DexTransfer

Real World Multi-fingered Dexterous Grasping with Minimal Human Demonstrations

RSS 2022 IL Workshop (Spotlight)

Qiuyu (Zoey) Chen, Karl Van Wyk, Yu-Wei Chao, Wei Yang, Arsalan Mousavian, Abhishek Gupta, Dieter Fox

Abstract: Teaching a multi-fingered dexterous robot to grasp objects in the real world has been a challenging problem due to its high dimensional state and action space. We propose a robot-learning system that can take a small number of human demonstrations and learn to grasp unseen object poses given partially occluded observations. Our system leverages a small motion capture dataset and generates a large dataset with diverse and successful trajectories for a multi-fingered robot gripper. By adding domain randomization, we show that our dataset provides robust grasping trajectories that can be transferred to a policy learner. We train a dexterous grasping policy that takes the point clouds of the object as input and predicts continuous actions to grasp objects from different initial robot states. We evaluate the effectiveness of our system on a 22-DoF floating Allegro Hand in simulation and a 23-DoF Allegro robot hand with a KUKA arm in the real world. The policy learned from our dataset can generalize well on unseen object poses in both simulation and the real world.

RSS_2022_id173.mp4

Results in Simulation:

Results in Real World:

Baselines:

DexTransfer (ours)

Heuristic approach

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