CLOSER: 物体ゴールナビゲーションのための証拠に基づく能動的視覚検証
CLOSER: Evidence-Aware Active Visual Verification for Embodied Object-Goal Navigation
物体検出の誤認による誤停止を防ぐため、VLMによる不確実性ラベリングと多視点の証拠統合、必要なら拡散ポリシーで候補に接近して再観測する能動的検証フレームワークを提案し、ObjectNavの成功率を改善した。
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?
※ AIが要旨から生成した要約です。正確性は原文をご確認ください。
著者: Pengying Wu, Mingye Jiang, Yunze Hu, Zhejia Wen, Kangjie Zhou, Zongru Yang, Zhe Peng, Chang Liu
分類: cs.CV, cs.RO
原文アブストラクト
Object-goal navigation (ObjectNav) requires an embodied agent to find an instance of a specified category in an unseen environment and stop near it. The agent typically relies on an object detector but must judge online from a limited egocentric video stream, sometimes a single frame, whether a detected candidate is the target. Detectors often confidently mistake similar objects, such as a sofa for a bed, and stopping at a false positive fails the episode. Prevailing systems also approach candidates greedily, leaving them occluded or partially observed. We present CLOSER, an evidence-aware active verification framework that treats stopping as closed-loop evidence acquisition, coupling vision-language model (VLM) verification with active perception. CLOSER fine-tunes an open-source VLM to label each view of a candidate tracked across frames as target, non-target, or uncertain, selects complementary views with an embedding-based diversity gate, and fuses their per-view probabilities with a lightweight network. If the fused judgment remains uncertain, a diffusion policy drives the agent toward the candidate using only the tracked mask and depth until the decision becomes decisive. CLOSER runs locally and plugs into existing ObjectNav systems without retraining them. On Gibson and Habitat-Matterport 3D, it raises average success rate by 3.6 points and success weighted by path length by 2.0 points, showing that verifying evidence before committing improves embodied navigation.
関連論文
- StopWatch: 物体ゴールナビゲーションのためのゴールグラウンディング物体ゴールナビゲーション
- オープンワールド物体ゴールナビゲーションのためのオープンシーングラフ物体ゴールナビゲーション
- Dense CLIPによるセマンティックマップの汎化で実現するオープンボキャブラリ物体ゴールナビゲーション物体ゴールナビゲーション
- 意味的手がかりによる距離予測で未知環境の物体へナビゲーション物体ゴールナビゲーション