用事件相机提升机器人实时导航与操作性能
SEBVS: Synthetic Event-based Visual Servoing for Robot Navigation and Manipulation
- 在Gazebo中实现从RGB生成事件流的ROS工具包
- 事件驱动策略在两种任务中均优于传统视觉方法
- 适合研究实时机器人感知与事件相机应用的学者
事件相机具备微秒级延迟、高动态范围和低功耗特性,适用于运动模糊、遮挡和光照变化等复杂条件下的实时机器人感知。然而,主流机器人仿真器中仍缺乏对合成事件视觉的支持,限制了事件驱动方法在导航与操作任务中的评估。本文提出一个开源、易用的v2e ROS包,可在Gazebo中实现从RGB图像流生成事件流。该工具包被用于研究事件驱动机器人策略(ERP),评估了两类典型场景:(1) 移动机器人追踪物体;(2) 机械臂检测并抓取物体。采用行为克隆训练基于Transformer的事件策略,并与基于RGB的方法在多种工况下对比。实验表明,事件引导策略始终表现更优,验证了事件感知在提升实时机器人导航与操作中的潜力,为事件相机在机器人策略学习中的广泛应用奠定基础。代码与数据集详见:https://eventbasedvision.github.io/SEBVS/
原文摘要 · Abstract (English)
Event cameras offer microsecond latency, high dynamic range, and low power consumption, making them ideal for real-time robotic perception under challenging conditions such as motion blur, occlusion, and illumination changes. However, despite their advantages, synthetic event-based vision remains largely unexplored in mainstream robotics simulators. This lack of simulation setup hinders the evaluation of event-driven approaches for robotic manipulation and navigation tasks. This work presents an open-source, user-friendly v2e robotics operating system (ROS) package for Gazebo simulation that enables seamless event stream generation from RGB camera feeds. The package is used to investigate event-based robotic policies (ERP) for real-time navigation and manipulation. Two representative scenarios are evaluated: (1) object following with a mobile robot and (2) object detection and grasping with a robotic manipulator. Transformer-based ERPs are trained by behavior cloning and compared to RGB-based counterparts under various operating conditions. Experimental results show that event-guided policies consistently deliver competitive advantages. The results highlight the potential of event-driven perception to improve real-time robotic navigation and manipulation, providing a foundation for broader integration of event cameras into robotic policy learning. The GitHub repo for the dataset and code: https://eventbasedvision.github.io/SEBVS/
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