融合全局规划与强化学习,实现复杂室内人群环境下的高效安全导航。
A Hybrid Approach to Indoor Social Navigation: Integrating Reactive Local Planning and Proactive Global Planning
- 用全局规划预设带代价的路径点,提前规避可能的人群位置。
- 局部强化学习模型实时避障,保持路径跟随并避免碰撞。
- 新构建2D室内基准测试,推动真实复杂场景下导航研究。
我们研究建筑尺度的室内社交导航问题,要求机器人在不与自由移动的人类发生碰撞的前提下,快速到达目标点。高密度人群、不可预测的人类行为以及室内空间限制使导航任务极为复杂,亟需更先进的方法。本文提出一种模块化导航框架,结合经典方法与深度强化学习(DRL)的优势:全局规划生成带软代价的路径点,对预计的人类位置施加避让成本,引导谨慎行动;局部规划器则基于DRL跟踪这些路径点,在动态环境中实时避障。该组合使智能体能够完成复杂动作,有效应对拥挤且受限的环境,提升导航可靠性。现有多数社交导航研究局限于简单或开放环境,限制了模型在真实复杂场景中的表现。为此,我们引入一个全新的二维基准测试,用于支持室内场景下社交导航策略的研发与评估。在该基准上,我们的方法优于传统和基于强化学习的基线策略。
原文摘要 · Abstract (English)
We consider the problem of indoor building-scale social navigation, where the robot must reach a point goal as quickly as possible without colliding with humans who are freely moving around. Factors such as varying crowd densities, unpredictable human behavior, and the constraints of indoor spaces add significant complexity to the navigation task, necessitating a more advanced approach. We propose a modular navigation framework that leverages the strengths of both classical methods and deep reinforcement learning (DRL). Our approach employs a global planner to generate waypoints, assigning soft costs around anticipated pedestrian locations, encouraging caution around potential future positions of humans. Simultaneously, the local planner, powered by DRL, follows these waypoints while avoiding collisions. The combination of these planners enables the agent to perform complex maneuvers and effectively navigate crowded and constrained environments while improving reliability. Many existing studies on social navigation are conducted in simplistic or open environments, limiting the ability of trained models to perform well in complex, real-world settings. To advance research in this area, we introduce a new 2D benchmark designed to facilitate development and testing of social navigation strategies in indoor environments. We benchmark our method against traditional and RL-based navigation strategies, demonstrating that our approach outperforms both.
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