In this paper, we present LaserNet, a computationally efficient method for 3D object detection from LiDAR data for autonomous driving. The efficiency results from processing LiDAR data in the native range view of the sensor, where the input data is naturally compact. Operating in the range view involves well known challenges for learning, including occlusion and scale variation, but it also provides contextual information based on how the sensor data was captured. Our approach uses a fully convolutional network to predict a multimodal distribution over 3D boxes for each point and then it efficiently fuses these distributions to generate a prediction for each object. Experiments show that modeling each detection as a distribution rather than a single deterministic box leads to better overall detection performance. Benchmark results show that this approach has significantly lower runtime than other recent detectors and that it achieves state-of-the-art performance when compared on a large dataset that has enough data to overcome the challenges of training on the range view.

本文提出了LaserNet，一种3D物体检测的计算有效方法，它通过在传感器的本地范围视图中处理LiDAR数据来提高效率，并使用全卷积网络来预测每个点的3D框的多模式分布，然后高效地融合这些分布以生成每个对象的预测，实验证明这种方法比其他方法具有显著更低的运行时间，并且在大型数据集上具有比其他检测器更好的性能。

LaserNet: 高效的概率三维物体检测器，用于自动驾驶