Track2Act: Predicting Point Tracks from Internet Videos enables Diverse Zero-shot Robot Manipulation

• URL: http://arxiv.org/abs/2405.01527v1
• Date: Thu, 2 May 2024 17:56:55 GMT
• Title: Track2Act: Predicting Point Tracks from Internet Videos enables Diverse Zero-shot Robot Manipulation
• Authors: Homanga Bharadhwaj, Roozbeh Mottaghi, Abhinav Gupta, Shubham Tulsiani,
• Abstract summary: Track2Act predicts tracks of how points in an image should move in future time-steps based on a goal. We use these 2D track predictions to infer a sequence of rigid transforms of the object to be manipulated, and obtain robot end-effector poses. We show that this approach of combining scalably learned track prediction with a residual policy enables zero-shot robot manipulation.
• Score: 65.46610405509338
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We seek to learn a generalizable goal-conditioned policy that enables zero-shot robot manipulation: interacting with unseen objects in novel scenes without test-time adaptation. While typical approaches rely on a large amount of demonstration data for such generalization, we propose an approach that leverages web videos to predict plausible interaction plans and learns a task-agnostic transformation to obtain robot actions in the real world. Our framework,Track2Act predicts tracks of how points in an image should move in future time-steps based on a goal, and can be trained with diverse videos on the web including those of humans and robots manipulating everyday objects. We use these 2D track predictions to infer a sequence of rigid transforms of the object to be manipulated, and obtain robot end-effector poses that can be executed in an open-loop manner. We then refine this open-loop plan by predicting residual actions through a closed loop policy trained with a few embodiment-specific demonstrations. We show that this approach of combining scalably learned track prediction with a residual policy requiring minimal in-domain robot-specific data enables zero-shot robot manipulation, and present a wide array of real-world robot manipulation results across unseen tasks, objects, and scenes. https://homangab.github.io/track2act/

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