高高度ナディア UAV 映像における単眼 SLAM システムの評価
Evaluation of Monocular SLAM Systems on High-Altitude Nadir UAV Footage
単眼 SLAM システムを高高度の真下視映像でベンチマークし、環境や軌道スケールによる性能差を明らかにした。
著者: Gašper Spagnolo, Matej Dobrevski, Danijel Skočaj
分類: cs.RO
原文アブストラクト
Aerial nadir video combines weak geometric constraints with severe perceptual aliasing, making it a difficult regime for monocular SLAM. We benchmark five monocular SLAM systems on local UAV flights, synthetic city-scale imagery, and long-range aerial sequences. To isolate visual performance, we provide no inertial or GNSS aiding. Performance varies strongly with environment and trajectory scale: MASt3R-SLAM achieves the lowest mean horizontal MAE on the five DJI flights (0.53\% of reference path length), whereas no system consistently preserves global trajectory shape on the long GES and ALTO sequences. Overall, DROID-SLAM performs best, averaging 2.88\% of reference path length across completed runs. Vertical position remains poor, and large-area trajectories remain highly distorted despite loop-closure capability. Current monocular SLAM methods are by themselves therefore insufficient for reliable visual-only aerial navigation.