アーム認識型誘導による器用な把持生成:アーム非依存把持モデルの活用
Arm-Aware Guided Dexterous Grasp Generation with Arm-Agnostic Grasp Models
事前学習済みのアーム非依存把持モデルを推論時にアーム情報と環境情報で誘導し、アーム制約を考慮した器用な把持を高確率で生成するフレームワークを提案した。
詳しい要約
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著者: Yongyi Jia, Yongpeng Jiang, Kangchen Lv, Yi Ren, Mingrui Yu, Xiang Li
分類: cs.RO
原文アブストラクト
Dexterous grasp generation that considers arm-related constraints is crucial in real-world scenarios involving arm environment collision avoidance, workspace boundary grasps, and consecutive grasping. Existing hand-centric grasp models, which primarily focus on the floating hand's pose, are insufficient for such cases. Conventional arm-aware methods either rely on rejection sampling to discard infeasible samples or require retraining on arm-specific data, leading to low sample efficiency under adverse conditions or limited generalization across different robots and environments. To overcome these limitations, this letter presents an arm-aware dexterous grasp generation framework that leverages pretrained arm-agnostic grasp models while integrating arm and environmental information only at inference time. Specifically, we formulate arm-aware constrained grasp generation as a joint optimization of hand pose and arm configuration, and derive closed-form gradients for arm-related constraints. Assuming the hand pose distribution is represented by a diffusion model, we prove that gradient-based optimization is equivalent to guided diffusion sampling, steering near-feasible samples toward the feasible region. Through comprehensive evaluation involving 10k objects across 6 scenarios, we demonstrate that the proposed framework generates feasible grasps in highly constrained settings with significantly higher probability, highlighting its advantages in real-world applications. Supplementary materials and appendix are available at https://arm-aware-dexgrasp.github.io/.