FreqNav: 物体指向型空中視覚言語ナビゲーションのための段階的周波数ルーティング
FreqNav: Stage-Wise Frequency Routing for Object-Oriented Aerial Vision-Language Navigation
空中VLNタスクにおいて、ナビゲーション段階に応じて視覚トークンの周波数成分を動的に再配分する軽量な適応認識フレームワークFreqNavを提案し、ベースラインを上回る性能と約3倍の推論高速化を実現した。
詳しい要約
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2. 先行研究と比べてどこがすごい?
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著者: Yin Tang, Jiawei Ma, Jiahao Li, Hao Zhang, Zhemin Sun, Jianqiao Sun, Deyu Zhang
分類: cs.RO
原文アブストラクト
Object-oriented aerial vision-and-language navigation (VLN) requires searching for a described target and landing on it precisely, under long-horizon and closed-loop control. Guided by a target-descriptive instruction during navigation, perceptual priorities dynamically evolve: early-stage exploration prioritizes low-frequency spatial layout, and then shifts to high-frequency target details. Existing VLN methods model the varying perceptual requirements across navigation stages with identical visual tokens, leading to interference from irrelevant objects and background clutter. To this end, we therefore formulate long-horizon aerial navigation as a frequencypreference shift from spatial structure to local detail and propose FreqNav, a lightweight frequency-routing adaptive perception framework. Under a fixed computational budget, FreqNav dynamically reallocates visual tokens across frequency components according to the current navigation stage. A Frequency Token Router selects stage-relevant visual representations from dual-view observations, while a Phase-dependent Grounding Module anchors visual evidence through explicit supervision. A Diffusion Transformer then predicts smooth trajectories for continuous control. Experiments show that FreqNav outperforms strong baselines while achieving approximately 3x faster inference. Real-world deployment further demonstrates its effectiveness, efficiency, and practical potential for long-horizon aerial autonomy.
