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arXiv · 2005.09927

Range Conditioned Dilated Convolutions for Scale Invariant 3D Object Detection

Alex Bewley·Pei Sun·Thomas Mensink·Dragomir Anguelov·Cristian Sminchisescu
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Abstract

This paper presents a novel 3D object detection framework that processes LiDAR data directly on its native representation: range images. Benefiting from the compactness of range images, 2D convolutions can efficiently process dense LiDAR data of a scene. To overcome scale sensitivity in this perspective view, a novel range-conditioned dilation (RCD) layer is proposed to dynamically adjust a continuous dilation rate as a function of the measured range. Furthermore, localized soft range gating combined with a 3D box-refinement stage improves robustness in occluded areas, and produces overall more accurate bounding box predictions. On the public large-scale Waymo Open Dataset, our method sets a new baseline for range-based 3D detection, outperforming multiview and voxel-based methods over all ranges with unparalleled performance at long range detection.

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Alex Bewley, Pei Sun, Thomas Mensink, Dragomir Anguelov, Cristian Sminchisescu. 2020-05-20. Range Conditioned Dilated Convolutions for Scale Invariant 3D Object Detection. https://arxiv.org/abs/2005.09927

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