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arXiv 2603.02481cs.CV
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ModalPatch: 一种插拔式模块,用于在模态缺失情况下鲁棒的多模态3D目标检测

ModalPatch: A Plug-and-Play Module for Robust Multi-Modal 3D Object Detection under Modality Drop

University of Alberta, Canada(阿尔伯塔大学);The University of Tokyo, Japan(东京大学)

Shuangzhi Li, Lei Ma, Xingyu Li

AI总结:

ModalPatch是一种插拔式模块,通过利用传感器数据的时间特性实现感知连续性,提升多模态3D目标检测在模态缺失情况下的鲁棒性和准确性。

摘要:

多模态3D目标检测对于自动驾驶至关重要,整合了互补的传感器,如激光雷达和摄像头。然而,其实际可靠性受到瞬时数据中断和缺失的挑战,其中模态可能由于硬件故障、恶劣天气或遮挡而暂时缺失。这提出了一个关键风险,尤其是在同时模态缺失的情况下,车辆会暂时失明。为了解决这个问题,我们引入了ModalPatch,这是第一个插拔式模块,旨在在任意模态缺失场景下实现鲁棒检测。无需要求架构更改或重新训练,ModalPatch可以无缝集成到各种检测框架中。技术上,ModalPatch利用传感器数据的时间特性实现感知连续性,使用基于历史的模块来预测和补偿暂时不可用的特征。为了提高预测特征的保真度,我们进一步引入了不确定性引导的跨模态融合策略,该策略动态估计补偿特征的可靠性,抑制偏置信号同时强化信息性信号。广泛的实验表明,ModalPatch在多样化的模态缺失条件下,一致地提高了最先进的3D目标检测器的鲁棒性和准确性。

英文摘要:

Multi-modal 3D object detection is pivotal for autonomous driving, integrating complementary sensors like LiDAR and cameras. However, its real-world reliability is challenged by transient data interruptions and missing, where modalities can momentarily drop due to hardware glitches, adverse weather, or occlusions. This poses a critical risk, especially during a simultaneous modality drop, where the vehicle is momentarily blind. To address this problem, we introduce ModalPatch, the first plug-and-play module designed to enable robust detection under arbitrary modality-drop scenarios. Without requiring architectural changes or retraining, ModalPatch can be seamlessly integrated into diverse detection frameworks. Technically, ModalPatch leverages the temporal nature of sensor data for perceptual continuity, using a history-based module to predict and compensate for transiently unavailable features. To improve the fidelity of the predicted features, we further introduce an uncertainty-guided cross-modality fusion strategy that dynamically estimates the reliability of compensated features, suppressing biased signals while reinforcing informative ones. Extensive experiments show that ModalPatch consistently enhances both robustness and accuracy of state-of-the-art 3D object detectors under diverse modality-drop conditions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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