ロボット操作のための効率的な視覚表現を学習する構造的潜在点
Learning Structural Latent Points for Efficient Visual Representations in Robotic Manipulation
3D認識と操作のための事前学習フレームワークを提案し、点群オートエンコーダの潜在空間に点単位の変分オートエンコーダを挿入して、暗黙的表現の表現力と明示的表現の構造的先行知識を組み合わせたハイブリッド表現「構造的潜在点」を学習する。
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？
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: Yicheng Jiang, Jiaxu Wang, Junhao He, Zesen Gan, Junhao Li, Qiang Zhang, Jingkai Sun, Jiahang Cao, Mingyuan Sun, Xiangyu Yue, Qiming Shao
分類: cs.RO, cs.AI
原文アブストラクト
Current 3D-aware pretraining methods for embodied perception and manipulation are largely built on differentiable rendering frameworks, producing either fully implicit neural fields or fully explicit geometric primitives. Implicit representations, while expressive, lack explicit structural cues, whereas explicit ones preserve geometry but suffer from resolution limits and weak generalization. To address these limitations, we propose a novel pretraining framework that learns a hybrid representation-structural latent points. Specifically, we insert a point-wise latent variational autoencoder into the latent space of a point-cloud autoencoder, jointly regularizing point-wise features and coordinates toward a Gaussian prior. The resulting compact latent preserves coarse structural tendencies, which do not encode precise geometry but capture richer rough shape and semantic information, effectively combining the expressiveness of implicit representations with the structural priors of explicit ones. In addition, informed by shared design choices in prior work, we develop a streamlined, efficient 3DGS-based rendering pipeline that is deliberately kept lightweight, improving efficiency while leaving greater representational capacity to the front-end latent module. Extensive evaluations on RLBench, ManiSkill2, and a real-robot platform demonstrate consistent gains in task success, sample efficiency, and robustness to viewpoint and scene variations over strong baselines. Ablation studies further confirm that each component of our framework is critical to overall performance.
