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arXiv 2202.13604cs.ROcs.AI
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从人类演示视频中学习可推广的任务表示学习:一种几何方法

Generalizable task representation learning from human demonstration videos: a geometric approach

University of Alberta(阿尔伯塔大学)

Jun Jin, Martin Jagersand

摘要:

我们研究了从人类演示视频中学习可推广任务的问题,而无需对机器人进行额外的训练或预先记录的机器人动作。给定一组展示具有不同对象/工具(分类对象)的任务的人类演示视频,我们的目标是学习视觉观察的表示,该表示概括为分类对象并实现有效的控制器设计。我们建议将几何任务结构引入到表示学习问题中,该问题对来自人类演示视频的任务规范进行几何编码,并且通过在分类对象之间建立任务规范对应来实现泛化。具体来说,我们提出了CoVGS-IL,它使用一个图形结构的任务函数来学习结构约束下的任务表示。我们的方法,使任务泛化,从不同的对象,其内部连接关系定义在几何约束相同的任务选择几何特征。然后,使用未校准的视觉伺服(UVS)将学习到的任务表示转移到机器人控制器;因此,无需额外的机器人训练或预先记录的机器人运动。

英文摘要:

We study the problem of generalizable task learning from human demonstration videos without extra training on the robot or pre-recorded robot motions. Given a set of human demonstration videos showing a task with different objects/tools (categorical objects), we aim to learn a representation of visual observation that generalizes to categorical objects and enables efficient controller design. We propose to introduce a geometric task structure to the representation learning problem that geometrically encodes the task specification from human demonstration videos, and that enables generalization by building task specification correspondence between categorical objects. Specifically, we propose CoVGS-IL, which uses a graph-structured task function to learn task representations under structural constraints. Our method enables task generalization by selecting geometric features from different objects whose inner connection relationships define the same task in geometric constraints. The learned task representation is then transferred to a robot controller using uncalibrated visual servoing (UVS); thus, the need for extra robot training or pre-recorded robot motions is removed.

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