Equi-RO: 同変ネットワークによる4Dミリ波レーダオドメトリ
Equi-RO: A 4D mmWave Radar Odometry via Equivariant Networks
4Dミリ波レーダのドップラー速度を不変特徴に変換し、同変・不変ネットワークとグラフ構造でフレーム間対応を強化するオドメトリ手法を提案。公開データセットで並進・回転精度を改善。
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著者: Zeyu Han, Shuocheng Yang, Minghan Zhu, Fang Zhang, Shaobing Xu, Maani Ghaffari, Jianqiang Wang
分類: cs.RO, cs.CV
原文アブストラクト
Autonomous vehicles and robots rely on accurate odometry estimation in GPS-denied environments. While LiDARs and cameras struggle under extreme weather, 4D mmWave radar emerges as a robust alternative with all-weather operability and velocity measurement. In this paper, we introduce Equi-RO, an equivariant network-based framework for 4D radar odometry. Our algorithm pre-processes Doppler velocity into invariant node and edge features in the graph, and employs separate networks for equivariant and invariant feature processing. A graph-based architecture enhances feature aggregation in sparse radar data, improving inter-frame correspondence. Experiments on an open-source dataset and a self-collected dataset show Equi-RO outperforms state-of-the-art algorithms in accuracy and robustness. Overall, our method achieves 10.7% and 13.4% relative improvements in translation and rotation accuracy, respectively, compared to the best baseline on the open-source dataset.
