人間の動作を事前知識として活用したロボット動作の遷移生成
Robot Motion Transition with Human Motion Prior
独立に取得したヒューマノイド動作を人間の動作空間上で整列させ、生成モデルで遷移を補間して連続動作列を作るフレームワークSTAMPを提案し、Unitree G1とROBOTIS K1で実機検証した。
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著者: Taehyun Byun, Taemoon Jeong, Yoonbyung Chai, Woojin Wie, Insu Park, Kyungjae Lee, Sungjoon Choi
分類: cs.RO
原文アブストラクト
Humanoid motion-tracking policies can reproduce diverse behaviors, yet connecting independently acquired motions into a continuous sequence remains challenging. Interpolation connects boundary poses without considering whether their relative position, heading, and timing provide suitable conditions for a transition. A generative motion prior can produce richer motion, but poorly arranged boundaries may cause it to generate excessive locomotion, turning, or another unintended action. We present Spatio-Temporal Alignment with a Motion Prior (STAMP), a framework for connecting independently acquired humanoid motions through a Robot-to-Human-to-Robot process. STAMP uses human motion space to draw on rich motion priors and reuse transition knowledge across robot embodiments. Its key component is a learned alignment model that determines the boundary conditions for motion inbetweening. Given the two motions retargeted to a human rig, the alignment model ranks candidate positions, headings, and transition durations for the following motion. A human motion prior generates the transition under the selected alignment. The completed sequence is retargeted to the robot and used as a reference to train a motion-tracking policy. We evaluate the tracking success of the generated transitions on Unitree~G1 and~ROBOTIS K1. Physical robot demonstrations further show that STAMP connects independently acquired motions into long-horizon sequences. Project page: https://childtoy.github.io/STAMP-project