UniLoop:検索から幾何検証・相対姿勢推定までを統合したループ閉じ込め検出
UniLoop: Unified Loop Closure Detection from Retrieval to Geometric Verification and Relative Pose Estimation
事前学習済み幾何基盤モデルの階層表現を再利用し、検索・検証・相対姿勢推定を一つの枠組みで行うループ閉じ込め検出法を提案。冗長な計算を削減しつつ精度とロバスト性を向上させた。
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著者: Jingwen Yu, Pengyu Wang, Jin Wu, Weinan Chen, Ping Tan, Hong Zhang
分類: cs.RO, cs.CV
原文アブストラクト
Loop closure detection conventionally cascades separate models for global retrieval, geometric verification, and relative pose estimation, leading to redundant computation and disconnected visual representations. We propose UniLoop, a unified framework that reuses the hierarchical representations of the pretrained geometric foundation model throughout this pipeline. A shared image encoder produces features for compact global descriptors; the same features are passed to the cross-view decoder for pairwise verification; and the original geometric predictions provide relative camera constraints for pose-graph optimization. Experiments on place recognition, loop verification, and relative pose estimation show that UniLoop improves loop-closure robustness and accuracy while reducing redundant backbone computation relative to modular pipelines. UniLoop achieves the best Recall@10 on MSLS (96.6) and Pitts30k (99.3) among the compared methods, while its verification branch reaches 95.63 AP and 96.29 ROC-AUC, surpassing the existing geometric verification baselines.
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