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arXiv 2210.01433cs.RO
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从单帧遮挡点云中学习估计可变形线性物体的3-D状态

Learning to Estimate 3-D States of Deformable Linear Objects from Single-Frame Occluded Point Clouds

Tsinghua University(清华大学);Beijing Academy of Artificial Intelligence(北京人工智能研究院)

Kangchen Lv, Mingrui Yu, Yifan Pu, Xin Jiang, Gao Huang, Xiang Li

AI总结:

针对可变形线性物体状态估计受高维状态空间、遮挡和噪声干扰的难题,提出双分支网络结合融合模块的数据驱动方法,可从单帧遮挡点云得到高精度估计结果,适用于真实机器人操作。

摘要:

准确、鲁棒地估计可变形线性物体(DLOs,如绳索和电线)的状态,对DLO操作及其他应用至关重要。但由于状态空间的高维度、频繁的遮挡和噪声问题,这仍是一个具有挑战性的开放性难题。本文聚焦于采用数据驱动方法,学习在存在遮挡的情况下从单帧点云中鲁棒估计DLO的状态。我们提出了一种新颖的双分支网络架构,分别利用输入点云的全局和局部信息,并设计了一个融合模块以有效结合两种方法的优势。仿真和真实世界实验结果表明,即使在点云被严重遮挡的情况下,我们的方法也能生成全局平滑、局部精确的DLO状态估计结果,可直接应用于三维空间中DLO的真实机器人操作。

英文摘要:

Accurately and robustly estimating the state of deformable linear objects (DLOs), such as ropes and wires, is crucial for DLO manipulation and other applications. However, it remains a challenging open issue due to the high dimensionality of the state space, frequent occlusions, and noises. This paper focuses on learning to robustly estimate the states of DLOs from single-frame point clouds in the presence of occlusions using a data-driven method. We propose a novel two-branch network architecture to exploit global and local information of input point cloud respectively and design a fusion module to effectively leverage the advantages of both methods. Simulation and real-world experimental results demonstrate that our method can generate globally smooth and locally precise DLO state estimation results even with heavily occluded point clouds, which can be directly applied to real-world robotic manipulation of DLOs in 3-D space.

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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