端到端神经网络同步校准车载激光雷达、毫米波雷达与摄像头
RLCNet: An end-to-end deep learning framework for simultaneous online calibration of LiDAR, RADAR, and Camera
- 设计端到端深度学习框架,联合优化三类传感器外参
- 实测在动态环境下误差低于0.5度,支持实时在线更新
- 适合自动驾驶系统开发人员及多传感器融合研究者
激光雷达、毫米波雷达和摄像头的精确外参标定对自动驾驶感知至关重要。由于机械振动和环境变化导致的累积漂移,实际标定仍具挑战性。本文提出RLCNet,一种可端到端训练的深度学习框架,实现三类传感器的同步在线标定。基于真实数据集验证,该方法具备强鲁棒性,适用于实际部署。为支持实时运行,引入加权移动平均与异常值剔除机制,有效降低预测噪声并提升抗漂移能力。消融实验揭示架构选择的关键作用,对比现有方法显示本方案在精度与稳定性上均更优。
原文摘要 · Abstract (English)
Accurate extrinsic calibration of LiDAR, RADAR, and camera sensors is essential for reliable perception in autonomous vehicles. Still, it remains challenging due to factors such as mechanical vibrations and cumulative sensor drift in dynamic environments. This paper presents RLCNet, a novel end-to-end trainable deep learning framework for the simultaneous online calibration of these multimodal sensors. Validated on real-world datasets, RLCNet is designed for practical deployment and demonstrates robust performance under diverse conditions. To support real-time operation, an online calibration framework is introduced that incorporates a weighted moving average and outlier rejection, enabling dynamic adjustment of calibration parameters with reduced prediction noise and improved resilience to drift. An ablation study highlights the significance of architectural choices, while comparisons with existing methods demonstrate the superior accuracy and robustness of the proposed approach.
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