自己教師あり慣性オドメトリ
Self-Supervised Inertial Odometry
短い時間窓ごとのIMU積分を教師として慣性オドメトリモデルを自己教師あり学習し、ポーズグラフ蒸留で改善する手法を提案。正解軌道なしで歩行者・ドローン・四足・ヒューマノイドの6データセットで高精度を達成。
著者: Yuheng Qiu, Yutian Chen, Carlton Cort, Weison Huang, Shibo Zhao, Pieter Abbeel, Rocky Duan, Koushil Sreenath, C. Karen Liu, Carmelo Sferrazza, Junyi Geng, Sebastian Scherer, Guanya Shi
分類: cs.RO
原文アブストラクト
Learning inertial odometry for a new platform usually requires ground-truth trajectories. We show that an inertial odometry model can instead be trained from scratch by a myopic teacher that integrates the IMU over each short window independently, a scheme we call integration self-supervision.Interestingly, although supervised only by short-window velocity changes, the student learns to directly predict velocity, and does so more accurately than its integration teacher. Pose graph distillation then refines the model with sequence-consistent targets from a pose graph over many windows. Training on a new platform therefore no longer requires collecting ground-truth trajectories, but only calibrating the IMU and recording data during normal operation. Across six datasets spanning pedestrians, drones, quadrupeds, and a humanoid, the same recipe with no velocity or position labels trains models that come within $0.07$~m/s average velocity error of a same-architecture supervised baseline.