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arXiv 2403.16635cs.CV
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V2X-PC:基于点簇的车联网协同感知

V2X-PC: Vehicle-to-everything Collaborative Perception via Point Cluster

Institute of Artificial Intelligence, Beihang University(北京航空航天大学人工智能研究院);Hangzhou Innovation Institute, Beihang University(北京航空航天大学杭州创新研究院);Cooperative Medianet Innovation Center (CMIC), Shanghai Jiao Tong University(上海交通大学合作 medianet 创新中心);Shanghai AI Laboratory(上海人工智能实验室);Sangfor Technologies Inc.(深信服科技股份有限公司)

Si Liu, Zihan Ding, Jiahui Fu, Hongyu Li, Siheng Chen, Shifeng Zhang, Xu Zhou

AI总结:

针对BEV地图协同感知存在的特征破坏与聚合低效等问题,提出基于点簇的V2X-PC框架,结合打包与聚合模块并引入免参数延迟位姿解决方案,在两大基准上性能优于现有SOTA。

摘要:

协同车联网感知任务的目标是通过相邻交通智能体之间的消息通信来增强单车自身的感知能力。先前的方法主要关注在带宽限制内实现最佳性能,通常采用BEV地图作为基本的协同消息单元。然而,我们证明了使用密集表示进行协同会受到以下问题的困扰:消息打包过程中的目标特征破坏、长距离协同中低效的消息聚合,以及隐式结构表示通信。为了解决这些问题,我们引入了一种全新的消息单元,即点簇,旨在通过结合低级结构信息与高级语义信息来稀疏地表示场景。点簇在打包消息时能够固有地保留目标信息,与协同范围的相关性较弱,并支持显式结构建模。基于这种表示,我们提出了一种用于协同感知的新颖框架V2X-PC。该框架包含一个点簇打包模块,通过调整簇内点数来保留目标特征并管理带宽。为了实现有效的消息聚合,我们提出了点簇聚合模块,用于匹配并合并与同一目标关联的点簇。为了进一步处理现实场景中遇到的时间延迟和位姿误差,我们提出了免参数解决方案,能够适应不同的噪声水平而无需微调。在两个广泛认可的协同感知基准上的实验表明,与以往依赖BEV地图的最先进方法相比,我们的方法展现出了优越的性能。

英文摘要:

The objective of the collaborative vehicle-to-everything perception task is to enhance the individual vehicle's perception capability through message communication among neighboring traffic agents. Previous methods focus on achieving optimal performance within bandwidth limitations and typically adopt BEV maps as the basic collaborative message units. However, we demonstrate that collaboration with dense representations is plagued by object feature destruction during message packing, inefficient message aggregation for long-range collaboration, and implicit structure representation communication. To tackle these issues, we introduce a brand new message unit, namely point cluster, designed to represent the scene sparsely with a combination of low-level structure information and high-level semantic information. The point cluster inherently preserves object information while packing messages, with weak relevance to the collaboration range, and supports explicit structure modeling. Building upon this representation, we propose a novel framework V2X-PC for collaborative perception. This framework includes a Point Cluster Packing (PCP) module to keep object feature and manage bandwidth through the manipulation of cluster point numbers. As for effective message aggregation, we propose a Point Cluster Aggregation (PCA) module to match and merge point clusters associated with the same object. To further handle time latency and pose errors encountered in real-world scenarios, we propose parameter-free solutions that can adapt to different noisy levels without finetuning. Experiments on two widely recognized collaborative perception benchmarks showcase the superior performance of our method compared to the previous state-of-the-art approaches relying on BEV maps.

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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