论文标题

密集的人群流动道路计划

Dense Crowd Flow-Informed Path Planning

论文作者

Pruc, Emily, Zilberstein, Shlomo, Biswas, Joydeep

论文摘要

每当将机器人放置在包含人类的环境中时,行人和机器人的舒适度都是最高的。对于行人 - 诺瓦雷移动机器人,这种对安全性的渴望导致了冻结机器人问题,在那里,机器人面临着大型动态障碍(例如一群行人人群)的机器人将确定所有前进导航不安全,从而导致机器人停止。为了以一种社会符合社会的方式导航,同时避免了冻结机器人问题,我们感兴趣地了解在拥挤的场景中行人的流动。通过将人群中的行人视为人群本身移动的粒子,我们可以将系统建模为依赖时间的流场。从这个流场开始,我们可以提取不同的流量段,以反映从人群中出现的运动模式。然后,可以在移动机器人的控制和导航期间考虑这些运动模式,从而使其可以在人群的流中安全地移动,从而到达流量内或以上的所需位置。 我们将流场提取与离散的启发式搜索相结合,以创建流动性路径计划(FIPP)。我们提供的经验结果表明,与轨迹滚动的本地路径计划者相比,使用FIPP的机器人不仅能够更快地实现其目标,而且还显示出比在模拟和真实机器人中使用传统技术的机器人更适合社会化的。

Both pedestrian and robot comfort are of the highest priority whenever a robot is placed in an environment containing human beings. In the case of pedestrian-unaware mobile robots this desire for safety leads to the freezing robot problem, where a robot confronted with a large dynamic group of obstacles (such as a crowd of pedestrians) would determine all forward navigation unsafe causing the robot to stop in place. In order to navigate in a socially compliant manner while avoiding the freezing robot problem we are interested in understanding the flow of pedestrians in crowded scenarios. By treating the pedestrians in the crowd as particles moved along by the crowd itself we can model the system as a time dependent flow field. From this flow field we can extract different flow segments that reflect the motion patterns emerging from the crowd. These motion patterns can then be accounted for during the control and navigation of a mobile robot allowing it to move safely within the flow of the crowd to reach a desired location within or beyond the flow. We combine flow-field extraction with a discrete heuristic search to create Flow-Informed path planning (FIPP). We provide empirical results showing that when compared against a trajectory-rollout local path planner, a robot using FIPP was able not only to reach its goal more quickly but also was shown to be more socially compliant than a robot using traditional techniques both in simulation and on real robots.

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