Deep learning

Aerospace engineering

Pattern recognition (psychology)

Mathematics

Bounding overwatch

Radar imaging

Image (mathematics)

Minimum bounding box

Engineering

Artificial intelligence

Azimuth

Range (aeronautics)

Geometry

Object detection

Doppler radar

Computer science

Computer vision

Radar

Telecommunications

Object detection using automotive radars has not been explored with deep learning models in comparison to the camera based approaches. This can be attributed to the lack of public radar datasets. In this paper, we collect a novel radar dataset that contains radar data in the form of Range-AzimuthDoppler tensors along with the bounding boxes on the tensor for dynamic road users, category labels, and 2D bounding boxes on the Cartesian Bird-Eye-View range map. To build the dataset, we propose an instance-wise auto-annotation method. Furthermore, a novel Range-Azimuth-Doppler based multiclass object detection deep learning model is proposed. The algorithm is a one-stage anchor-based detector that generates both 3D bounding boxes and 2D bounding boxes on RangeAzimuth-Doppler and Cartesian domains, respectively. Our proposed algorithm achieves 56.3% AP with IOU of 0.3 on 3D bounding box predictions, and 51.6% with IOU of 0.5 on 2D bounding box prediction. Our dataset and the code can be found at https://github.com/ZhangAoCanada/RADDet.git.

RADDet: Range-Azimuth-Doppler based Radar Object Detection for Dynamic Road Users