PIVOT: 知覚を考慮した独立視点のオンライン最適化
PIVOT: Perception-aware Independent Viewpoint Online Optimization
ジンバルカメラやMEMS LiDARなど向きを独立制御できるセンサ向けに、移動軌跡に沿って視点方向をオンラインで最適化し特徴の見えやすさを最大化する軽量手法を提案。
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著者: Yuyang Chen, Shekoufeh Sadeghi, Charuvahan Adhivarahan, Elton Lemos, Chen Wang, Sanjeev J. Koppal, Karthik Dantu
分類: cs.RO
原文アブストラクト
A fundamental assumption in robotic perception is that the sensor's field of view (FoV) is fixed relative to the robot body. Motion-decoupled sensors, such as gimbal-mounted cameras and MEMS-based LiDARs, instead allow sensing direction to be controlled independently at runtime. This freedom creates a computational challenge: efficiently selecting useful viewing directions online in feature-dense environments. We propose PIVOT, a lightweight iterative method that optimizes sensor viewing direction along a fixed translation trajectory to maximize feature visibility. Under a conical FoV model, visibility depends only on the optical axis, yielding a two-degree-of-freedom optimization on the viewing sphere $S^2$. Coordinate-free $SO(3)$ exponential-map updates enable efficient continuous optimization without explicit angular parameterizations or exhaustive viewing-sphere search. Monte Carlo evaluations retain 98.1--99.6% of brute-force visibility with a 76--85x speedup. Photorealistic simulation and real-world experiments further demonstrate improved visual localization robustness and practical viewpoint control on a quadruped robot.