LoD-Loc v3: インスタンスシルエット整合による密集都市での汎用航空位置推定
LoD-Loc v3: Generalized Aerial Localization in Dense Cities using Instance Silhouette Alignment
密集都市環境での航空画像位置推定を、建物のインスタンスセグメンテーションとシルエット整合を用いて高精度化し、大規模データセット生成によりゼロショット汎化を実現した。
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著者: Shuaibang Peng, Juelin Zhu, Xia Li, Kun Yang, Maojun Zhang, Yu Liu, Shen Yan
分類: cs.CV, cs.AI, cs.RO
原文アブストラクト
We present LoD-Loc v3, a novel method for generalized aerial visual localization in dense urban environments. While prior work LoD-Loc v2 achieves localization through semantic building silhouette alignment with low-detail city models, it suffers from two key limitations: poor cross-scene generalization and frequent failure in dense building scenes. Our method addresses these challenges through two key innovations. First, we develop a new synthetic data generation pipeline that produces InsLoD-Loc - the largest instance segmentation dataset for aerial imagery to date, comprising 100k images with precise instance building annotations. This enables trained models to exhibit remarkable zero-shot generalization capability. Second, we reformulate the localization paradigm by shifting from semantic to instance silhouette alignment, which significantly reduces pose estimation ambiguity in dense scenes. Extensive experiments demonstrate that LoD-Loc v3 outperforms existing state-of-the-art (SOTA) baselines, achieving superior performance in both cross-scene and dense urban scenarios with a large margin. The project is available at https://nudt-sawlab.github.io/LoD-Locv3/.
