NarrativeFlow: ロボット速度場を用いたフローベース視覚-言語-行動モデル
NarrativeFlow: Flow-Based Vision-Language-Action Model Using Robot Velocity Fields
言語条件付き操作において、ロボットの速度場を連続的なフローとしてモデル化し、フローマッチングで生成する手法を提案。複数ロボットのデータを活用でき、実世界タスクで成功率が向上。
詳しい要約
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著者: Shota Kobayashi, Koki Seno, Daichi Yashima, Komei Sugiura
分類: cs.RO, cs.CV
原文アブストラクト
We focus on language-conditioned flow-based manipulation, where robot flows (robot velocity fields) serve as embodiment-agnostic, motion-centric representations for leveraging data collected from multiple robot platforms. This task is crucial because language-conditioned manipulation is essential for practical robotic systems, yet scaling robot foundation models remains limited by the labor-intensive collection of embodiment-specific data. Existing methods either coarsely approximate robot flows with sparse keypoint displacements, or cannot handle language-conditioned manipulation. To address this limitation, we propose NarrativeFlow, which models robot flows as continuous velocity fields using a flow-matching formulation conditioned on language. Accordingly, NarrativeFlow generates robot flows that are physically consistent with real-world manipulation. To validate NarrativeFlow, we have conducted experiments on standard datasets for language-conditioned manipulation. The experimental results show that NarrativeFlow outperforms representative baseline methods on standard evaluation metrics. Furthermore, through real-world experiments, we show that NarrativeFlow achieves higher success rates than baseline methods across multiple manipulation tasks. The project page is available at https://shota0520.github.io/NarrativeFlow-project-page/