Towards Feasible Dynamic Grasping: Leveraging Gaussian Process Distance Field, SE(3) Equivariance and Riemannian Mixture Models

Award AK's Picks Embodied AI and Robotics Imitation Learning RC
Workshop de Redes 6G (W6G) 2024
本文提出了一种利用高斯过程距离场(GPDF)、SE(3)等变性和黎曼混合模型实现可行的动态抓取的新方法。我们旨在提高机器人在物体可能移动的动态任务中的抓取能力。所提出的方法结合了物体形状重建、抓取采样和抓取姿态选择,以实现在这种情况下的有效抓取。通过利用GPDF,该方法准确地建模了物体的形状和物理特性,从而实现了精确的抓取规划。SE(3)等变性确保了采样的抓取姿态对物体的姿态是等变的。此外,采用黎曼高斯混合模型来测试可达性,提供了一种可行和适应性强的抓取策略。采样的可行抓取姿态被用作高斯混合模型和高斯过程分别制定的新型任务或关节空间反应控制器的目标。实验结果表明,所提出的方法在生成可行的抓取姿态和在动态环境中成功抓取方面具有有效性。(视频链接:https://www.youtube.com/watch?v=wjIVrwTzTOc&t=70s)
In this paper, we present a novel approach towards feasible dynamic grasping by leveraging Gaussian Process Distance Fields (GPDF), SE(3) equivariance, and Riemannian Mixture Models. We seek to improve the grasping capabilities of robots in dynamic tasks where objects may be moving. The proposed method combines object shape reconstruction, grasp sampling, and grasp pose selection to enable effective grasping in such scenarios. By utilizing GPDF, the approach accurately models the shape and physical properties of objects, allowing for precise grasp planning. SE(3) equivariance ensures that the sampled grasp poses are equivariant to the object's pose. Additionally, Riemannian Gaussian Mixture Models are employed to test reachability, providing a feasible and adaptable grasping strategy. The sampled feasible grasp poses are used as targets for novel task or joint space reactive controllers formulated by Gaussian Mixture Models and Gaussian Processes, respectively. Experimental results demonstrate the effectiveness of the proposed approach in generating feasible grasp poses and successful grasping in dynamic environments. (Video: https://www.youtube.com/watch?v=wjIVrwTzTOc&t=70s)
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