基于毫米波雷达和相机鸟瞰图融合的三维感知方法

By using a feature fusion method based on millimeter-wave radar and camera bird's-eye view, the problems of low coding efficiency and non-alignment are solved, achieving high-precision and robust 3D perception for autonomous driving, improving detection and segmentation accuracy, and making it suitable for a variety of computer vision tasks.

CN118038396BActive Publication Date: 2026-07-17PEKING UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PEKING UNIV
Filing Date
2024-03-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing multimodal perception methods using millimeter-wave radar and cameras suffer from low coding efficiency, unstable fusion, and an inability to effectively address the misalignment between millimeter-wave radar data and images, thus limiting the perception performance of autonomous driving systems.

Method used

Employing an efficient millimeter-wave radar backbone network and a deformable cross-attention multimodal fusion method, feature alignment and fusion of millimeter-wave radar and camera bird's-eye view images are achieved through radar cross-section discretization and cross-view feature projection. This is then combined with convolutional neural networks for 3D perception tasks.

Benefits of technology

It improves the 3D perception accuracy and robustness of autonomous driving systems, is applicable to a variety of computer vision tasks, enhances detection and segmentation accuracy, and maintains the real-time inference speed of the model.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开一种基于毫米波雷达和相机鸟瞰图融合的三维感知方法,属于计算机视觉技术领域。本发明针对毫米波雷达的特性,利用毫米波雷达主干网络,进行点云鸟瞰图特征提取,使用两种特征表征方式对毫米波雷达点云进行特征表示,并使用基于雷达反射截面(RCS)的离散方法得到鸟瞰图特征,基于可形变的跨注意力机制对毫米波雷达特征和相机鸟瞰图特征进行鲁棒和高效的融合,从而提高自动驾驶的感知任务的性能和多模态鲁棒性。采用本发明能够提高自动驾驶的三维感知(如三维目标检测、语义分割等)性能,可广泛应用于自动驾驶中实际应用的计算机视觉任务(如三维物体检测、语义分割等)。
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