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多模态解耦与耦合网络用于抗干扰的3D目标检测

Multi-Modal Decouple and Recouple Network for Robust 3D Object Detection

State Key Laboratory of Human-Machine Hybrid Augmented Intelligence, Institute of Artificial Intelligence and Robotics, Xi’an Jiaotong University(人机混合增强智能国家重点实验室,人工智能与机器人研究院,西安交通大学);Intelligent Transportation Thrust of the Systems Hub, The Hong Kong University of Science and Technology (Guangzhou)(系统枢纽智能交通方向,香港科技大学(广州));Multimodal Experiences Research Lab, Dolby Laboratories(多模态体验研究实验室,Dolby实验室)

Rui Ding, Zhaonian Kuang, Yuzhe Ji, Meng Yang, Xinhu Zheng, Gang Hua

AI总结:

本文提出多模态解耦与耦合网络,通过分离和重新耦合不同模态特征以提高在数据损坏下的3D目标检测鲁棒性。

摘要:

多模态3D目标检测使用鸟瞰图(BEV)在基准测试中取得了预期的进步。然而,在现实世界中,由于传感器配置的LiDAR和场景条件的相机数据损坏,准确性可能会显著下降。先前模型的一个设计瓶颈在于在融合过程中多模态BEV特征的紧密耦合,如果一种或两种模态被损坏,这可能会降低整体系统性能。为缓解这一问题,我们提出了一种多模态解耦与耦合网络,用于在数据损坏情况下实现稳健的3D目标检测。不同模态通常共享一些高层不变特征。我们观察到,这些跨模态的不变特征并不总是同时失效,因为不同类型的数据损坏会影响每个模态的方式不同。这些不变特征可以在不同模态之间恢复,以在数据损坏情况下实现稳健的融合。为此,我们将相机/LiDAR BEV特征显式解耦为模态不变和模态特定的部分。这使得不变特征可以相互补偿,同时减轻一个损坏模态对另一个的负面影响。然后,我们将这些特征重新耦合为三个专家,分别处理不同类型的数据损坏,即LiDAR、相机和两者。对于每个专家,我们使用模态不变特征作为稳健信息,而模态特定特征则作为补充。最后,我们适应性地融合这三个专家以获得精确的稳健特征用于3D目标检测。为了验证,我们收集了一个基准测试,基于nuScenes收集了大量数据损坏(LiDAR、相机和两者)的数据。我们的模型在干净的nuScenes上训练,并在所有类型的数据损坏上进行测试。与最近的模型相比,我们的模型在损坏和干净数据上都保持最佳的准确性。

英文摘要:

Multi-modal 3D object detection with bird's eye view (BEV) has achieved desired advances on benchmarks. Nonetheless, the accuracy may drop significantly in the real world due to data corruption such as sensor configurations for LiDAR and scene conditions for camera. One design bottleneck of previous models resides in the tightly coupling of multi-modal BEV features during fusion, which may degrade the overall system performance if one modality or both is corrupted. To mitigate, we propose a Multi-Modal Decouple and Recouple Network for robust 3D object detection under data corruption. Different modalities commonly share some high-level invariant features. We observe that these invariant features across modalities do not always fail simultaneously, because different types of data corruption affect each modality in distinct ways.These invariant features can be recovered across modalities for robust fusion under data corruption.To this end, we explicitly decouple Camera/LiDAR BEV features into modality-invariant and modality-specific parts. It allows invariant features to compensate each other while mitigates the negative impact of a corrupted modality on the other.We then recouple these features into three experts to handle different types of data corruption, respectively, i.e., LiDAR, camera, and both.For each expert, we use modality-invariant features as robust information, while modality-specific features serve as a complement.Finally, we adaptively fuse the three experts to exact robust features for 3D object detection. For validation, we collect a benchmark with a large quantity of data corruption for LiDAR, camera, and both based on nuScenes. Our model is trained on clean nuScenes and tested on all types of data corruption. Our model consistently achieves the best accuracy on both corrupted and clean data compared to recent models.

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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