Z-FLoc: 幾何プリミティブによるゼロショット間取り図位置推定
Z-FLoc: Zero-Shot Floorplan Localization via Geometric Primitives
カメラ画像と間取り図の見た目の差を、直線や円などの幾何プリミティブで橋渡しし、再学習なしで未知環境に適用できるゼロショットの位置推定手法を提案した。
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?
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5. 議論はある?
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著者: Ayumi Umemura, Toshinori Kuwahara, Marc Pollefeys, Daniel Barath
分類: cs.CV, cs.RO
原文アブストラクト
Visual localization -- estimating a camera pose within a pre-existing map -- is a fundamental problem in computer vision. Floorplans are an attractive map representation: they are readily available for most buildings, compact, and inherently invariant to visual appearance changes. However, bridging the severe domain gap between camera observations and floorplan geometry remains challenging. Existing methods address this gap through data-driven learning, yet they require large-scale training data and environment-specific retraining, limiting their practical deployment. We propose a zero-shot floorplan localization method that generalizes to novel environments without any retraining. Our key insight is that dominant geometric primitives -- lines and circles -- are ubiquitous in human-made environments and provide appearance-invariant structural constraints. We extract these primitives from a bird's-eye-view (BEV) projection of monocular 3D reconstructions and match them to the floorplan via dedicated minimal solvers within a robust estimation framework. Experiments on both simulated and real-world datasets show that our approach outperforms state-of-the-art learning-based methods on unseen environments, while using a single fixed set of hyperparameters across all experiments. The source code will be made publicly available.
