野生環境の視覚ナビゲーション：事前学習モデルとオンライン自己教師あり学習による高速走行可能性学習
Wild Visual Navigation: Fast Traversability Learning via Pre-Trained Models and Online Self-Supervision
森林や草原などの自然環境で、事前学習済みモデルの特徴量とオンライン自己教師あり学習を組み合わせ、短時間の実地デモから走行可能領域を推定してロボットをナビゲートするシステムを提案した。
著者: Matías Mattamala, Jonas Frey, Piotr Libera, Nived Chebrolu, Georg Martius, Cesar Cadena, Marco Hutter, Maurice Fallon
分類: cs.RO, cs.CV, cs.LG
原文アブストラクト
Natural environments such as forests and grasslands are challenging for robotic navigation because of the false perception of rigid obstacles from high grass, twigs, or bushes. In this work, we present Wild Visual Navigation (WVN), an online self-supervised learning system for visual traversability estimation. The system is able to continuously adapt from a short human demonstration in the field, only using onboard sensing and computing. One of the key ideas to achieve this is the use of high-dimensional features from pre-trained self-supervised models, which implicitly encode semantic information that massively simplifies the learning task. Further, the development of an online scheme for supervision generator enables concurrent training and inference of the learned model in the wild. We demonstrate our approach through diverse real-world deployments in forests, parks, and grasslands. Our system is able to bootstrap the traversable terrain segmentation in less than 5 min of in-field training time, enabling the robot to navigate in complex, previously unseen outdoor terrains. Code: https://bit.ly/498b0CV - Project page:https://bit.ly/3M6nMHH
