FUNCTO: Function-Centric One-Shot Imitation Learning for Tool Manipulation

• URL: http://arxiv.org/abs/2502.11744v1
• Date: Mon, 17 Feb 2025 12:34:42 GMT
• Title: FUNCTO: Function-Centric One-Shot Imitation Learning for Tool Manipulation
• Authors: Chao Tang, Anxing Xiao, Yuhong Deng, Tianrun Hu, Wenlong Dong, Hanbo Zhang, David Hsu, Hong Zhang,
• Abstract summary: FUNCTO is an OSIL method that establishes function-centric correspondences with a 3D functional keypoint representation. We evaluate FUNCTO against exiting modular OSIL methods and end-to-end behavioral cloning methods.
• Score: 18.953496415412335
• License:
• Abstract: Learning tool use from a single human demonstration video offers a highly intuitive and efficient approach to robot teaching. While humans can effortlessly generalize a demonstrated tool manipulation skill to diverse tools that support the same function (e.g., pouring with a mug versus a teapot), current one-shot imitation learning (OSIL) methods struggle to achieve this. A key challenge lies in establishing functional correspondences between demonstration and test tools, considering significant geometric variations among tools with the same function (i.e., intra-function variations). To address this challenge, we propose FUNCTO (Function-Centric OSIL for Tool Manipulation), an OSIL method that establishes function-centric correspondences with a 3D functional keypoint representation, enabling robots to generalize tool manipulation skills from a single human demonstration video to novel tools with the same function despite significant intra-function variations. With this formulation, we factorize FUNCTO into three stages: (1) functional keypoint extraction, (2) function-centric correspondence establishment, and (3) functional keypoint-based action planning. We evaluate FUNCTO against exiting modular OSIL methods and end-to-end behavioral cloning methods through real-robot experiments on diverse tool manipulation tasks. The results demonstrate the superiority of FUNCTO when generalizing to novel tools with intra-function geometric variations. More details are available at https://sites.google.com/view/functo.

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