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arXiv 2007.03778cs.CVcs.RO
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基于视觉和触觉的三维形状重建

3D Shape Reconstruction from Vision and Touch

Facebook AI Research(Facebook人工智能研究院);McGill University(麦吉尔大学);University of California, Berkeley(加州大学伯克利分校)

Edward J. Smith, Roberto Calandra, Adriana Romero, Georgia Gkioxari, David Meger, Jitendra Malik, Michal Drozdzal

摘要:

当一个蹒跚学步的孩子看到一个新玩具时,他们的本能行为是把它捡起来,并用他们的手和眼睛一起检查它,清楚地搜索它的表面,以正确地理解他们在玩什么。在这里的任何情况下,触摸提供高保真的本地化信息,而视觉提供互补的全局上下文。然而,在3D形状重建中,视觉和触觉方式的互补融合仍然在很大程度上未被探索。在本文中,我们研究了这个问题,并提出了一个有效的基于图表的方法来多模态形状理解,鼓励类似的融合视觉和触摸信息。要做到这一点,我们引入了一个数据集的模拟触摸和视觉信号之间的互动机器人手和一个大阵列的3D对象。我们的研究结果表明,(1)利用视觉和触摸信号始终提高单一模态基线;(2)我们的方法优于其他模态融合方法,并从所提出的基于图表的结构中获益匪浅;(3)构建质量随着提供的抓握次数而增加;以及(4)触摸信息不仅增强了触摸部位处的重建,而且还外推到其局部邻域。

英文摘要:

When a toddler is presented a new toy, their instinctual behaviour is to pick it upand inspect it with their hand and eyes in tandem, clearly searching over its surface to properly understand what they are playing with. At any instance here, touch provides high fidelity localized information while vision provides complementary global context. However, in 3D shape reconstruction, the complementary fusion of visual and haptic modalities remains largely unexplored. In this paper, we study this problem and present an effective chart-based approach to multi-modal shape understanding which encourages a similar fusion vision and touch information.To do so, we introduce a dataset of simulated touch and vision signals from the interaction between a robotic hand and a large array of 3D objects. Our results show that (1) leveraging both vision and touch signals consistently improves single-modality baselines; (2) our approach outperforms alternative modality fusion methods and strongly benefits from the proposed chart-based structure; (3) there construction quality increases with the number of grasps provided; and (4) the touch information not only enhances the reconstruction at the touch site but also extrapolates to its local neighborhood.

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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