ロボットアシスタント:器用な視覚-言語-行動モデルによる協調タスクの完遂
Robotic Assistant: Completing Collaborative Tasks with Dexterous Vision-Language-Action Models
事前学習済みVLAモデルを人間-ロボット協調に適応させ、意図予測や行動後処理を加えて、ピックアップとパスを組み合わせた長期的な協調動作を実現した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
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著者: Boshi An, Chenyu Yang, Robert Katzschmann
分類: cs.RO
原文アブストラクト
We adapt a pre-trained Vision-Language-Action (VLA) model (Open-VLA) for dexterous human-robot collaboration with minimal language prompting. Our approach adds (i) FiLM conditioning to visual backbones for task-aware perception, (ii) an auxiliary intent head that predicts collaborator hand pose and target cues, and (iii) action-space post-processing that predicts compact deltas (position/rotation) and PCA-reduced finger joints before mapping to full commands. Using a multi-view, teleoperated Franka and Mimic-hand dataset augmented with MediaPipe hand poses, we demonstrate that delta actions are well-behaved and that four principal components explain ~96% of hand-joint variance. Ablations identify action post-processing as the primary performance driver; auxiliary intent helps, FiLM is mixed, and a directional motion loss is detrimental. A real-time stack (~0.3 s latency on one RTX 4090) composes "pick-up" and "pass" into a long-horizon behavior. We surface "trainer overfitting" to specific demonstrators as the key limitation.
