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CoBEVT: Cooperative Bird's Eye View Semantic Segmentation with Sparse Transformers

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arxiv 2207.02202 v2 pith:DFZN7UWA submitted 2022-07-05 cs.CV

Runsheng Xu , Zhengzhong Tu , Hao Xiang , Wei Shao , Bolei Zhou , Jiaqi Ma This is my paper
classification cs.CV
keywords cobevtsegmentationmulti-agentperceptionperformancesemanticsingle-agentsystems
verification ladder T0 review T1 audit T2 compute T3 formal
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Bird's eye view (BEV) semantic segmentation plays a crucial role in spatial sensing for autonomous driving. Although recent literature has made significant progress on BEV map understanding, they are all based on single-agent camera-based systems. These solutions sometimes have difficulty handling occlusions or detecting distant objects in complex traffic scenes. Vehicle-to-Vehicle (V2V) communication technologies have enabled autonomous vehicles to share sensing information, dramatically improving the perception performance and range compared to single-agent systems. In this paper, we propose CoBEVT, the first generic multi-agent multi-camera perception framework that can cooperatively generate BEV map predictions. To efficiently fuse camera features from multi-view and multi-agent data in an underlying Transformer architecture, we design a fused axial attention module (FAX), which captures sparsely local and global spatial interactions across views and agents. The extensive experiments on the V2V perception dataset, OPV2V, demonstrate that CoBEVT achieves state-of-the-art performance for cooperative BEV semantic segmentation. Moreover, CoBEVT is shown to be generalizable to other tasks, including 1) BEV segmentation with single-agent multi-camera and 2) 3D object detection with multi-agent LiDAR systems, achieving state-of-the-art performance with real-time inference speed. The code is available at https://github.com/DerrickXuNu/CoBEVT.

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Cited by 12 Pith papers

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