知覚行動基盤モデル：人間の動作プリエントをロボット中心の地形に適応させる
Perceptive Behavior Foundation Model: Adapting Human Motion Priors to Robot-Centric Terrain
人間の動作データを基盤としたヒューマノイド制御モデルを、ロボットの周囲地形に適応させるフレームワークを提案。地形に合わせた参照動作を合成し、教師-学生学習で実ロボットに展開する。
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著者: Zifan Wang, Yizhao Li, Teli Ma, Qiang Zhang, Yudong Fan, Hao Xu, Shuo Yang, Junwei Liang
分類: cs.RO
原文アブストラクト
Humanoid behavior foundation models aim to acquire reusable whole-body control policies from broad human motion priors, enabling a single controller to produce diverse and expressive behaviors. However, existing motion-centric foundation policies largely assume that the reference motion is already physically compatible with the robot's surroundings. This assumption breaks when the demonstrator, operator, and robot inhabit different environments: a human motion may specify the intended behavior, but not the footholds, clearance, body height, or contact timing required by the robot's local terrain. We introduce \emph{Perceptive Behavior Foundation Model} (Perceptive BFM), a terrain-aware humanoid control framework that grounds human motion priors in robot-centric perception. The model preserves raw kinematic motion references as the behavioral interface, while using local terrain observations to adapt contacts, posture, and timing. To provide scalable terrain supervision, we develop \emph{terrain-conformal reference synthesis} (TCRS), which converts locomotion-oriented human motion clips into terrain-consistent references through contact-aware foothold construction, foot-geometry-aware swing optimization, support-aware root reconstruction, collision repair, and multi-point inverse kinematics. We then train a blind adapted-reference teacher and transfer its terrain-conformal behavior to a deployed raw-reference student through target-frame action alignment. The student is an identity-gated Transformer tracker whose terrain features enter through residual pathways initialized to preserve the motion-tracking prior and trained to produce local corrections only when needed.
