接触の多い操作のための同変視覚触覚拡散ポリシー
Equivariant Visual-Tactile Diffusion Policy for Contact-Rich Manipulation
視覚と触覚の観測を球面トークンに射影し、同変拡散ポリシーで空間的に一貫した行動を予測することで、接触の多い模倣学習のデータ効率を大幅に向上させるVISTAを提案。
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: Lik Hang Kenny Wong, Yiyao Ma, Xiu-Shen Wei, Zelong Tan, Zhuheng Song, Dongsheng Xie, Kai Chen, Qi Dou
分類: cs.RO, cs.AI
原文アブストラクト
Imitation learning for contact-rich manipulation requires high-quality expert data that is expensive to obtain. This makes learning a sample-efficient policy a key issue. To address this, we propose VISTA, a workspace-level equivariant visuotactile diffusion policy for data-efficient contact-rich imitation learning. VISTA projects visual and tactile observations into spherical tokens, injects tactile contact cues into visual spherical directions through permutation-equivariant spherical fusion, and rotates the fused harmonic representation using the end-effector orientation. The resulting representation conditions an equivariant diffusion policy to predict spatially consistent actions. Extensive experiments in both simulation and real-world robotic settings show that VISTA substantially improves data efficiency over strong visuotactile imitation learning baselines. Project website: https://vista-paper.github.io/