Prior-SG: 任意構造環境におけるシーングラフのためのタスク・事前知識駆動型領域分割
Prior-SG: Task and Prior Driven Region Segmentation for Scene Graphs in Arbitrarily-Structured Environments
ロボットの探索中に得たRGB-Dセンサ情報を統合し、大規模言語モデルが生成する事前グラフを用いて確率的アライメントによりシーングラフを生成するフレームワークを提案。壁のないオープンプラン環境でも機能的な領域分割を高精度に実現する。
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?
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著者: Giorgio Tonetti, Laurent Kneip, Abel Gawel, Marco Hutter
分類: cs.RO, cs.CV
原文アブストラクト
Hierarchical 3D scene graphs are a promising representation for high-level spatial reasoning in autonomous mobile platforms. However, existing extraction frameworks typically rely on purely local visual clustering or strict geometric heuristics, such as wall-separated rooms, which fail in open-plan or arbitrarily-structured environments. We propose Prior-SG, a task- and prior-driven framework that casts scene graph generation fundamentally as a probabilistic alignment problem. As the robot explores, it continuously aggregates an incoming RGB-D sensor stream into a physically grounded Instance Graph utilizing a multi-scale, open-vocabulary feature fusion strategy. The system then infers the high-level functional semantics of this map through a Maximum A Posteriori (MAP) estimate, guided by a Prior Graph-a logical expectation of the environment's structure and task-relevant vocabulary synthesized dynamically by a Large Language Model. By optimizing a Markov Random Field that fuses heterogeneous experts (visual, geometric, and discrete objects) with these topological priors, the system resolves local perceptual ambiguities. We validate this approach across diverse simulated residential datasets and large, open-plan real-world environments. Prior-SG achieves state-of-the-art semantic region segmentation accuracy compared to recent baselines, robustly delineates distant functional boundaries in the absence of physical walls, and uniquely provides zero-shot ontological flexibility, enabling the robot to entirely restructure its spatial partitioning based on a given high-level task.
関連論文
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- RGBのみを用いた屋内移動ロボットのための能動的3Dシーングラフ生成シーングラフ生成
- オントロジー誘導によるシーングラフ生成:テレプレゼンスロボティクスへの転移学習事例シーングラフ生成
