推論時シミュレータ・インザ・ループ精緻化による堅牢な布操作の実現
Enabling Robust Cloth Manipulation via Inference-Time Simulator-in-the-Loop Refinement
単一RGB画像からの実世界布操作を、シミュレータを推論時に用いて軌道を精緻化する手法で実現し、成功率と堅牢性を向上させた。
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？
3. 技術・手法の肝は？
4. どうやって有効だと検証した？
5. 議論はある？
6. 次に読むべき論文は？
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著者: Xin Liu, Yulin Li, Ziming Li, Pengyu Jing, Zhenhao Huang, Bingyang Zhou, Ziqiu Zeng, Siyuan Luo, Chenkun Qi, Fan Shi
分類: cs.RO
原文アブストラクト
Simulator-in-the-loop optimization offers a promising inference-time mechanism for robot manipulation. It uses a physical simulator as a backend rollout engine to evaluate candidate trajectories in parallel and refine nominal actions online, a paradigm proven effective in rigid-body manipulation where state and contact are relatively tractable. We bring this paradigm to real-world cloth manipulation from a single RGB input through three pillars. (i) We design a scalable synthetic-data generation and inference-time rollout pipeline built on FLASH, a deformable-object simulator that provides a practical balance among physical fidelity, numerical stability, and rollout efficiency. (ii) We develop a real-to-sim module, trained purely on synthetic data, that maps a single RGB observation to simulation-compatible cloth state by fusing pretrained visual features with learnable canonical tokens. (iii) We perform online planning by coupling a sparse-mesh rollout backend with prior-guided MPPI, anchored at an offline-distilled policy trajectory, preserving manipulation-relevant deformation and contact while enabling sufficient parallel rollout batches. Real-robot experiments show higher success rates and stronger robustness than baseline methods.
