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arXiv 1710.02418cs.RO
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利用平均曲率物体模型规划高质量抓取

Planning High-Quality Grasps using Mean Curvature Object Skeletons

Nikolaus Vahrenkamp, Eduard Koch, Mirko Waechter, Tamim Asfour

摘要:

在这项工作中,我们提出了一个把握规划器,它集成了两个信息源,以产生强大的掌握机器人手。首先,通过建立平均曲率骨架并相应地分割对象来合并对象模型的拓扑信息,以识别适合于应用抓取的对象区域。其次,局部表面结构的调查,以构建可行的和强大的抓取姿势对齐的手根据当地的目标形状。我们展示了如何使用这些信息来获得不同的抓取策略,这也可以区分精度和功率的把握。我们将该方法应用于各种各样的对象模型的KIT和YCB现实世界的对象模型数据库和评估的方法与几个机器人的手。实验结果表明,该抓取规划器能够以高效的方式自主生成高质量的抓取。此外,我们评估如何强大的计划掌握对手的定位错误,因为它们发生在现实世界中的应用,由于感知和致动不准确。评估表明,大多数生成的把握是高质量的,因为他们可以成功地应用,即使手是不准确的定位。

英文摘要:

In this work, we present a grasp planner which integrates two sources of information to generate robust grasps for a robotic hand. First, the topological information of the object model is incorporated by building the mean curvature skeleton and segmenting the object accordingly in order to identify object regions which are suitable for applying a grasp. Second, the local surface structure is investigated to construct feasible and robust grasping poses by aligning the hand according to the local object shape. We show how this information can be used to derive different grasping strategies, which also allows to distinguish between precision and power grasps. We applied the approach to a wide variety of object models of the KIT and the YCB real-world object model databases and evaluated the approach with several robotic hands. The results show that the skeleton-based grasp planner is capable to autonomously generate high-quality grasps in an efficient manner. In addition, we evaluate how robust the planned grasps are against hand positioning errors as they occur in real-world applications due to perception and actuation inaccuracies. The evaluation shows that the majority of the generated grasps are of high quality since they can be successfully applied even when the hand is not exactly positioned.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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