DeformGen: 変形操作ポリシー学習のための動力学に基づくトポロジー拡張
DeformGen: Dynamics-Based Topology Augmentation for Deformable Manipulation Policy Learning
変形物体の操作学習において、物理的に妥当な状態と軌道を生成する動力学ベースのデータ拡張フレームワークを提案した。
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？
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: Zili Lin, Wenyao Zhang, Yuyang Zhang, Zekun Qi, Junyan Lin, Hanxin Zhu, Jiaolong Yang, Zhibo Chen, Yao Mu, Xiaokang Yang, Xin Jin, Wenjun Zeng
分類: cs.RO
原文アブストラクト
Demonstration augmentation is proposed for cost-efficient data acquisition, but existing methods are fundamentally limited in deformable manipulation due to two challenges: (1) the state space is high-dimensional with physics-induced constraints, making valid configurations impossible to reach via low-dimensional pose perturbations; and (2) trajectory transfer is non-equivariant, as material points no longer move rigidly together under deformation. We present DeformGen, a dynamics-based augmentation framework that achieves topological diversity for deformable objects. For the state challenge, DeformGen expands the valid state distribution by applying localized physical disturbances and forward-simulating the dynamics to obtain topology-coherent, physically plausible deformable states. For the trajectory challenge, DeformGen transfers source manipulation trajectories via deformation-field warping, which lifts per-particle displacements into a continuous spatial function to adapt the end-effector trajectory consistently with the deformed geometry. In this way, our method jointly augments the state distribution and its associated manipulation behavior. Experiments on high-fidelity deformable manipulation benchmarks show that DeformGen generally improves policy learning compared with training on the original demonstrations alone and with rigid-style augmentation baselines.
