意味的3Dガウススプラッティングによるオープンボキャブラリ移動操作のための身体化マルチモーダル基盤付け
Embodied Multimodal Grounding for Open-Vocabulary Mobile Manipulation via Semantic 3D Gaussian Splatting
家庭内の局所作業空間で、言語・視覚・3Dシーン構造・動作可能性を統合し、オープンボキャブラリの目標物体を少数例で操作するためのフレームワークを提案。能動的なマルチビュー意味的3Dガウススプラッティングと拡散型VLAポリシーを組み合わせ、実ロボット評価で既存手法を上回る成功率を達成した。
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著者: Huosen Ou, Dongni Song, Yuncong Wang, Tao Zhou, Yiding Ji
分類: cs.RO, cs.CV
原文アブストラクト
Embodied mobile manipulation requires language, visual observations, three-dimensional scene structure, and action feasibility to be aligned before execution. We study open-vocabulary target grounding with few-shot manipulation in local household workspaces and present an embodied multimodal grounding framework that integrates active multi-view Semantic 3D Gaussian Splatting (Semantic-3DGS), reachability-aware base positioning, and a diffusion-based vision-language-action policy. A task-driven local Semantic-3DGS serves as a shared interface across active sensing, language-conditioned 3D localization, obstacle-aware scene reasoning, base preparation, and semantic conditioning of the action model. To preserve pretrained action priors, the 3D semantic cues are injected only into the late action-expert blocks. In expanded 50-trial real-robot evaluations against representative vision-language-action (VLA) approaches, the full system achieves 60% long-horizon success compared with 40% for PointVLA and 28% for DexVLA, and reaches 74% success in heavily cluttered manipulation compared with 52% for the single-view variant and 46% for PointVLA. It also maintains 75% success under a 75 cm height shift and eliminates photo-induced false grasps. These results indicate that explicit, refreshable 3D semantic grounding can improve robustness under clutter, occlusion, viewpoint variation, and embodiment constraints.