NeuralGrasps: Learning Implicit Representations for Grasps of Multiple Robotic Hands

We introduce a neural implicit representation for grasps of objects from multiple robotic hands. Different grasps across multiple robotic hands are encoded into a shared latent space. Each latent vector is learned to decode to the 3D shape of an object and the 3D shape of a robotic hand in a graspin...

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Bibliographic Details
Published inarXiv.org
Main Authors Khargonkar, Ninad, Song, Neil, Xu, Zesheng, Prabhakaran, Balakrishnan, Yu, Xiang
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.07.2022
Subjects
End effectors
Grasping (robotics)
Grippers
Hand (anatomy)
Hands
Optimization
Pose estimation
Representations
Robotics
Robots
Similarity
Skills
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Summary:We introduce a neural implicit representation for grasps of objects from multiple robotic hands. Different grasps across multiple robotic hands are encoded into a shared latent space. Each latent vector is learned to decode to the 3D shape of an object and the 3D shape of a robotic hand in a grasping pose in terms of the signed distance functions of the two 3D shapes. In addition, the distance metric in the latent space is learned to preserve the similarity between grasps across different robotic hands, where the similarity of grasps is defined according to contact regions of the robotic hands. This property enables our method to transfer grasps between different grippers including a human hand, and grasp transfer has the potential to share grasping skills between robots and enable robots to learn grasping skills from humans. Furthermore, the encoded signed distance functions of objects and grasps in our implicit representation can be used for 6D object pose estimation with grasping contact optimization from partial point clouds, which enables robotic grasping in the real world.
ISSN:2331-8422