science 2026-01-21 Muhayy Ud Din , Waseem Akram , Ahsan B. Bakht , Irfan Hussain

Embodied navigation is a fundamental capability for robotic agents operating. Real-world deployment requires open vocabulary generalization and low training overhead, motivating zero-shot methods rather than task-specific RL training.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Xun Huang , Shijia Zhao , Yunxiang Wang , Xin Lu , Wanfa Zhang , Rongsheng Qu , Weixin Li , Yunhong Wang , Chenglu Wen

In this paper, we propose a training-free framework for vision-and-language navigation (VLN). Existing zero-shot VLN methods are mainly designed for discrete environments or involve unsupervised training in continuous simulator…

Robotics · Computer Science 2025-09-15 Hang Yin , Haoyu Wei , Xiuwei Xu , Wenxuan Guo , Jie Zhou , Jiwen Lu

Obstacle detection plays an important role in unmanned surface vehicles (USV). The USVs operate in highly diverse environments in which an obstacle may be a floating piece of wood, a scuba diver, a pier, or a part of a shoreline, which…

Computer Vision and Pattern Recognition · Computer Science 2015-03-09 Matej Kristan , Vildana Sulic , Stanislav Kovacic , Janez Pers

We present a novel high-level planning framework that leverages vision-language models (VLMs) to improve autonomous navigation in unknown indoor environments with many dead ends. Traditional exploration methods often take inefficient routes…

Robotics · Computer Science 2025-10-14 D. Schwartz , K. Kondo , J. P. How

Fine-grained RGBT image semantic segmentation is crucial for all-weather unmanned aerial vehicle (UAV) scene understanding. However, UAV RGBT image semantic segmentation faces two coupled challenges: cross-modal spatial misalignment caused…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Fangqiang Fan , Zhicheng Zhao , Xiaoliang Ma , Chenglong Li , Jin Tang

We present MG-Nav (Memory-Guided Navigation), a dual-scale framework for zero-shot visual navigation that unifies global memory-guided planning with local geometry-enhanced control. At its core is the Sparse Spatial Memory Graph (SMG), a…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Bo Wang , Jiehong Lin , Chenzhi Liu , Xinting Hu , Yifei Yu , Tianjia Liu , Zhongrui Wang , Xiaojuan Qi

With the rapid growth of the low-altitude economy, UAVs have become crucial for measurement and tracking in patrol systems. However, in GNSS-denied areas, satellite-based localization methods are prone to failure. This paper presents a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Tao Liu , Kan Ren , Qian Chen

Grasping unknown objects in unstructured environments is a critical challenge for service robots, which must operate in dynamic, real-world settings such as homes, hospitals, and warehouses. Success in these environments requires both…

Robotics · Computer Science 2026-02-17 Avihai Giuili , Rotem Atari , Avishai Sintov

We propose Graph2Nav, a real-time 3D object-relation graph generation framework, for autonomous navigation in the real world. Our framework fully generates and exploits both 3D objects and a rich set of semantic relationships among objects…

Robotics · Computer Science 2025-04-24 Tixiao Shan , Abhinav Rajvanshi , Niluthpol Mithun , Han-Pang Chiu

Vision-and-Language Navigation (VLN), where an agent follows instructions to reach a target destination, has recently seen significant advancements. In contrast to navigation in discrete environments with predefined trajectories, VLN in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Guangzhao Dai , Jian Zhao , Yuantao Chen , Yusen Qin , Hao Zhao , Guosen Xie , Yazhou Yao , Xiangbo Shu , Xuelong Li

Vision-Language Navigation (VLN) is evolving from single-point pathfinding toward the more challenging Multi-Goal VLN. This task requires agents to accurately identify multiple entities while collaboratively reasoning over their…

Artificial Intelligence · Computer Science 2026-03-05 Ling Luo , Qiangian Bai

Natural language (NL) navigation for low-altitude unmanned aerial vehicles (UAVs) offers an intelligent and convenient solution for low-altitude aerial services by enabling an intuitive interface for non-expert operators. However, deploying…

Language-goal aerial navigation requires UAVs to localize targets in the complex outdoors, such as urban blocks based on textual instructions. The indoor methods are often hard to scale to urban scenes due to ambiguous objects, limited…

Robotics · Computer Science 2026-03-10 Haotian Xu , Yue Hu , Chen Gao , Zhengqiu Zhu , Yong Zhao , Yong Li , Quanjun Yin